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三峡库区是指重庆市至湖北省宜昌市三峡水库集水区范围内所涉及的21个县(市),该区人均土地0.447hm~2,人均耕地仅0.063hm~2,中低产田面积占总耕地面积的90.8％,旱地面积占66.3％,其中坡旱地占旱地面积的83.1％,库区大于25°的坡耕地占总耕地面积的17.6％;三峡库区森林覆盖率低,沿江地带仅5％左右,水土流失面积占库区土地面积的75.5％;土壤侵蚀严重,特别是含有机质与营养元素较多的表土侵蚀,使土层变薄,肥力下降,导致大面积土
The Three Gorges Reservoir Area refers to 21 counties (cities) covered by the Three Gorges Reservoir Catchment from Chongqing City to Yichang City, Hubei Province. The per capita land area in this area is 0.447hm ~ 2, per capita arable land is only 0.063hm ~ 2, Accounting for 90.8% of the total cultivated land area and dry land area accounting for 66.3%, of which dryland covers 83.1% of the dry land area and sloping land larger than 25 ° in the reservoir area accounts for 17.6% of the total cultivated land area. The Three Gorges Reservoir area has low forest coverage, Only about 5%, soil erosion area accounted for 75.5% of the land area of the reservoir area; soil erosion is serious, especially with topsoil erosion containing more organic matter and nutrients, the soil thinning, fertility decline, resulting in a large area of soil