POL469H1 Lecture Notes - Tillage, Land Degradation, System Dynamics
Document Summary
Idsb02 readings global desertification: building a science for dryland development. Drylands cover about 41% of the earth"s surface and are home to ~38% of the population but some form of severe land degradation is present between 10-20% of this land. This will affect some 250 m people in developing nations. This estimate will increase with climate change and pop growth. Un adopted the convention to combat desertification the ccd. Ccd contributed by giving a definition of desertification in which stated land degradation in arid, semi-arid and dry sub humid areas resulting from various factors (including climatic variations and human activities-> biophysical factors and social factors) However the ccd receive little exposure in popular and scientific media; b/c no intl" science program. The dryland development paradigm (ddp) centres on the livelihoods of human populations in drylands and their dependencies on the environment (through study of human-environmental systems) Ddp responds to recent research and policy trends.
