本文利用现有的侵蚀速率与生产力关系的资料，估算非洲大陆过去因侵蚀造成的农作物产量的损失，并预测未来３０年间农作物产量的损失。经过对现有资料的分析表明，过去因侵蚀造成农作物减产 ２％～４０％，非洲大陆平均为 ８． ２％，非洲撒哈拉地区为６.２%。若土壤加速侵蚀不能被减轻，那么到２０２０年，非洲大陆农作物产量将减少１６．５％，撒哈拉地区减少１４．５％． In this paper, we use existing data on the relationship between erosion rate and productivity to estimate the past loss of crop yields from erosion in the African continent and forecast the loss of crop yields in the next 30 years. An analysis of the available data shows that in the past, crop yields were reduced by 2% to 40% due to erosion, with an average of 8 on the African continent. 2% in sub-Saharan Africa and 6.2% in sub-Saharan Africa. If accelerated soil erosion can not be mitigated, then by 2020 crop production in the continent will decrease by 16.5% and in the Sahara by 14.5%.