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我国的长江、黄河、淮河、海滦河、辽河、珠江和松花江,地位重要,总流域面积虽不到全国的一半,但总人口占全国的78%,总耕地占全国的83%。工农业产值也占有很重要位置,是我国政治经济文化的中心地区。因此,七大江河水量的多年变化规律如何?多年平均水量有多少?是流域水资源开发利用的基础,值得深入探讨。本文根据各流域具有60年以上
China’s Yangtze River, the Yellow River, the Huaihe River, the Luanhe River, the Liaohe River, the Pearl River and the Songhua River are in a very important position. Although the total basin area is less than half of the national average, the total population accounts for 78% of the country’s total and the total cultivated land accounts for 83% of the national total. The output value of industry and agriculture also occupies a very important position and is the center of China’s political, economic and cultural fields. Therefore, how many years of water changes in the seven major rivers and how many years of average water? It is the basis for the development and utilization of water resources in the basin, which is worth exploring in depth. This article based on the basin with more than 60 years