Severe soil erosion in the Yellow River basin is a significant obstruction to the sustainable management of soiland water resources. Any changes in soil erosion will have great effects on long-term planning of soil and water conservationin such a severely eroded basin. Rainfall erosivity describes the soil loss potential caused by rain, which can be expected tochange in correspondence to changes in climate. This study was conducted to assess the potential effects of climate changeon rainfall erosivity in the Yellow River basin. Two different rainfall scenarios were generated with the HadCM3 generalcirculation model for the years 2006 to 2035, 2036 to 2065, and 2066 to 2095. The statistics test showed that rainfall erosivityincreased significantly in the Yellow River basin under both scenarios for all periods in the coming decades. The erosivityincrease varied from scenario to scenario, and from period to period. Generally, increases in erosivity were less from southeastto northwest. The calculated precipitation elasticity of rainfall erosivity indicated that percent changes in rainfall erosivitywere greater than percent changes in total precipitation by a factor of 1.2 to 1.4. The expected increases in precipitationrequire that more attention will be given to soil and water conservation practices such as vegetation rehabilitation andcheck-dam construction.
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Zhang et al. (2005) studied this question.
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