从河流网系整体出发开发整治长江流域

长江是我国最大的河流,干流长6300km,流域面积180万 km~2,占全国国土面积的1/5。整个流域大部分位于湿润亚热带地区,具有丰富的自然资源,工农业产值占全国的45%,是我国最发达的地区。但流域内地区发展很不平衡,下游地区的发展超过中游和上游,干流沿岸城市的发展超过丘陵山区。因此,从河流网系整体出发,均衡开发长江流域很有必要。

EXPLOITING YANGTZE RIVER NETWORK AS WHOLE

The network of Yangtze river with the length of 6300 km.is the largest oneoccuping 1.8 million km~2.and about one-fivth of the total area of China.Within thenetwork,it falls mostly in the humid subtropical region with aboundant natural resour-ces.This is the most developing region with 40% of total national harvests and products.But the regional development in side the network is quiet uneven.The lower reachesare more developed than the middle and upper reaches;while the cities along theYangtze main course are more developed than the mountainous and hilly regions.The-refore,the even development of the whole Yangtze river network is very necessary.