The most severe challenges to sustainable development occur where many poor people struggle to eke out a living from marginal lands. In some cases, high human populations on fragile lands have led agricultural productivity to deteriorate (García-Barrios and García-Barrios, 1990, Mink, 1993,...

Links between poverty and natural resource degradation are examined in the context of soil erosion, fertility loss and overgrazing in the Peruvian Altiplano. Multiple regression analysis of 1999 farm survey data examines 1) what agricultural practices affect natural resource degradation, and...