World population projections by the major demographic agencies

Overall, population increase under current technological and political conditions will at least double the pressure on resources but rising standards of living in some regions will intensify this pressure further. It is difficult to envisage how this can be sustained as further domestication of carbon will cause serious environmental problems. 

Low adaptability generally Decrease in grain yields reduction in food security Reduction in water availability increase in desertification Increased droughts and floods will affect agriculture Increased extinctions of plants and animals  

Low adaptability in some areas average adaptability overall Inereased floods, droughts, forest fires, eyclones will cause land-cover alteration 

Deereases in agricultural productivity will compromise food security in some areas 

Some positive advantages re crop productivity, but only in short term Water resources may decline in cpiantity Heavy rains and tropical cyclones may increase infrequeney Biodiversity will decline in vulnerable areas, e.g. alpine, wetlands, semi-arid habitats and coral reefs 

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Figure 8.4. World population projections by the major demographic agencies (based on IPCC, 2000).

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