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一、如何看待我省土壤侵蚀的严重性 一谈到土壤侵蚀或水土流失,人们自然就会联想到黄土高原千沟万壑、寸草难生的荒芜景象;那里年侵蚀模数可达几千上万吨。但黄土高原的土层厚度却有100～200米,个别地方达300米以上,而且结构均匀。对照我省,虽然现阶段的年平均悬沙侵蚀模数只有322吨/平方公里,年流出省的泥沙总量约为6100万吨,但若从土壤流失率,即流失土壤量占流失区土壤总量的百分比来看,却远较黄土高原严重。尽管我省土壤资源的
One, how to treat the seriousness of soil erosion in our province When it comes to soil erosion or soil erosion, people will naturally think of the valleys and valleys of the Loess Plateau, cramped scenes of desolation; where the annual erosion modulus of up to thousands Tens of tons. However, the Loess Plateau soil thickness is 100 ~ 200 meters, some places up to 300 meters above, and the structure is uniform. In comparison with our province, although the annual average suspended sediment erosion modulus is only 322 tons per square kilometer, the annual sediment discharge from the province is about 61 million tons. However, if the rate of soil loss, that is, the amount of lost soil, accounts for the lost area The percentage of total soil, but far more serious than the Loess Plateau. Despite the province’s soil resources