Science and the desertification debate

Desertification is an environmental issue that has major environmental and social dimensions, and which has been controversial in a number of respects. The recent UN Convention on Desertification and Drought places considerable emphasis on the social dimensions of the problem and the role local peoples and NGOs have to play in tackling it. When desertification first became regarded as a major issue in the 1970s, science was seen to have a major role in understanding and solving the problem, but in some circles has been regarded as failing to contribute usefully. This paper explores the nature of scientific contributions, why science may have been seen to fail to serve the needs of policy-makers, and why scientific findings may have been misinterpreted in broader circles dealing with the issue. It concludes by identifying areas where science has still a valuable role to play in an issue that is now perhaps regarded as more political and social than scientific.

[1]  Niall P. Hanan,et al.  Assessment of Desertification Around Deep Wells in the Sahel Using Satellite Imagery , 1991 .

[2]  I. Livingstone.  Economic Irrationality Among Pastoral Peoples: Myth or Reality? , 1977 .

[3]  S. Milton,et al.  Effects of the 1990/91 drought on rangeland in the Steytlerville Karoo. , 1995 .

[4]  M. Hulme.  Is environmental degradation causing drought in the Sahel , 1989 .

[5]  Ulf Helldén,et al.  Desertification - time for an assessment? , 1991 .

[6]  J. Charney,et al.  Drought in the Sahara: A Biogeophysical Feedback Mechanism , 1975, Science.

[7]  THE LIGHT AND THE WAY IN SOUTH AFRICAN DESERTIFICATION RESEARCH , 1996 .

[8]  Lennart Olsson.  On the Causes of Famine - Drought, Desertification and Market Failure in the Sudan , 1993 .

[9]  Y. Sud,et al.  The future of deserts , 1996 .

[10]  C. Agnew,et al.  A framework for tackling drought and land degradation , 1996 .

[11]  David S. G. Thomas,et al.  World atlas of desertification. , 1994 .

[12]  T. Kuhn,et al.  The Structure of Scientific Revolutions. , 1964 .

[13]  C. Vogel,et al.  Historical evidence for Southern Oscillation‐southern African rainfall relationships , 1990 .

[14]  Harold Brookfield,et al.  Land degradation and society , 1988 .

[15]  M. Hulme.  Rainfall changes in Africa: 1931–1960 to 1961–1990 , 1992 .

[16]  David D Kemp.  Global Environmental Issues: A Climatological Approach , 1990 .

[17]  Nick Middleton,et al.  Desertification: Exploding the Myth , 1996 .

[18]  Julia Walker,et al.  The effect of soil moisture on circulation and rainfall in a tropical model , 1977 .

[19]  A. Reenberg.  Henry Nol Le Houérou: The grazing land ecosystems of the African Sahel. (Ecological studies, 75). , 1989 .

[20]  J. Rhoades.  Soil salinity - causes and controls. , 1990 .

[21]  K. Baker,et al.  Assessment of desertification and drought in the Sudano-Sahelian region, 1985-1991. , 1994 .

[22]  A. Goudie.  Techniques for desert reclamation , 1992 .

[23]  P. Blaikie,et al.  Measuring land degradation. , 1991 .

[24]  Anders Bjorkelo,et al.  Adapting to Drought: Farmers, Famines, and Desertification in West Africa , 1991 .

[25]  C. Tucker,et al.  Expansion and Contraction of the Sahara Desert from 1980 to 1990 , 1991, Science.

[26]  P. Blaikie.  Explanation and policy in land degradation and rehabilitation for developing countries , 1989 .

[27]  U. Helldén.  Desertification monitoring: is the desert encroaching? , 1988 .

[28]  D. Thomas.  Sandstorm in a teacup? Understanding desertification , 1993 .

[29]  D. L. Scarnecchia,et al.  The Grazing Land Ecosystems of the African Sahel , 1991 .

[30]  Anthony Hallam,et al.  Great Geological Controversies , 1983 .

[31]  N. Abel,et al.  A rapid method for assessing rates of soil erosion from rangeland: an example from Botswana. , 1987 .