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一、基本情况 1.水土资源长江是我国最大的河流。从年总迳流量说,居世界大河流中的第四位;从水力蕴藏量说,居世界大河流中的第三位;从流域面积的大小说,则居世界大河流中的第七位。它的主要支流—岷江、嘉陵江、乌江、沅水、资水、汉水和赣江等,都有辽阔的流域面积、丰富的水量和巨大的水力资源。由于地理环境和各种自然条件的优越,长江流域的水土资源是异常丰富的。数千年以来,它就是我国农业生产最发达的地区,也是我国文化和经济最繁荣的地区。
First, the basic situation 1. Land and Water Yangtze River is China’s largest river. From the total annual flow said that in the world’s largest river in the fourth place; from the hydraulic reserves that the world’s third largest river; from the size of the basin area, then the world’s largest river in the seventh . Its main tributaries, such as Minjiang River, Jialing River, Wujiang River, Yuan River, Zishui River, Han River and Ganjiang River, have vast drainage areas, abundant water resources and huge water resources. Due to the superior geographical environment and various natural conditions, the water and land resources in the Yangtze River Basin are extremely rich. For thousands of years, it is the most developed area for agricultural production in our country, and it is also the most prosperous region in our country in terms of culture and economy.