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我国的水资源十分短缺,根据计算,全国每人每年平均占有水量为2700立方米,为全世界人均的25％,列世界的第88位。我区境内的地下水和地表水资源也很有限,人均每年占有水量仅为2558立方米。平均每亩土地占有水量仅为40立方米,相当于全国水平的十五分之一。再加上年内降雨集中,年际变化大,造成了一些地区水旱灾害频繁,水资源与国民经济需求矛盾突出。水是重要的自然资源,人类生存和一切生产都离不开水。水又有“利”和“害”的两重性,水还有多种功能和广泛用途。为了变水害为水利,充分发挥水的功能,必须对水资源实际综合开发利用和综合防治,以给
China’s water resources are in short supply. According to calculations, the average annual water consumption per person in the country is 2,700 cubic meters per year, accounting for 25% of the world’s population and 88th in the world. The groundwater and surface water resources in our area are also very limited, and the average per capita annual water consumption is only 2,558 cubic meters. The average amount of water per mu of land is only 40 cubic meters, equivalent to one-fifteenth of the national level. Coupled with the concentration of rainfall during the year and the large interannual variations, it has caused frequent floods and droughts in some areas and highlighted the contradiction between water resources and the national economy. Water is an important natural resource, and human existence and all production are inseparable from water. Water has the dual nature of “profit” and “harm”. Water also has many functions and uses. In order to change water damage into water conservancy and give full play to the function of water, we must comprehensively develop, utilize and comprehensively control water resources to give