Abstract
Abstract Accelerated soil erosion is both a severe environmental problem in many parts of the world and a classic problem of physical geography. This article reviews some central issues of soil erosion and soil loss tolerance and presents an exercise on the geography of soil erosion. The goal of the review section is to update and recast the questions of soil erosion in light of current physical geography and environmental awareness. We review environmental problems of accelerated erosion, the essential processes of soil loss, why soil loss prediction is necessary, and tolerance values and land sustainability. The main goals of the exercise are to teach students about the physical and cultural components of soil erosion and sustainable land use. In this exercise students 1) estimate soil losses based on included tables for three regions across the United States, and 2) answer questions about the factors of soil loss, soil conservation, and sustainability. The exercise also integrates the geography of soil...
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