|
Global Change and Subsistence Rangelands in Southern Africa: Resource Variability, Access and Use in Relation to Rural Livelihoods and Welfare
Task 0 Project Document
Rangeland and Livelihood Dynamics
in the Matsheng Area, Botswana
A Preliminary Report and Literature Review
Compiled by
Jaap Arntzen (ed.)
Raban Chanda
Happy Fidzani
Lapologang Magole
Moffat Setshogo
Christina Skarpe
Gubungano Tacheba
Otlogetswe Totolo
University of Botswana
Private Bag 0022
Gaborone, Botswana
1998
CONTENTS
1.1 The Kgalagadi District
1.2 Kgalagadi North and the Study Area
1.3 Data Sources
1.4 Working Definitions
1.5 Structure of the Report
2.1 Rainfall and Temperature
2.2 Water Resources
2.3 Geology and Geomorphology
2.4 Soil Resources
2.5 Conclusion
2.6 Topics of interest for further research which arise from the
literature review
3. Population Trends and Features
3.1 Settlement History
3.2 Population and Settlements
3.3 Gender and Age
3.4 Migration
3.5 Socio-economic Characteristics of the Population (Kgalagadi North)
3.6 Population Projections
3.7 Conclusion
3.8 Topics of interest for further research which arise from the
literature review
4.1 Resource Trends
4.2 Current Ecological State of Rangelands
4.3 Stocking Rates
4.4 Conclusion
4.5 Topics of interest for further research which arise from the
literature review
5.1 Physical Resource Availability
5.2 Regulations and Policies
5.3 Socio-economic Means
5.4 Conclusion
5.5 Topics of interest for further research which arise from the
literature review
6. Livelihoods and Activity Patterns
6.1 Livestock Production
6.2 Wildlife and Veld Products
6.3 Arable Agriculture
6.4 Non-agricultural Income-generating Activities
6.5 Conclusion
6.6 Topics of interest for further research which arise from the
literature review
7. Activity Patterns and Rangeland Products
7.1 Wildlife
7.2 Veld Products
7.3 Livestock and Grazing
7.4 Conclusion
7.5 Topics of interest for further research which arise from the
literature review
8. Resource Utilisation, Practices and Constraints
8.1 The Livestock Sector
8.2 Wildlife Utilisation
8.3 Veld Products
8.4 Arable Agriculture
8.5 Conclusion
8.6 Topics of interest for further research which arise from the
literature review
9. Macro-economic Conditions influencing Livelihoods and Rangeland Use
10. Policies influencing Resource Access and Livelihoods
10.1 Resource Policies
10.2 Development and Livelihood Support Policies
10.3 Settlement and Public Services Policies
10.4 District Plans
10.5 Conclusion
11. Integration and Conclusions
11.1 Rangeland Changes and Changes in Products
11.2 Causes of Change
11.3 Livelihood Sources and the Impacts of Rangeland Changes
11.4 Livelihood Dynamics
11.5 Compatibilities and Incompatibilities between Rangeland Uses
11.6 Signs and Impacts of Global Change
11.7 Role of External Factors
1. INTRODUCTION
This report contains the results of a review of existing literature on rangeland and livelihood dynamics in a part of south western Botswana. The purpose of the literature review is threefold:
1. to analyse existing information
2. to identify data gaps and priorities for data collection
3. to enable the available data to be collated in a systematic framework, which will ultimately lead to the development of a model of rangeland and livelihood dynamics.
The study focuses on the Matsheng area. This area lies in the northern Kgalagadi sub-district (44,000 km2) which constitutes, together with Kgalagadi South, the Kgalagadi District. Tsabong is the district capital. The location and the main features of the study area are shown in Map 1.
1.1 The Kgalagadi District
Archaeological and anthropological research has shown that south western Botswana - often called a desert - has been inhabited by the ‘Bushmen’ at least as far back as 200 AD. However, the increased resource pressure currently on the area has mainly been a consequence of the expansion of the livestock experiment in the sector (Cooke, 1985). Prior to livestock invasion, the occupation rate of the area was low due to the non-availability of water ("the old age protection of the Kalahari"; Cooke, 1985). The Kalahari's economic importance dates back to the nineteenth century, when it started to be exploited on commercial basis for trade in skins, feathers and ivory. The second stage in the invasion of the Kalahari arose from the mounting pressure on rangeland resources in the hard veld of eastern Botswana. As Cooke (1985) puts it "in search for solutions or palliates all eyes turned toward the Kalahari sand veld". This invasion, that occurred mainly after independence, resulted in the establishment of permanent cattle posts, a process that was facilitated by borehole technology.
1.2 Kgalagadi North and the Study Area
The Matsheng villages are located approximately 24°S and 22°E. Land in the area is generally used for grazing, crop production, residential, other non-agricultural activities, and collection of veld products including wood resources. The area is among the driest in the country. While rangelands are widespread in Botswana, the arid nature of the Kgalagadi District has made it more sensitive and vulnerable to increased grazing pressure.
It is a relatively poor area, as are most other remote areas in the country. The latest poverty study (BIDPA, 1997) found that northern Kgalagadi has the highest "destitute" incidence in the country after Ghanzi district: 3.5 times that of the country's average. Living conditions are comparable to Gambia while the capital, Gaborone, enjoys South Korean living standards. Causes of low living standards include: limited arable potential, remoteness and distance to the markets, low population density, poor quality of government services and remote area dwellers (RADs) living in marginal settlements. The Matsheng villages are probably slightly better off than the sub-district average because of the facilities available and government support. The area has recently been linked to the tarred network in southern Africa, which will make it less isolated. A 100 km tarred road connects the villages to the Trans-kalahari highway at Kang.
1.3 Data Sources
There is a dearth of specific, up-to-date data on the economic activities of the Matsheng villages. Much of the following account of these activities is therefore based on dated sources, some of which address the Kalahari as an ecological region or generalise about the Kgalagadi and the western sub-regions. It is expected that, when more data become available on the villages (e.g., from this study), general impressions presented here are likely to be modified. For the more area-specific data, the report relies heavily on a baseline study of the Matsheng villages (van der Maas et al., 1994). In addition, regular statistics such as Population Census and Agricultural Statistics have been used.
Reviewing literature as and when it is published is an integral part of the project, and it is expected that many other studies will contribute to the modification of our preliminary conclusions. For example, data on groundwater quality are expected in the near future. New Agricultural Statistics may throw new insights on the region. A more thorough analysis of Population Census data is planned at a later stage.
1.4 Working Definitions
The following working definitions are being used in the study:
Stocking rate is the number of animals, domesticated and/or wild, per unit of rangeland.
Rangelands are land resources mostly used for extensive forms of land use, primarily livestock production, wildlife utilisation, wood and plants gathering as the areas are too dry or infertile for more intensive forms of land use.
Rangeland degradation is associated with changes in vegetation and soils leading to a decline in the total land productivity. It includes both reversible and irreversible changes. Obviously, the irreversible changes are a greater cause of concern.
Total land productivity is the summation of livestock, wildlife and veld-products production per unit of rangeland.
1.5 Structure of the Report
The report is structured as follows. Each subsequent section discusses a cluster of the mechanistic model developed at the Gaborone workshop (Odada et al., 1996). In the concluding section, this model is revisited (Figure 7, p. 49), and a synthesis of the preliminary conclusions derived from the literature review is given (section 11).
Month
P mean(mm)
P max (mm)
Pd max (mm)
PET (mm)
Eo (mm)
July
1.0
24.8
-
86
100
August
1.1
16.4
-
116
134
September
3.2
20.8
-
154
175
October
18.3
67.1
37.5
191
235
November
34.3
137.8
42.8
203
235
December
34.9
93.4
37.9
216
251
January
83.3
242.4
110.0
207
241
February
65.8
221.2
149.6
168
196
March
63.8
207.1
105.0
167
196
April
33.4
98.7
54.7
121
142
May
7.9
31.2
-
100
117
June
2.9
25.4
-
77
90
Year
347.5
756.7
149.6
1806
2095
P Mean: Mean amount of precipitation (1958-85) (mm)
P Max: Maximum amount of precipitation (1958-85) (mm)
Pd Max: Daily maximum amount of precipitation (mm)
PET: Mean potential evapotranspiration (mm)
Eo: Mean free water surface evaporation (mm)Source: Bhalotra, 1987
Table 1 shows seasonal rainfall distribution and evaporation figures. Because of the relatively high temperatures, evapotranspiration is very high, far exceeding the amount of precipitation. This implies that there is virtually no moisture retained within the soil profile. As a result, vegetation is always under acute moisture stress in an environment that is not very conducive for the growth of vegetation. Only xerophytic plants can thrive under such extreme moisture deficiency.
Temperature is relatively high with a minimum average day temperature of 12oC and a maximum temperature of about 41oC, severely restricting plant growth in summer. During the winter (May-July), there are some incidents of ground as well as air frost. Frost conditions are very inhibitive to growth of vegetation. Generally, the growing period is very short, and production, especially of arable crops, is restricted.
Interannual temperature variation is very limited (Figure 2). Interestingly, no direct relationship appears to exist between average rainfall and temperatures. In 1987, high maximum and minimum temperatures were recorded with a relatively high amount of rainfall (Figure 1). On the other hand, 1984/85 was a drought period but the temperature did not fluctuate from the mean for the area. During another low rainfall year (1994/95), however, relatively high temperatures were recorded.
Figure 2: Average day temperatures in Tshane
![]()
Source: Central Statistics Office, 1997
Table 2 shows the diurnal and seasonal temperature fluctuations for the area.
Table 2: Mean monthly and annual temperature data for Tshane
Month
Tmax (oC)
Tmin (oC)
TEMax (oC)
TEmin (oC)
F-ground (days)
F-air (days)
July
22.2
3.4
31.9
-5.0
14.9
3.9
August
25.1
6.0
32.6
-8.0
6.6
1.4
September
29.3
10.6
37.8
-3.9
1.5
0
October
31.7
14.5
39.9
4.9
0
0
November
33.0
17.0
40.6
7.0
0
0
December
34.1
18.0
40.8
6.0
0
0
January
34.1
19.5
41.0
10.5
0
0
February
32.6
18.7
41.0
11.0
0
0
March
31.4
16.9
39.0
5.7
0
0
April
28.0
12.7
35.2
3.6
0
0
May
24.7
7.4
34.5
-1.6
2.6
0.1
June
21.8
3.9
29.5
-6.6
14.9
4.0
Year
29.0
12.4
41.0
-8.0
40.5
9.4
TEmax: Extreme maximum temperature (1959-86) (oC)
TEmin: Extreme minimum temperature (1959-86) (oC)
F-ground: Mean number of days with ground frost (1976-85)
F-air: Mean number of days with air frost (1976-85)Source: Bhalotra, 1987 and Sims, 1981.
2.2 Water Resources
Surface water resources are very scarce and are only found in pans during the rainy season. Most villages are therefore found on the edge of pans because of the better access to water. through the pans and wells. Nowadays, settlements are mostly supplied by underground water resources from boreholes. This may be tricky in the long run as the Lower Karoo which constitutes the Kgalagadi desert is characterised by poor groundwater development prospects, with mainly saline water (van der Maas, 1994). It forms a composite aquifer with thin sandstone layers interbedded with less permeable shales and mudstone, only occasionally forming aquifers that yield a fair amount of water.
The groundwater is recharged by a highly variable rainfall. Abstraction may therefore exceed the recharge rate. This constraint implies that the potential for large-scale development projects is restricted. Water salinity is also a problem.
Most villagers rely on wells to water their livestock. Wells are mostly located close to the pans because that is where water is relatively close to the surface. Villages are located close to these pans in order to tap water from sip wells (Figure 3). Boreholes are mostly used by big livestock farmers and by the government to supply settlements with water for domestic use. It is important to note that, in general, water sources close to the pans have lower total dissolved solutes (TDS) and as a result most settlements and cattle-posts are located adjacent to these.
Figure 3: Distribution of sip-wells in northern Kgalagadi District
![]()
pans. However, pollution of these underground water resources is evident as characterised by relatively high nitrate and phosphorus levels in the water supply of those settlements close to the boreholes and hand-dug wells.
Although borehole technology makes it possible to reach water at great depth, in Kgalagadi, especially Matsheng villages, this is constrained by the high marginal costs of groundwater (Adams et al., 1990). Moreover, borehole drilling may be very deep and unsuccessful or the water quality may be poor and unusable. For example, APRU failed to strike water for two grazing cells which were proposed in the Matsheng area (Sweet, 1986).
The literature suggests that the pans are drier than in the past (although the exact reference point is not specified). Van der Maas et al (1994) also reports that villagers claim that the water level has gradually been falling. It further states that information about underground water is lacking. Obviously, further research is needed into possible changes with respect to pans and groundwater.
2.3 Geology and Geomorphology
The study area is part of the Kgalagadi basin. The sub-soil consists of a layer of Kgalagadi sands, which varies in thickness from a few metres to more than two hundred metres (Geological Survey Department, 1984)*.
The landscape is flat to undulating with major calcrete rimmed pans that contain salty water after heavy rains. Most of them have a lunette dune on their south-west side (this indicates an older origin when winds were predominantly from the north-east). The height of the area varies from 1020 to 1126 metres above mean sea level (Bogman and Lammers, 1995).
2.4 Soil Resources
The study area is mostly characterised by deep sandy soils classified as Arenosols according to the FAO soil classification system. These soils have very high infiltration rates as well as hydraulic conductivity. Once moisture enters these soils, they will be conducted to the deeper parts of the profile. Moisture conducted by Arenosols mostly recharges the groundwater table.
According to Van der Maas (1994), some other soil types, viz, Solonchak, Solonetz and Regosol, are found in the area especially associated with lacustrine deposits and unconsolidated material. Solonchak soils are characterised by salt accumulation on the surface while Solonetz have an accumulation of the salts on the subsurface. Solonchak and Solonetz have developed on clays and therefore have poor drainage, which explains why water accumulates on the surface after the rains, because it cannot percolate through the clayey profile. Van der Maas (1994) observes that Solonchak and Solonetz soils contain a lot of free carbonates, exchangeable sodium and salts. They are thus too toxic to support the growth of any vegetation. Regosol are shallow soils developed on unconsolidated gravely material and, in the case of the Kgalagadi environment, they are mainly on calcrete.
Due to sandy properties and poor aggregation, most of the soils of Matsheng villages are highly susceptible to soil erosion. To what extent erosion, especially caused by wind, actually occurs is determined by human factors. Sparse vegetation cover makes the area vulnerable to wind erosion. Land clearing for cultivation is another major cause of the increase of barren soil in the area (Ringrose et al., 1997*). Erosion seems to occur mostly around settlements, boreholes and cattle-posts. The extent of the problem in this fragile Kgalagadi environment needs further investigation.
2.5 Conclusion
The Kgalagadi environment is very dry and is characterised by great variation in both temperature and rainfall. As a result of the high rainfall variability, rangelands can be expected to be in a constant state of disequilibrium and the concept of an average stock-carrying capacity has little meaning in the area. Soils of the study area are mostly sandy and have a low water- holding capacity accompanied by low nutritional status. Surface water is very scarce; ground water exploitation has opened up new opportunities but the potential for extracting ground water is limited, and the water tends to be saline. These climatic and hydrological conditions severely restrict development opportunities. In general, the area is unsuitable for arable agricultural production. It is also difficult to envisage large-scale development projects in the area.
2.6 Topics of interest for further research which arise from the literature review
a. What other important soil types are found other than Arenosols (including chemical, mineral and physical properties of the dominant soils). Where are these soils and what are their uses?
b. What is the relationship between rangeland productivity and soil types? What is the relationship between vegetation patterns and soil types? Are soil variations used as indicators of land and water suitability for various farming functions?
c. What is the long-term trend in rainfall amount and variability? What is the relationship between rangeland productivity and rainfall? What is the long-term trend in average temperatures?
d. What is the potential for groundwater extraction? Is there any relationship between population centres and water quality?
e. What has happened to water availability in the pans? What are the possible causes of changes and what mitigation measures can be taken?
f. What is the extent of soil erosion in the study area? What are the causes and effects?
1971
1981
1991
1. Hukuntsi
2. Kang
3. Lehututu
4. Lokgwabe
5. Tshane
6. Hunhukwa
7. Phuduhudu
8. Ukwi
9. Lokgware
10. Monong
11. Zutswa
12. Make
13. Caa C P
14. Ngwatle
15. Ohe
1,160
1,110
448
300
604
n.a
n.a
31
n.a
4
n.a
n.a
n.a
n.a
42
2,009
1,684
713
866
637
n.a
278
274
n.a
100
n.a
n.a
29
n.a
42
2,562
2,265
1,304
1,037
706
356
322
313
307
232
203
182
100
92
43
n.a = not available
Source: CSO, 1993.
3.3 Gender and Age
In most villages, men are outnumbered by women (Table 4). This is also the case at the national level. A likely contributing factor in the study area is that men have left their villages in search for cash-earning employment.
Table 4: Population distribution by sex (%; 1991)
Villages
Percentage of males
Percentage of females
Hukuntsi
Kang
Lehututu
Lokgwabe
Tshane
Hunhukwa
Phuduhudu
Ukwi
Lokgware
Monong
Zutswa
Make
Caa Cattlepost
Ngwatle
Ohe
Kgalagadi
Botswana
45.5
45.6
44.8
44.3
46
53.1
46
54
47.6
47
42.4
48.4
43
45.7
46.5
48.4
47.8
54.5
54.4
55.2
55.7
54
46.9
54
46
52.4
53
57.6
51.6
57
54.3
53.5
51.6
52.2
Source: CSO, 1993
In terms of age, the youth (up to 14 years) account for 43.2% of the population. This is almost the same proportion with the active population (15-64) which comprises 43.1%. Senior citizen (65+) account for 8.9% of the population. For the remaining 5.7% of the population the age is unknown. Corresponding national figures are 43.6%, 51.5% and 4.9%. The lower percentage of economically-active population indicates out-migration.
3.4 Migration
Out-migration has a considerable impact on the population composition. Most migrants are men, hence the larger number of women in most of the villages. Further education and employment are the two main reasons for migration. Females tend to dominate migration for further education while males form the majority of those who go in search of employment (GoB, 1994). Gaborone is the most popular destination, followed by Lobatse and Southern district; only 3% were said to be working in South Africa (van der Maas, 1994). The same baseline study found that three-quarters of the households in the Matsheng villages have an absentee member who has not gone to study. A total of 2,032 people were recorded to be absent from the Matsheng area, mostly falling in the 20-64 age category (Van der Maas et al., 1994).
3.5 Socio-economic Characteristics of the Population (Kgalagadi North)
Education
Out of a total population of 9,794 of persons 5 years and older in 1991, 6,141 had attended school. A large proportion of these 2,733 (44.5%) had only attended lower primary (standard 1-4). Of these 463 never finished standard 1 (see Table 5 below). There are slightly more (243 compared to 220 out of 463) male pupils who failed to finish standard 1 than there are females. This is not consistent with national figures where fewer (26,770) males never finished standard 1 as compared to 28,677 females. Only 14.9% (913) of those who ever attended school went as far as upper primary (standard 5-7); the corresponding national figure is 33% of the total population. 8.2% had attempted junior secondary education (form 1-3), while only 1.2% had gone for higher secondary (4-5). An even lower proportion (.8%) had attempted higher education, which is lower than the national figure of 2.8%.
The 1991 population census report does not indicate how many of the people of Northern Kgalagadi attended non-formal education. However given that 62.7% of persons 5 years and older have attended school up to different levels, it is safe to say that the general improvement in literacy since independence in 1966 has reached Northern Kgalagadi. However the national figure is higher; about 70% of the national population has attended school to one level or another. Again these figures do not include those who have undergone informal education.
Table 5: Population of 5 years and older, that ever attended school, by sex and educational level attained (Kgalagadi North)
Source: Central Statistics Office, 1994
Educational level
Male
Female
Total
Standard 1 (not completed)
243
220
463
Standard 1 to 4
1 122
1 148
2 270
Standard 5 to 7
913
1 137
2 050
Form 1 to 3
502
584
1 086
Form 4 to 6
115
73
188
Higher
50
26
76
Not stated
5
3
8
Compared to the national levels, educational levels in North Kgalagadi Sub-district are lower; for example, 25.6% of the country's population had attained secondary or higher educational levels in 1991. The corresponding figure for Northern Kgalagadi is 10.2%. This will definitely have implications on livelihood and poverty levels. As is the case with national figures, there are more females at the lower levels of education, a situation which changes notably at the upper secondary level. This means that females will be less qualified for cash-earning employment. This is reflected in the much higher number of males employed (1,092) compared to females (543). National figures are similar: 175,734 males employed compared to 100,194 females.
Health
In 1993 Kgalagadi North recorded the highest incidence of moderately malnourished children in the country. The sub-district has a an average life expectancy of 54.8 years, which is much lower than the national average of 65.2 years. Furthermore the district suffered high infant mortality, recording a rather high mortality rate of 94/1,000 as compared to the national rate of 48/1,000. Relating to household hygiene it needs to be noted that according to the 1991 population census most of the households (1,771 out of 2,402 households, around 75%) did not have a toilet facility.
The statistics indicate low health levels for the sub-district, most likely due to poverty levels, as well as provision and standard of health facilities. The provision of facilities has since improved; for example, a primary hospital has been provided in Hukuntsi. The impact of these remain to be revealed.
3.6 Population Projections
Currently the North Kgalagadi Sub-district population growth rate has slowed down to around 1.5% per annum. This is well below the national average of over 3%. This relatively low growth rate is expected to be stable until about 2011, when it will start to decline to 1.4% in 2016. The rate is expected to decline to 1.2% by the year 2021. Population forecasts for the sub-district are 13,239 in 2001, 15,407 in 2011 and 17,516 in 2021. Although detailed projections for the Matsheng area are not available, population growth is likely to remain low.
3.7 Conclusion
The Northern Kgalagadi Sub-district is the least populated in the country. It has a relatively low growth rate due to out-migration, and its development potential is limited by the harsh climate and poor infrastructure. It therefore seems that population growth is not the primary cause of changes in rangeland conditions. Sedentarisation, settlements patterns and changes in ethnic composition (e.g. more groups dependent on livestock) have probably been more instrumental in rangeland and livelihood dynamics.
3.8 Topics of interest for further research which arise from the literature review
a. extent of sedentarisation and concentration of populations in the settlements
b. role of ethnic origins and migration in rangeland uses.
Source: White, 1993
Date
Livestock population
Grazed area
Grazing area km2/beast
Number
Expansion rate/yr
Area km2
Expansion rate/yr
1950
1960
1970
1980
1990
27700
36500
44400
84800
62400
4.1%
2.8%
2.0%
6.7%
-3.1%
12950
14550
20700
23950
31900
<1.0%
1.2%
3.6%
1.5%
2.9%
0.47
0.40
0.47
0.28
0.51
Table 7: Standing crop (g/m2) of herbaceous plants in Tshane communal exclosures (excluding browse)
Extracted from APRU 1987-1994
Distance from water source
Year
4
8
13
15
18
23
1987
n/a
221
310
877
335
961
1988
52
98
64
248
130
130
1989
76
133
158
257
130
164
1990
46
156
64
82
45
42
1991
34
75
86
206
71
111
1992
12
77
68
78
43
112
1993
8
15
19
9
7
21
1994
60
70
94
107
124
82
Mean
36
106
108
233
111
203
Acacia mellifera is the most problematic woody species. It has shallow spreading roots and competes with grass for water and nutrients. This phenomenon does not, however, fit the model by Walter as quoted by Walker et al. (1982) which indicate that grasses are more efficient in extracting water from the upper soil layer but below the grass root zone the woody plants have nearly exclusive use of whatever water gets through. Density of A. mellifera is high around the pans and along the rivers in Kgalagadi. In a cattle-grazing trial, Skarpe (1990) pointed out that density and biomass of A. mellifera increased in relation to increase in stocking rate, and Grewia flava, a browsing species, increased to a lesser extent. Herbaceous plants increased with decreased stocking rate (Skarpe, 1986). The study was conducted in Northern Kalahari Tree and Bush Savanna vegetation. An analysis of APRU 1989 to 1994 statistics show that total biomass of herbaceous plants in Masiatilodi ranch in an Arid Sweet Savanna tend to increase with decreased stocking rate and stocking rate decreases with distance from water source (see Table 7). Good grass species increase with decreased stocking rate and poor grasses and forbs decrease with stocking rate or maintain the same level. Intermediate grasses tend to increase up to 8 ha/LSU and then decrease. Stocking rate of 2 ha/LSU was difficult to maintain; and in years of low rainfall 4, 6 and 8 ha/LSU were also affected.
Ringrose et al. (1995) noted that bush density was higher around boreholes than around villages, and attributed this to the number of goats and fuelwood/veld product gathering around villages.
4.3 Stocking Rates
Kgalagadi District experiences high livestock stocking rates. Arntzen (1989) showed that stocking rate was 7 ha/LSU in 1980 and 13.5 ha/LSU in 1984, against 21-27 ha/LSU, potential carrying capacity. It should be noted that, given the high rainfall variability, the carrying capacity varies enormously with rainfall pattern. Consequently, a strict comparison of stocking rates with an average carrying capacity has little significance. Rising stocking densities have resulted in rangeland degradation, especially around settlements and water points, reduction in good forage grasses, increase in bare ground, increase in poor forage grasses and increase in woody plants. Data from grazing exclosures on a degradation gradient in Tshane showed that yield of herbaceous plants increased with increased distance from water point (APRU 1994 - Table 7). The area close to water point (4 km) was dominated by forbs and annual, poor grasses and was void of good grasses. However, Perkins and Thomas (1993) pointed out that grazing recovers relatively quickly after disturbances in a Northern Kalahari Tree and Bush Savanna vegetation type.
4.4 Conclusion
The Matsheng area is well vegetated with good stands of trees and some herbaceous cover. Generally, legumes are doing well because of their ability to convert atmospheric nitrogen into nitrogenous compounds. Thus leguminous plants can grow well on relatively poor soils. They provide browse for livestock, particularly goats. Cattle production relies solely on rangeland productivity. Therefore maintenance of land productivity is essential for a viable cattle industry.
Ecological resources have changed during the last decades. Wildlife resources have declined as a result of loss of surface water (for water-dependent species) and increasing competition with livestock for grazing and water resources. In addition, bush encroachment has been observed associated with the growing livestock numbers. There is clear evidence of vegetation changes around water points and settlements. There is no comprehensive insight into the extent of soil erosion nor in the impact of vegetation changes on total land productivity. The occurrence of bush encroachment raises the issue of the importance of browsing for domesticated and wild animals.
4.5 Topics of interest for further research which arise from the literature review
1. The role of browse as an alternative to or supplement for grass. Is there a noticeable shift towards browsers among domesticated and wild animals?
2. Impacts of grazing and stocking rates on the abundance and composition of vegetation. Are there any indicator species of "good" and "poor" range conditions? A transect will be used with decreasing impacts of livestock grazing and increasing importance of wildlife. It may also be useful to compare vegetation surrounding a pan predominantly used by livestock and one by wildlife
3. Measurement of rangeland productivity in relation to rainfall variations (spatially and inter-temporal).
5. NATURAL RESOURCE ACCESS
Access to natural resources is determined by the following factors:
1. Physical resource availability. The more abundant the resources, the better the access (other things being equal)
2. Regulations and policies, both modern and traditional
3. Socio-economic means and status, which determine the "spatial reach" of households as well as their opportunities to access resources through purchases.
5.1 Physical Resource Availability
No resource inventory exists for the sub-district or the study area. The study area has traditionally been well endowed with natural resources such as veld products and wildlife. However natural resources such as wildlife are reported to be depleting rapidly. For example, between 1986 and 1994 a dramatic decline occurred in the number of gemsbok, hartebeest, eland and wildebeest populations (see section 2.6). Because of its scarcity, water plays a key role in human activities in the district. Surface water is very limited, diminishing, seasonal and only able to sustain limited human activities (Section 2.1). Groundwater has eased the water constraint to some extent, but mostly for domestic use and for rich livestock producers, who can afford boreholes.
5.2 Regulations and Policies
Land tenure and land use policies are very important in determining resource access. Policies are discussed in more detail in section 2.9. The entire study area comprises tribal land. The bulk of the land is communal, earmarked for mixed farming within the 20 km radius of the villages and wildlife management areas (WMAs) beyond this artificial boundary. The Department of Wildlife and National Parks (DWNP) has started to allocate hunting quotas for some WMAs. Communities have the option to sub-let these rights or to exploit them themselves. Some livestock ranches are situated to the east of the area. This leaves very little communal land designated primarily for livestock production. This constraint is made more severe because of:
a. access to such areas by neighbouring livestock ranchers (so-called dual grazing rights). Elsewhere in Botswana, commercial ranchers indeed continue to use communal areas (Tsimako, 1992)*.
b. influx of land users from outside following the recent change in the Tribal Land Act allowing Batswana access to land throughout Botswana instead of their district of origin only.
In Kgalagadi District in particular, most Tribal Grazing Land Policy (TGLP) ranches occupy land where local communities have hunted and harvested veld products (Thusano Lefatsheng, 1994). Thus, private ranches improved resource access for the rich livestock owners but reduced access to land, wildlife and veld products for the majority of the population. Although TGLP is silent about the on-farm hunting and gathering rights of the rest of the community, in practice, people are excluded by the mere fencing of the area. The Agricultural Development Policy (ADP) of 1991 opens opportunities for fencing of more rangeland. Discussions on how other people can retain the traditional rights to collect veld products within the fenced-off areas are on-going. These rights are vaguely defined and it is clear that admission of those who wish to collect veld products is subject to the discretion of the land-holder. This thorny issue may soon emerge in the study area as Makopong in the Kgalagadi South Sub-district has been selected as one of the first areas for the implementation of the new fencing scheme.
Informal rules continue to influence resource access. For example, to reduce conflicts and over-utilisation, each settlement appears to have their "own" hunting and gathering areas. Informal rules still play a role throughout Botswana. However, the extent of their application and the degree of influence is known to differ from region to region. It is therefore important for the study to find out which informal resource access rules are still operational and what their impact is.
Access to land for livestock is not meaningful without having access to water. This implies that remote rangelands are not accessible for livestock unless you can draw from borehole water. The poor majority has no alternative but to keep cattle in the vicinity of settlements, frequently, and illegally, using council water for their animals during the dry season.
As individual arable land is effectively given priority over communal livestock and wildlife areas, and population density is low, access to cropland is relatively good. According to the Sub-Land Board, on average 15 farmers apply for fields each month. Arable encroachment into grazing areas is therefore a minor problem. Crop damage by cattle is likely to be more problematic.
During a National Workshop on Community Based Natural Resources Management Institutional Building held in Kang in November 1994, the Kgalagadi District Report stated that communities in the district are not benefiting anything from the parks which limit their access to land and the natural resources therein (Thusano Lefatsheng, 1994).
5.3 Socio-economic Means
Socio-economic issues are discussed in more detail in sections 2.5 and 2.7. Suffice to say here that resource pressure is highest in the vicinity of the settlements and boreholes. These are the areas to which the poor are confined. By virtue of their poverty, the poor are confined to rangelands, where resources are most rapidly diminishing. As a result of their confinement, they accelerate resource depletion and reduce their subsistence generating capacity. This process occurs throughout Botswana. For example, in the mid Boteti area, the contrast was great between degraded rangelands close to villages and remote rangeland with abundant grazing (Arntzen et al., 1994).
5.4 Conclusion
Physical availability, policies/tenure systems and socio-economic means all contribute towards the accessibility of natural resources.
Physical availability has adversely affected access to wildlife. The opposite has occurred for water, although the additional groundwater mostly benefits domestic users and rich livestock owners. The trend of other resources is not documented.
Policies and tenure systems have probably influenced resource access most. The Matsheng villages are boxed in between leasehold farms and areas reserved for wildlife. Most land is communal, set aside for mixed farming and wildlife. There is little space for communal livestock production. The area faces an enormous challenge in realising the potential of wildlife utilisation for the benefits of the communities. Allocation of hunting quota and wildlife user rights has been a recent, first step in this direction.
Socio-economic means, or the lack of them, have had a large impact on the de-facto access to resources. The poor are confined to the villages whilst the large cattle-owners can keep their cattle in remote areas (subject to groundwater availability). An important issue for this study is whether access to resources is becoming increasingly skewed against poorer people. Government policies favouring agriculture and the dynamics of the livestock sector have caused increasingly skewed distribution of resources elsewhere in the country. This process is enhanced by existing income inequalities allowing the rich to access and control more remote resources. Community-based resource management projects offer an important opportunity in the study area to redress the balance.
5.5 Topics of interest for further research which arise from the literature review
1. What is the distribution of land and water ownership and user rights?
2. What is the impact of dual grazing rights on communal rangelands and livelihoods?
3. How important are informal management rules for rangeland conditions?
4. How important is and what are the effects of the influx of outsiders into the area?
5. What are the opportunities and constraints of community-based wildlife management projects?
6. How far do resource entitlements extend for TGLP farms and for community-based natural resource management projects?
SPECIES
SETSWANA NAME
SCIENTIFIC NAME
% CHANGE BETWEEN 1978/1986
hartebeest
Kgama
Alcelaphus buselaphus
- 76.1
wildebeest
Kgokong
Connochaetes taurinus
- 94.2
springbok
Tshepe
Antidorcas marsupialis
- 7.0
ostrich
- 63.3
gemsbok
Oryx gazella
+ 35.9
eland
Phofu
Taurotragus oryx
- 46.6
kudu
Tragelaphus strepsicerus
- 15.1
Note: this period largely includes the drought period of 1982/87.
Source: Van der Maas et al., 1994.
Table 9: Single game hunting quota in Kgalagadi District (1981 and 1991)
SPECIES
1981
1997
% CHANGE
wildebeest
2324
0
--
hartebeest
1663
0
--
steenbok
1586
1340
- 15.5
duiker
1456
820
- 43.7
gemsbok
1193
615
- 48.5
springbok
742
1985
167.5
ostrich
562
0
--
eland
466
0
--
kudu
398
60
- 84.9
zebra
200
0
--
others
128
4
- 96.9
Meat weight
677 tonnes
146 tonnes
- 78.4
Total value
P 6.0 mln.
P 1.1 mln.
- 81.7
Source: calculated from DWNP data.
7.2 Veld Products
Gathering is still very common but it has lost importance with sedentarisation and the increases in livestock production and formal employment. Sedentarisation has also led to gathering concentrating in small areas around the settlement with the risk of over-exploitation.
Veld products are a neglected subject. A grapple propagation project is on-going in the RAD settlement of Ukwi. No systematic survey has been done of veld products derived from rangeland in the area. Some surveys such as Painter (1997) cover veld products but fail to mention species. Table 10 summarises a list of local veld products mentioned in various references.
Assessing the commercial potential of veld products, Taylor and Moss (1982) identified eight tree species which occur in high densities in the study area (field checks at Hukuntsi, Lehututu, Lokgwabe and Tshane; cf. Table 11.) The tree diversity appears very limited and only a few were judged to have a commercial potential at that time (early 1980s).
The Michelsen Institute (1996) considers the cultivation of some veld products such as morama, sengaparile, truffles and shrubs like Grewia spp. to be a less risky form of agriculture, which requires less care once the crops have been established. It also makes economic sense as most fields are already fenced off and protected against livestock.
Table 10: Major veld products in the study area
SPECIES
SETSWANA
ENGLISH NAME
PRODUCT / USE
COMMENT
Harpagophyton procumbens
Sengaparile
grapple plant
Tubers used for medicinal purposes
Used as dried tubers or in tablet form; distribution of this species in Matsheng area is unreliable
Grewia flava
Moretlwa
brandy bush, raisin tree
Kgadi - traditional beer
raisins are sold locally in some Matsheng villages (Taylor and Moss, 1982)
Grewia bicolor
Mogwana
Khadi- traditional beer
same as for G. flava
Dipotswa
Berries
Boroku
Mongone
Ziziphus mucronata
Mokgalo
buffalo thorn
berries
Boscia albitrunca
motlopi
mokwa
root used
Citrullus lanatus
kgengwe or tsama melon
desert melon
source of water
Acanthosicyos naudiniana
mokapana
gemsbok cucumber
source of water
Amaranthus tunbergii
thepe
wild amaranth
vegetable
the leaves are collected and cooked as spinach
Ipomea adenoids
seroa
source of water
eaten raw
borego
vegetable
Cucumis africanus
magabala
horned cucumber
vegetable
seeds can be eaten raw, roasted or boiled
Terfizia pfeilii
mahupa
Kalahari truffle
vegetable
this underground fungus (mushroom) is regarded a delicacy locally and in Europe (Taylor and Moss,1982)
Tylosema esculentum
morama bean
Gemsbok beans
seeds
the seeds are very high in protein and oil
Eragrostis pallens
Motshikiri
thatching grass
thatching
Stipagrostis uniplumis
Tshikitshane
thatching grass
thatching
Table 11: Trees occurring in high densities in the study area
Source: Taylor and Moss, 1982.
SCIENTIFIC NAME
SETSWANA NAME
PLANT DENSITY
PRODUCTS/USES
Acacia erioloba
+ 20/ha
Acacia hebecleda
some areas: 5-40/ha other areas + 40/ha
Acacia luederitzii
2-17/ha
Cassia italica
Logwabe only: + 75/ha
Gnidi polycephala
visual ass.
Grewia flava
moretlwa
visual ass.
Grewia bicolor
mogwana
visual ass.
Terminalea sericea
+ 50/ha
7.3 Livestock and Grazing
During this century, livestock products have substantially increased following the increase in livestock numbers. However, more recently, cattle numbers appear to have stabilised and the number of goats has expanded more rapidly (cf. Table 12; goats are most common in RADS settlements). The long-term increase in livestock numbers has increased the availability of livestock-related products such as milk, meat, draught power, manure, savings. Some of these products are apparently insignificant in the study area (for instance: milk and draught power; van der Maas et al., 1994). The increase in goat numbers have increased domestic slaughtering. In this respect, goats have probably replaced wildlife as a source of meat. Donkeys are important for transport and draught power.
7.4 Conclusion
Rangeland resources and products are changing due to changes in the resources (wildlife decline) and in activity patterns (sedentarisation, livestock and formal employment). Livestock products have increased during the last decades, even though some appear hardly utilised (milk, draught power). Wildlife products have substantially decreased. It is not exactly known what the trend in veld products and arable production has been.
It is most likely that these changes are inter-linked. Given the low population density, resources are not under threat of subsistence use (wildlife is a possible exception) but rather from agricultural encroachment. Kgabung's study on the impacts of livestock expansion on wildlife
Table 12: Trends in livestock numbers and performance (1980-1990)
Source: Agricultural Statistics 1980 and 1990.
VARIABLE
1980 Kgalagadi North and South
1980 Botswana (traditional)
1990
Kgalagadi North
1990
Kgalagadi South
1990 Botswana traditional
Number of cattle (000)
49
2 455
43.6
49.3
2 2211
of which: cows
19
996.5
20.5
19.2
936.9
calves
9
488.5
10.2
13.1
463.8
heifers
6
333.2
4.7
8.4
334.9
oxen
6.5
308.6
3.4
3.3
186.5
tollies
6.2
284.5
4.0
4.5
255.2
bulls
0.9
43.7
0.8
0.8
33.8
Av. herd size
54.4
42.5
48.4
54.8
39.6
Birth rate
56.4
58.4
51.7
61.6
74.0
Death rate
14.3
13.8
17.9
12.7
17.2
Sale rate
10.8
7.7
6.0
7.2
6.7
Home slaughter rate
0.4
0.7
1.1
1.9
1.4
Purchase rate
0.8
1.7
0.7
1.5
0.8
Number of Goats (000)
30
624.0
47.1
45.6
2 030.2
Average herd size
25
13.6
42.8
50.7
29.5
Male 1 yr +
3.8
76.5
5.6
7.6
307.8
Female 1 yr +
17.1
337.3
27.8
26.8
1132.8
Males under 1 yr
3.6
98.0
6.1
5.0
263.2
Females under 1 yr
5.5
112.2
7.6
6.2
326.4
Birth rate
41.3
45.0
41.0
40.2
42.3
Death rate
35.7
34.7
14.6
19.7
12.7
Sales rate
4.7
3.0
4.6
5.6
4.2
Home slaughter rate
8.3
5.1
8.1
7.5
6.4
Purchase rate
0.7
1.9
0.8
2.0
2.0
Number of sheep (000)
22
134
9.8
16.3
266.5
Average herd size
55
9.8
19.6
23.3
15.0
Number of Donkeys (000)
4.2
128.2
3.0
3.6
154.9
and veld products in the study area will provide valuable details on this issue. For the area west of Shoshong, Rampete (1996) found that livestock and borehole expansion led to a reduction in wildlife and gathering. However, he did not assess the impacts in detail.
Resource dynamics have had important socio-economic impacts including lower incomes, more efforts to hunt wildlife and to collect veld products near villages, reduced resource development potential (wildlife), and increasingly skewed distribution of rangeland products. The transformation from a hunting/gathering based economy to a livestock-dominated economy has had a profound impact on resource base, in particular wildlife, and on people's living conditions. Those who do not have livestock are marginalised as they have come to depend on crops, declining wildlife resources and government hand-outs. The question arises whether and how the majority of people are able to eke out a sustainable living from an agricultural economy as compared to a more diverse economy based on agriculture, wildlife and veld products. A further question is whether this transformation suits the local resource base, in other words does it make optimal use of the available natural resources. This includes the identification of opportunities for processing of rangeland products. A final question is to find out what is driving these changes (e.g., policies, climate change).
7.5 Topics of interest for further study which arise from the literature review
1. Role of Special Game Licenses (trends, use etc.)
2. Water supply conditions in villages + distribution of boreholes
3. Role of the most important veld products/ changes in biodiversity
4. An assessment of the cost and benefits of livestock production and wildlife utilisation in the study (private and financial). This includes an assessment of the major outputs of each activity and the trade-offs between the activities
5. Opportunities to combine crop and veld products production
6. Extent of and opportunities for processing of rangeland products.
Source: Agricultural Statistics.
Variable
1980
1980
1990
1990
1990
Kgalagadi
Botswana (traditional)
Kgalagadi South
Kgalagadi North
Botswana (traditional)
Arable land area (in 000 ha.)
1.3
325.3
2.9
2.1
345
Farms with fields (%)
Average land holding/farm (ha)
1.6
4.0
4.8
4.2
4.5
cultivators as % of farms with fields
57.1
93.1
83.3
80.0
91.1
harv area/farm (ha.)
0.5
3.7
3.3
n.a.
4.3
area planted; sorghum (1000 ha.)
0.1
142.5
0.3
0.3
180.7
same, maize (1000 ha.)
0.3
74.9
0.8
0.4
68.6
same, beans/ pulses (1000 ha)
0.2
23.4
0.3
0.2
18.5
total area planted (1000 ha.)
0.6
270.7
1.5
1.0
283.8
Yield/planted area (kg). sorghum
n.a.
33
33
106
Same, maize
0
167
13
13
62
Same, beans/pulses
17
100
86
The main constraints facing arable agriculture are:
1. The aridity and the high variability of rainfall
2. Poor quality of soils
3. Lack of draught power and implements. According to van der Maas (1994), only two- thirds of the households owning land own a plough, with the remaining proportion depending on borrowing or use hoes, spades and other rudimentary implements. Female- headed households rely more on borrowed and hired animals than male-headed ones (van der Maas et al., 1994).
Horticulture is very limited and where it exists it is rarely done by farmers but more by institutions such as the district council. Horticulture is severely inhibited by water constraints.
8.5 Conclusion
There is limited literature on resource use practices. In general, livestock practices appear fairly poor because of the high production and marketing costs. Most livestock holders are below the minimum sustainable herd size, and therefore aim to accumulate rather than sell animals. Traditional hunting practices may become less appropriate with the change in species availability and the increased distances to be covered. Information about veld products is limited, but a grapple study in nearby Tsabong suggests that commercialisation and poor harvesting practices may contribute to the disappearance of species close to settlements. In spite of the reported limited potential of conventional crop production, the majority of poor households is still very active in this sector, most likely because of lack of alternatives and government support. The choice of crops does not seem to match the physical conditions.
8.6 Topics of interest for further research which arise from the literature review
1. Details about the practices of rangeland uses, their changes and appropriateness given the physical conditions
2. Use strategies and practices by gender, income, education and ethnicity
3. Feasibility of improved practices such as combining crop and veld products
4. Determine the actual yield per hectare of relevant crop species.
9. MACRO-ECONOMIC CONDITIONS INFLUENCING LIVELIHOODS AND RANGELAND USE
Macro-economic conditions affect the livelihood of regions in the country differently. This is because they affect the level of economic activities and level of employment through investment incentives. Monetary policy, fiscal policy, exchange rate policy and general employment-targeted programs are all common macro-economic variables.
The absence of a financial and the banking system in the study area is worth considering. The nearest town where these facilities are available is Jwaneng (300 km away). This situation is an incentive for livestock accumulation as a "saving bank", causing heavy stocking and range degradation. The absence of a formal banking system has also led to limited access to credit particularly of low-income households. This must limit private investment and employment creation in the region. The few projects that occur are either by the district council or by the central government. These projects are temporary, and this has led to rural-urban migration.
It must be noted that some of Botswana's abundant mineral revenues have trickled down to rural areas and the study area has benefited from them through free access to services and subsidies. The generous subsidies have exacerbated the failures of the Government where environmental concerns were not incorporated in its policies (see section 2.9).
ANNEX 1
List of Abbreviations
ADP Agricultural Development Policy
ALDEP Arable Land Development Programme
APRU Animal Production Research Unit
ARAP Accelerated Rainfed Arable Programme
ARB Agricultural Resources Board
BAMB Botswana Agricultural Marketing Board
BIDPA Botswana Institute for Development Policy Analysis
BMC Botswana Meat Company
CSO Civil Society Organisation
DWNP Department of Wildlife and National Parks
FAP Financial Assistance Policy
GoB Government of Botswana
KDC Kgalagadi District Council
KDDP Kgalagadi District Development Plan
LSU Livestock Units
MLGLH Ministry of Local Government & Housing
NORAD Norwegian Agency for Development Cooperation
RAD Remote Area Dwellers
RADP Remote Area Development Programme in Botswana
SGL Special Game Licence
TGLP Tribal Grazing Land Policy
TOS Total Dissolved Solids
WMA Wildlife Management Area