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湖泊好似嵌在大地上的明珠,如果它与河流相通,也属于该河水系的一部分。在流域广阔的长江沿岸,星罗棋布地分布着众多湖泊,除长江源区有许多面积不大的咸水湖外,长江中下游是我国著名的淡水湖稠密区之一。江串湖,湖连河,江湖相依,好似瓜藤相接,这是长江与其他河流相比所具有的突出特点。通常所说的“五湖四海”中的五湖,即鄱阳湖、洞庭湖、太湖、洪泽湖和巢湖,都集中在长江中下游地区。长江湖泊水资源蓄积量约1000亿立方米,约占全国湖泊水资源蓄积量的一半。但由于盲目围垦、污水漫灌和泥沙淤积等影响,长江沿岸的众多湖泊正在不断地消失,大量水生生物也在灭绝的边缘徘徊,湖区百姓的生命、财产安全也受到严重威胁。
The lake is like a pearl embedded in the earth and is part of the river system if it is connected to the river. There are many lakes dotted around the vast Yangtze River basin. Except for a few lagoons in the Yangtze River source area, the middle and lower reaches of the Yangtze River is one of the densely populated freshwater lakes in China. Rivers and lakes, rivers and lakes, depending on rivers and lakes, like melon phase, which is the Yangtze River compared with other rivers have the salient features. Commonly referred to as the “five cornerstones” in the five lakes, namely, Poyang Lake, Dongting Lake, Taihu Lake, Hongze Lake and Chaohu, are concentrated in the middle and lower reaches of the Yangtze River. The amount of water resources in the Yangtze River is about 100 billion cubic meters, accounting for about half of the national lake water reserves. However, due to blind reclamation, flood irrigation and sedimentation, many lakes along the Yangtze River are disappearing constantly. Large numbers of aquatic organisms are also hovering at the verge of extinction. Their lives and property safety are also seriously threatened.