广阔的水域,适宜的物理、营养盐及水生生物条件,为三峡水库发展生态渔业提供了良好的自然条件。物理基础水位。三峡水库属河道型水库。在175米水位时,水库干流总长度约663千米,平均宽度约1.1千米(较原有河道宽度增加不到1倍),平均水深约70米,水面总面积约1 084平方千米,总库容约393亿立方米(占长江入海量约4%)。一般情况下,三峡水库每年1~5月在综 The vast water area, suitable physical, nutrient and aquatic biological conditions provide favorable natural conditions for the development of ecological fisheries in the Three Gorges Reservoir. Physical basis of water level. Three Gorges reservoir is a river reservoir. At a water level of 175 meters, the total length of the main stream of the reservoir is about 663 kilometers with an average width of about 1.1 kilometers (less than 1 times the width of the original river channel), an average water depth of about 70 meters and a total surface area of ​​about 1,084 square kilometers. The total storage capacity of about 39.3 billion cubic meters (accounting for about 4% of the Yangtze River into the sea). Under normal circumstances, the Three Gorges reservoir from January to May in comprehensive