论文部分内容阅读
据水利部公布的全国第二次水土流失遥感调查结果,全国水土流失面积已由1990年第一次遥感时的367万平方公里,减少为目前的356万平方公里。其中水蚀面积165万平方公里,风蚀面积191万平
According to the second national survey of soil and water loss released by the Ministry of Water Resources, the area of water and soil loss in China has been reduced from 3.67 million square kilometers at the time of the first remote sensing in 1990 to the current 3.56 million square kilometers. Water erosion area of which 1.65 million square kilometers, wind erosion area of 1910000 square