谈谈全国水土保持情况普查及成果运用

Discussion on National Soil and Water Conservation Survey and Application of Results

在2010年第一次全国水利普查中,同步开展了我国水土保持情况普查。我国现有土壤侵蚀总面积为294.91万km2,其中水力侵蚀面积129.32万km2、风力侵蚀面积165.59万km2,与第二次全国土壤侵蚀遥感调查的面积355.55万km2相比,土壤侵蚀面积减少了60.64万km2,其中水力侵蚀面积减少35.56万km2、风力侵蚀面积减少25.08万km2。本次普查全面查清了土壤侵蚀分布、面积与强度和侵蚀沟道的数量、面积与分布,水土流失严重地区仍然在长江上中游、黄河中上游、东北黑土区和西南岩溶区等地区,防治任务仍然十分艰巨。要充分利用好全国第四次土壤侵蚀普查和水土保持措施等情况普查成果,认真落实《全国水土保持信息化规划》确定的任务,全力推进我国水土保持信息化、现代化建设。

During the first China Census for Water in 2010,we conducted China soil and water conservation survey synchronously. The existing total area of soil erosion in China is 2. 949 1 million km2,of which,water erosion area is 1. 293 2 million km2and wind erosion area is 1. 655 9 million km2. Comparing with 3. 555 5 million km2that was obtained through the second national remote sensing survey on soil erosion,the area of soil erosion has reduced 0. 606 4 million km2,of which,the area of water erosion reduced 0. 355 6 million km2and the area of wind erosion reduced 0. 250 8 million km2. The survey had made a thorough investigation of the distribution of soil erosion,area and intensity,number of eroded gullies,area and distribution and the areas of the upper and middle reaches of the Yangtze River,the middle and upper reaches of the Yellow River,black soil region in northeast China and karst region in southwest China still the severe soil and water loss area,where the task of prevention and control is still very arduous. It should fully utilize the results of the fourth national soil erosion survey and soil and water conservation measures survey,earnestly implement the defined tasks of the National Soil and Water Conservation Informatization Planning and go all out to promote the national informatization and modernization building of soil and water conservation.