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Land-use Changes and Resource Degradation in South–West Masailand, Tanzania

Published online by Cambridge University Press:  24 August 2009

Raphael B.B. Mwalyosi
Raphael B.B. Mwalyosi
Affiliation:
Senior Research Fellow, Institute of Resource Assessment, University of Dar es Salaam, PO Box 35097, Dar es Salaam, Tanzania.
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Extract

This study uses sequential aerial photography to identify environmental changes. The interpreted aerial photos constitute a data-bank of past and present land cover/uses.* Substantial changes have been observed in the areas of cultivation, woody cover, and bare ground.

An increased 449.9% of the surveyed area has been cleared for cultivation during the last 30 years, while 77.2% of the former woodland has been destroyed during the same period, contributing to a 15.6% increase in grassland. Bare ground increased by 33.1%. Increased cultivation is caused by increase in the population of subsistence farmers and mechanization. Expansion of cultivation and overexploitation of woody resources (fuel-wood and building materials) are the causes of decline in the woody vegetation. As consumption of woody resources exceeds natural regeneration, woody cover is gradually replaced by grasslands.

Diminution of the woody vegetation results in shortage of fuel-wood and building materials and consequent misery to the local people. Expansion of cultivation reduces grazing-land, leading to overstocking and overgrazing. Extensive cultivation, based on soil ‘mining’, subjects more and more land to physical and chemical soil degradation, leading in turn to decline in soil fertility and crop yields. Both overgrazing and extensive cultivation accelerate soil erosion in the area, reducing available cropland, while siltation and flooding cause serious damage to property and infrastructure.

Lack of effective land-use planning, uncontrolled population growth, and introduction of the Tanzanian village agricultural production system in a semi-arid area, have contributed to the present deplorable state of affairs. In general, the area shows increasing environmental degradation and resource depletion, while very little conservation effort is being made to reverse the trend. These results indicate that a sustainable resource management plan is urgently needed for the area.

Information

Type
Main Papers
Information
Environmental Conservation , Volume 19 , Issue 2 , Summer 1992 , pp. 145 - 152
Copyright
Copyright © Foundation for Environmental Conservation 1992

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References

Anderson, D. & Fishwick, R. (1984). Fuelwood Consumption and Deforestation in African Countries. World Bank Staff Working Paper No. 704, World Bank, Washington, DC, USA: 52 pp.Google Scholar
Arusha Region Integrated Development Plan (cited as ARIDEP) (1981). Vols 1–5 and Summary Reports. Arusha Regional Development Directorate and Arusha Planning Village Development Project, Arusha, Tanzania, September, 1981: vol. I, v + 89 pp. + Annexes, illustr.Google Scholar
Baker, R. (1984). Protecting the environment against the poor: The historical roots of the soil erosion orthodoxy in the third world. The Ecologist, 14(2), pp. 53–60.Google Scholar
Berry, R., Mascarenhas, A. & Stewart, S. (1982). East African Profiles, The United Republic of Tanzania (Revised Edition). International Development Programme, Clark University, Worcester, Massachusetts, USA: vii + 140 pp., illustr.Google Scholar
Bhagavan, M.R. (1984). The woodfuel crisis in the SADCC countries. Ambio, 13(1), pp. 25–7.Google Scholar
Boesen, J., Havnevik, K.J., Koponen, J. & Odgaard, R. (Eds) (1986). Tanzania: Crisis and Struggle for Survival. Scandinavian Institute for African Studies, Uppsala, Sweden: 325 pp.Google Scholar
Borner, M. (1985). The increasing isolation of Tarangire National Park. Oryx, 19(2), pp. 91–6.CrossRefGoogle Scholar
Brown, L.H. (1971). The biology of pastoral Man as a factor in conservation. Biological Conservation, 3, pp. 93–100.CrossRefGoogle Scholar
Bryan, R. (1980). Soil Degradation and Conservation in the Arusha Region. Development Alternatives Inc., Washington, DC, USA: vi + 63 pp. (mimeogr.).Google Scholar
Cloudsley-Thompson, J.L. (1988). Desertification or sustainable yields from arid environments. Environmental Conservation, 15(3), pp. 197–204, 7 figs.CrossRefGoogle Scholar
Deshmukh, I. (1986). Ecology and Tropical Biology. Blackwell Scientific Publications, Palo Alto-Oxford-London-Edinburgh-Boston & Victoria: xii + 387 pp., illustr.Google Scholar
Douglas-Hamilton, I. (1972). On the Ecology and Behaviour of the African Elephant. DPhil thesis, University of Oxford, England, UK: xiv + 271 pp., illustr.Google Scholar
Dunford, C., Mouat, D.A., Norton-Griffiths, M. & Slaymaker, D.M. (1983). Remote sensing for rural development planning in Africa. ITC Journal, 2, pp. 99–108.Google Scholar
Earth Satellite Corporation (1977). Potential Groundwater and Land Resources Analysis for Planning and Development. Arusha Region, United Republic of Tanzania, Vol. III, Phase Two-Final Report: Berkeley, Washington, USA: 121 pp., illustr.Google Scholar
Ecosystems Ltd (1980). Livestock, Wildlife and Land-use Survey. Arusha Region, Tanzania. Final Report (3 vols), Ecosystems Ltd., Nairobi, Kenya: vii + 103 pp., illustr.Google Scholar
Ellison, L. (1960). Influence of grazing on plant succession of rangelands. The Botanical Review, 26(1), pp. 1–79.CrossRefGoogle Scholar
El-Swaify, S.A. & Dangler, E.W. (1982). Rainfall erosion in the tropics: A State-of-the-Art. Pp. 1–26 in Soil Erosion and Conservation in the Tropics: ASA Special Publication, Number 43. The American Society of Agronomy, Soil Science Society of America, Madison, Wisconsin, USA: [not available for checking].Google Scholar
Gillman, C. (1930). Notes on Soil Erosion in East Africa. Gillman Papers, Hans Cory Collection, University of Dar es Salaam, Tanzania: [not available for checking].Google Scholar
Gulliver, P.H. (1969). The conservative commitment in northern Tanzania: The Arusha and Masai. Pp. 223–42 in Tradition and Transition in East Africa. Routledge & Kegan Paul, London, England, UK: [not available for checking].CrossRefGoogle Scholar
Hathout, S.A. (1983). Soil Atlas of Tanzania. Tanzania Publishing House, Dar es Salaam, Tanzania: iii + 29 pp., illustr.Google Scholar
Homewood, K.M. & Rodgers, W.A. (1984). Pastoralism and conservation. Human Ecology, 12(4), pp. 431–41.CrossRefGoogle Scholar
Hornby, H.E. (1936). Overstocking in Tanganyika Territory. East African Agricultural Journal, 1, pp. 353–60.CrossRefGoogle Scholar
Jacob, A.L. (1975). Masai pastoralism in historical perspective. Pp. in Pastoralism in Tropical Africa (Ed. Monod, T.). Oxford University Press, London, England, UK: [not available for checking].Google Scholar
Kahurananga, J. (1981). Population estimates, densities, and biomass of large herbivores in Simanjiro plains, Northern Tanzania. African Journal of Ecology, 19, pp. 225–38.CrossRefGoogle Scholar
Kilimo, D.A.R. (1988). Basic Data, Agriculture and Livestock Sector (1982/83–1986/87). Planning and Marketing Division, Ministry of Agriculture and Livestock Development, Dar es Salaam, Tanzania: viii + 148 pp. (mimeogr.).Google Scholar
Krings, T. (1987). The advantage and risks of ox-ploughing and monoculture in the Central and Southern Savannas of the Republic of Mali. Applied Geography and Development, 30, pp. 40–63.Google Scholar
Lamprey, H.F. (1964). Estimation of the large mammal densities, biomass and energy exchange in the Tarangire Game Reserve and the Masai Steppe in Tanganyika. East African Wildlife Journal, 2, pp. 1–46.CrossRefGoogle Scholar
Laws, R.M. (1970). Elephants as agents of habitat and landscape changes in East Africa. Oikos, 21, pp. 1–15.CrossRefGoogle Scholar
Longhurst, W.M. & Heady, H.F. (Eds) (1968). Report of a Symposium on East African Range Problems. Villa Serbelloni, Lake Como, Italy: v + 119 pp.Google Scholar
Loth, P.E. & Prins, H.H.T. (1986). Spatial patterns of the landscape and vegetation of Lake Manyara National Park. ITC Journal, 2, pp. 115–30.Google Scholar
Mabbutt, J.A. (1984). A new global assessment of the status and trends of desertification. Environmental Conservation, 11(2) pp. 103–13, 5 figs and 2 tables.CrossRefGoogle Scholar
Milas, S. (1984). Population crisis and desertification in the Sudano-Sahelian Region. Environmental Conservation, 11(2), pp. 167–9, 4 figs.CrossRefGoogle ScholarPubMed
Milas, S. (1985). The population growth and desertification crisis. Mazingira, 8(4), pp. 28–31.Google ScholarPubMed
Ministry of Lands, Natural Resources and Tourism (cited as MLNRT) (1989). Tanzania Forestry Action Plan, 1990/91–2007/08. Ministry of Lands, Natural Resources and Tourism, Forestry and Beekeeping Division, Dar es Salaam, Tanzania: vi + 114 pp., illustr., 2 Appendices.Google Scholar
Mlay, W. (1981). Assessment of Inter- and Intra-regional Migration in Arusha Region. Arusha Regional Development Directorate, Arusha, Tanzania: v + 110 pp.Google Scholar
Moore, J.E. (1971). Rural population carrying capacity of the districts of Tanzania. BRALUP Research Paper No. 18, University of Dar es Salaam, Tanzania: 45 pp.Google Scholar
Murray-Rust, H. (1971). Soil erosion and sedimentation in Kisongo catchment, Arusha Region. BRALUP Research Paper No. 17, University of Dar es Salaam, Tanzania: 19 pp., illustr.Google Scholar
Mwalyosi, R.B.B. (1981). Ecological changes in Lake Manyara National Park. African Journal of Ecology, 12, pp. 201–4.CrossRefGoogle Scholar
Mwalyosi, R.B.B. (1987). Decline of Acacia tortilis in Lake Manyara National Park. African Journal of Ecology, 25, pp. 51–5.CrossRefGoogle Scholar
Mwalyosi, R.B.B. & Yanda, P.Z. (1989). Water potentials in the Lake Manyara catchment basin. Institute of Resource Assessment (IRA) Research Paper No. 20, University of Dar es Salaam, Tanzania: 36 pp., illustr.Google Scholar
Norton-Griffiths, M. (1988). Aerial point sampling for land-use surveys. Journal of Biogeography, 15, pp. 149–56.CrossRefGoogle Scholar
Novkoff, G. (1983). Desertification by overgrazing. Ambio, 12(2), pp. 102–5.Google Scholar
Owen, D.F. (1976). Human inequality: An ecologist's point of view. Oikos, 27, pp. 2–8.CrossRefGoogle Scholar
Peden, D.G. (1987). Livestock and wildlife population distribution in relation to aridity and human populations in Kenya. Journal of Range Management, 40(1), pp. 67–71.CrossRefGoogle Scholar
Peterson, D.D. (1976). A Survey of Livestock and Wildlife Seasonal Distribution in Areas of Masailand Adjacent to Tarangire Park, Final Report. Arusha Regional Development Directorate, Arusha, Tanzania: 38 pp., illustr.Google Scholar
Pimentel, D., Dazhong, W., Eigenbode, S., Lang, H., Emerson, D. & Karasik, M. (1986). Deforestation: Interdependency of fuelwood and agriculture. Oikos, 46(3), pp. 404–12.CrossRefGoogle Scholar
Pomeroy, D.E. & Service, M.W. (1986). Tropical Ecology. Longman Scientific & Technical, Longman Group Limited, London, England, UK: 233 pp., illustr.Google Scholar
Pratt, D.J. & Gwynne, M.D. (1977). Rangelands Management and Ecology in East Africa. Hodder & Stoughton, London, England, UK: 310 pp.Google Scholar
Prins, H.H.T. (1987 a). The Buffalo: The Individual in the Context of Herd Life in a Seasonal Environment of East Africa. Rijksuniversiteit Te Groningen, Groningen, The Netherlands: xii + 283 pp., illustr.Google Scholar
Prins, H.H.T. (1987 b). Nature conservation as an integral part of optimal land-use in East Africa: The case of the Masai Ecosystem of Northern Tanzania. Biological Conservation, 40(2), pp. 141–61.CrossRefGoogle Scholar
Rapp, A. (1975). Soil erosion and sedimentation in Tanzania and Lesotho. Ambio, 4(4), pp. 154–63.Google Scholar
Rapp, A., Houerou, H.N. le & Lundholm, B. (Eds) (1976). Can Desert Encroachment be Stopped?; a Study with Emphasis on Africa. UNEP and SIES, Stockholm, Sweden: 241 pp., illustr.Google Scholar
Repetto, R. & Holmes, T. (1983). The role of population in resource depletion in developing countries. Population and Development Review, 9(4), pp. 609–28.CrossRefGoogle Scholar
Riquier, J. (1982). A world assessment of soil degradation. Nature and Research, 18(2), pp. 18–21.Google Scholar
Sinclair, A.R.E. & Fryxell, J.M. (1985). The Sahel of Africa: Ecology of a disaster. Canadian Journal of Zoology, 63, pp. 987–94.CrossRefGoogle Scholar
Smith, B. & Baillie, C. (1985). Erosion in the savannas. The Geographical Magazine, 107, pp. 137–41.Google Scholar
Snedecor, G.W. & Cochran, W.G. (1967). Statistical Methods (6th edn). Iowa State University, Ames, Iowa, USA: xiv + 593 pp.Google Scholar
Snelson, D. (Ed.) (1986). Tarangire National Park. Tanzania National Parks-African Wildlife Foundation, Nairobi, Kenya: 56 pp., illustr.Google Scholar
Soule, M.E. (1986). Conservation Biology: The Science of Scarcity and Diversity. Sinauer Associates Inc., Sunderland, Massachusetts, USA: 584 pp.Google Scholar
Sundborg, A. & Rapp, A. (1986). Erosion and sedimentation by water: Problems and Prospects. Ambio, 15(4), pp. 215–25.Google Scholar
Swift, J. (1976). Desertification and Man in the Sahel. Africa Development, 1(2), pp. 1–8.Google Scholar
Toit, R.F. du (1985). Soil loss, hydrological changes, and conservation attitudes, in the Sabi catchment of Zimbabwe. Environmental Conservation, 12(2), pp. 157–66, 5 figs and table.CrossRefGoogle Scholar
Whitlow, R. (1988). Soil erosion and conservation policy in Zimbabwe: Past, present, and future. Land Use Policy, 5, pp. 419–33.CrossRefGoogle Scholar
Whitlow, R. & Campbell, B. (1989). Factors influencing erosion in Zimbabwe: A statistical analysis. Journal of Environmental Management, 29, pp. 17–29.Google Scholar