Desertification and global change

Arid and semiarid regions cover one third of the continental areas on Earth. These regions are very sensitive to a variety of physical, chemical and biological degradation processes collectively called desertification. Although interest in desertification has varied widely in time, there is a renewed concern about the evolution of dryland ecosystems because (1) a significant fraction of existing drylands already suffers from miscellaneous degradation processes, (2) increasing populations will inevitably result in further over-utilization of the remaining productive areas, (3) climatic changes expected from the greenhouse warming might result in drier continental interiors, and (4) some of the desertification processes themselves may amplify local or regional climatic changes. This paper reviews some of the many aspects of this issue in the context of the Global Change research program.

[1]  Michel M. Verstraete,et al.  The representation of continental surface processes in atmospheric models , 1990 .

[2]  W. Kellogg,et al.  Sensitivity of Soil Moisture to Doubling of Carbon Dioxide in Climate Model Experiments. Part I: North America , 1988 .

[3]  D. Gillette,et al.  Threshold friction velocities and rupture moduli for crusted desert soils for the input of soil particles into the air , 1982 .

[4]  A. Henderson‐sellers,et al.  The greenhouse effect : living in a warmer Australia , 1989 .

[5]  Lynn Margulis,et al.  Gaia: An Atlas of Planet Management , 1984 .

[6]  S. Nicholson.  Land surface atmosphere interaction , 1988 .

[7]  E. L. Skidmore,et al.  Wind erosion climatic erosivity , 1986 .

[8]  S. Nicholson.  LONG‐TERM CHANGES IN AFRICAN RAINFALL , 1989 .

[9]  P. Paylore,et al.  Deserts of the world : an appraisal of research into their physical and biological environments , 1970 .

[10]  Daniel Hillel,et al.  Introduction to soil physics , 1982 .

[11]  J. Schechter,et al.  Desertification: Its causes and consequences: Secretariat of the United Nations Conference on Desertification. Pp. 448. Pergamon Press. 1977. £28.00 ($50.00) , 1978 .

[12]  M. Verstraete,et al.  Modeling surface processes in atmospheric general circulation models , 1986 .

[13]  W. Gibbs.  Drought - its definition, delineation and effects. , 1975 .

[14]  T. Cloudsley.  Drought and Hunger in Africa: Denying famine a future , 1988 .

[15]  J F Reynolds,et al.  Biological Feedbacks in Global Desertification , 1990, Science.

[16]  A. Warren,et al.  Ecological change and desertification , 1977 .

[17]  T. Carlson,et al.  The Large-Scale Movement of Saharan Air Outbreaks over the Northern Equatorial Atlantic , 1972 .

[18]  W. G. Matlock,et al.  Desertification of Arid Lands , 1977 .

[19]  B. Pinty,et al.  The potential contribution of satellite remote sensing to the understanding of arid lands processes , 2004, Vegetatio.

[20]  R. L. Heathcote.  Drought in Australia: A Problem of Perception , 1969 .

[21]  Paul R. Ehrlich,et al.  Termination of Pregnancy bill , 1966 .

[22]  H. Lamb.  Climate: present, past and future , 1977 .

[23]  R. F. Peel,et al.  Saharan dust: Mobilization, transport, deposition , 1980 .

[24]  Michel M. Verstraete,et al.  Defining desertification: A review , 1986 .

[25]  M. Glantz.  Drought and Hunger in Africa , 1987 .

[26]  Vaclav Smil,et al.  World Resources 1986 , 1986 .

[27]  H. Heywood.  The Physics of Blown Sand and Desert Dunes , 1941, Nature.

[28]  M. Schlesinger.  Model Projections of the Climatic Changes Induced by Increased Atmospheric CO2 , 1989 .

[29]  D. Gilbert.  Global warming , 1990, Nature.