长江和各大支流总通航里程达7万多公里,是我国腹地东西交通的大动脉;日夜奔腾不息的江水滋润着占我国耕地总面积1/4的土地,为流域内占我国总人口1/3的居民和众多的城市提供了丰富的水源;河流中下游与星罗棋布的湖泊相通,水生动植物种类繁多,流域内淡水鱼的产量一直占全国总量的60%以上;上游水力资源充足。在我国众多的河流中长江是一条名副其实的“黄金水道”。随着生产的发展,近年来“黄金水道”也出现过或潜伏着不少的环境灾害,这些 The Yangtze River and the major tributaries of the total mileage of more than 70,000 kilometers, the hinterland traffic artery of our country; day and night the steady stream of water nourishing the total area of ​​arable land in China 1/4 of the basin for the total population of 1 / 3 residents and many cities provide a rich source of water; middle and lower reaches of the river connected with the lakes dotted with aquatic animals and plants of a wide range of freshwater fish production in the basin has accounted for more than 60% of the national total; adequate upstream hydraulic resources. Among the numerous rivers in our country, the Yangtze River is truly a “Golden Waterway.” With the development of production, in recent years, there have also been or been lurking many environmental disasters in “Golden Waterway”. These