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1950～1973年,由于人口的增长和人民生活的富裕,世界粮食用量翻了一番.如果预计人口和收入增长的实现,到本世纪末,粮食将再需翻番.五十年内世界粮;食需要史无前例的增长四倍给世界许多土壤以更大的压力,使土壤侵蚀加速.
World food consumption doubled between 1950 and 1973 due to population growth and people’s well-being.If population and income growth are to be expected, food will need to double by the end of this century again. The unprecedented increase of four times gives greater pressure to many soils in the world and accelerates soil erosion.