长江上游珍稀特有鱼类保护区鱼类生境特征初步研究

A preliminary study on fish habitat characteristics in the National Nature Reserve for the rare and endemic fishes in the upper reaches of the Yangtze River

长江上游珍稀特有鱼类保护区是我国最长的河流型自然保护区,保护了多种珍稀特有鱼类,具有重大的生物多样性保护价值。随着金沙江梯级开发的实施,长江上游保护区鱼类栖息条件将受到不同程度的影响。本研究基于长江上游珍稀特有鱼类保护区的地形、地貌、水文、水动力等条件,提出了保护区鱼类生境特征表征指标体系,并根据该指标体系初步分析了保护区栖息地生境特征。研究结果可为长江上游珍稀特有鱼类保护区鱼类资源保护措施的制定提供参考依据。

The National Nature Reserve for the rare and endemic fishes in the upper reaches of the Yangtze river is the longest river nature reserve in China. It is of important values on biodiversity conservation,and protects many rare and endemic fishes. With the implementation of the Jinshajiang cascade development,the fish habitat conditions in the reserve will be changed seriously. Based on the topography,geomorphology,hydrology and hydrodynamics of the fish nature reserve,this study proposed an index system to show the characteristics of the fish habitat. The of can be used for the decision-making regarding the protection of fishery resources.