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我国水资源总量比较丰富,约为3万亿立方米,为世界六大重要的淡水国家之一,其中地表水占到了90%以上。但如果按照人均计算,我国人均水资源占有量不高,大约排在世界上第130位,属于严重缺水国家,其中宁夏、河北、山东、河南等六省(区)属于极度缺水,其人均水资源量低于500立方米。另外,我国水资源地区分布不均,水土资源不相匹配。黄土高原的降水量年际
The total amount of water resources in our country is relatively abundant, about 3 trillion cubic meters, one of the six major freshwater countries in the world, of which surface water accounts for more than 90%. However, according to per capita calculation, China’s per capita water resource share is not high, ranking the 130th in the world. It belongs to a serious water-scarce country. Among them, six provinces (regions) such as Ningxia, Hebei, Shandong and Henan are extremely short of water. Per capita water resources less than 500 cubic meters. In addition, uneven distribution of water resources in our country, land and water resources do not match. Precipitation in the Loess Plateau