澜沧江中上游鱼类生物多样性现状初报  

THE PRELIMINARY INVESTIGATION OF FISH BIODIVERSITY INMIDDLE AND UPPER REACHE OF LANCANGJIANG RIVER

作　　者：何舜平[1] 王伟[1] 陈银瑞[2] 李再云[2] 杨君兴[2] 

机构地区：[1]中国科学院水生生物研究所,武汉430072 [2]中国科学院昆明动物研究所,昆明650233

出　　处：《云南地理环境研究》1999年第1期26-29,共4页Yunnan Geographic Environment Research

基　　金：中国科学院资源与生态环境研究重大项目

摘　　要：对澜沧江上游及支流的鱼类和环境调查显示流域片段化对鱼类生物多样性产生了较大的影响。从漾濞江和西洱河的比较可以看出，前者因为没有梯级电站，鱼类的种类和数量并无太大的变化，而西洱河由于过度的梯级开发和污染，鱼类濒于灭绝，洱海由于江湖的隔绝，外来种的引入使得土著鱼类种群数量急剧减少。干流上大坝（漫湾水电站）的修建使得流水变为静水环境而产生一系列的变化使鱼类的种类和种群数量产生变化。The investigation of fishes and its habitant in middle and upper reaches of Lancangiang River indicates that river fragmentation has a great impact to fishes biodiversity The comparison of Xi' er River and Yangbi River indicated that the former,because of no hydroelectric dams built,has a well conservation of fishes,but the later,due to exclusive exploitation of hydroelectric resource(building 6 dams in less than 10 km),lost most of its fishes species The Lake Erhai,due to separate with rivers and introduced fishes species,have lost most of its endemic and native species The dam on the main stream made the running water to be still water,and this will cause a series change in environment All this change may cause the variation of population and the nubmers of species

关 键 词：澜沧江 鱼类 生物多样性 流域片段化 种群 

分 类 号：Q959.409[生物学—动物学]