[1]
|
L. R. Oldeman, R. T. A. Hakkeling, and W. G. Sombroek, “World map of the status of human induced soil degradation: An explanatory note,” ISRIC/UNEP, Wageningen, The Netherlands, 1991.
|
[2]
|
H. Dregne, M. Kassas, and B. Rozanov, “Status of deserti- fication and implementation of United Nations plan to combat desertification,” Desertification Control Bulletin, No. 20, pp. 6, 1991.
|
[3]
|
C. de Haan, H. Steinfeld, and H. Blackburn, “Livestock and the Environment: Finding a balance,” Study sponsored by the European Commission, FAO and World Bank, 1997.
|
[4]
|
I. Scoones, (Ed.) “Living under uncertainty: New directions in pastoral development in Africa,” Intermediate Techno- logy Publications, London, 1994.
|
[5]
|
T. Amede, et al., “Maximizing benefits from livestock- water venture in Sub-Saharan Africa: From concepts to practices,” The International Water Management Institute/ International Livestock Research Institute, Addis Ababa, Ethiopia, 2009.
|
[6]
|
A. K. Acharya and N. Kafle, “Land degradation issues in Nepal and its management: Through agroforestry,” The Journal of Agriculture and Environment, Vol. 10, June 2009.
|
[7]
|
A. de Sherbinin, “CIESIN thematic guide to land-use and land-cover change,” Center for International Earth Science Information Network (CIESIN), Columbia University, Palisades, NY, USA, 2002.
|
[8]
|
G. B. Thapa and G. S. Paudel, “Evaluation of the livestock carrying capacity of land: Resources in the Hills of Nepal based on total digestive nutrient analysis,” Agriculture, Ecosystems & Environment, Vol. 78, No. 3, pp. 223–235, May 2000.
|
[9]
|
D. G. Wilcox and J. F. Thomas, “The Fitzroy valley regeneration project in Western Australia,” in J. A. Dixon, D. E. James and P. B. Sherman, Eds., “Dry management: Economic case studies,” Earthscan Publications Ltd., London, 1990.
|
[10]
|
L. C. Braat and J. B. Opschoor, “Risk in the Botswana range-cattle system,” in J. A. Dixon, D. E. James and P. B. Sherman, Eds., “Dry management: Economic case studies,” Earthscan Publications Ltd., London 1990.
|
[11]
|
C. Berrings and D. I. Stern, “Modelling loss of resilience in agroecosystems: Rangelands in Botswana,” Environ- mental and Resource Economics, Vol. 16, No. 12, pp. 185–210, 2000.
|
[12]
|
D. Pearce, E. Barbier, and A. Markandya, “Sustainable development: Economics and environment in the Third World,” Edward Elgar, England, 1990.
|
[13]
|
A. R. Gigengack, C. J. Jepma, D. MacRae, and F. Poldy, “Global modelling of dryland degradation,” in J. A. Dixon, D. E. James and P. B. Sherman, Eds., “Dry management: Economic case studies,” Earthscan Publications Ltd., Lon-don, 1990.
|
[14]
|
H. A. Simon, “Causal ordering and identifiability,” in W. C. Hood and T. C. Koopmans, Eds., “Studies in econometric method,” Cowles Foundation Monograph, No. 14, Yale University Press, New Haven, 1953.
|
[15]
|
E. Abdelgalil, “Economic policies for sustainable resource development: Models applied to Sudan,” PhD thesis, Eras-mus University Rotterdam, The Netherlands, 2000.
|
[16]
|
M. Fafchamps, “The tragedy of the commons, livestock cycles, and sustainability,” Journal of African Economies, Vol. 7, No. 3, pp. 384–423, 1998.
|
[17]
|
J. Ellis, “Climate variability and complex ecosystem dy-namics: Implications for pastoral development,” in I. Scoones, Ed., “Living under uncertainty: New directions in pastoral development in Africa,” Intermediate Technology Publications, London, 1994.
|
[18]
|
R. Ramcharan, “Money, meat, and inflation: Using price data to understand an export shock in Sudan,” IMF Working Paper WP/02/84, 2002.
|
[19]
|
R. H. Behnke, I. Scoones, and C. Kerwin, “Range Eco- logy at Disequilibrium,” ODI, London, UK, 1993.
|