Changes of fishery resources after the construction of Guangzhao hydropower stations on Beipan River
北盘江光照水电站建设前后鱼类资源变化

Combined with the result analysis to the previous investigation implemented during both the period of establishment of Baipanjian river photo hydroelectric power plant and the period before the establishment ,and based on the relevant documents, the onsite investigation on impact of Baipanjian hydroelectric power plant on river fish source is decided to directed to subjects of river fishes of totally 17 different kinds, including rare and endangered fishes of 4 kinds ,of pearl river special fishes of 3 kinds and newly recorded fishes of 18 kinds. The impact of the establishment of photo hydroelectric power plant on the river fish source is remarkable. Small fishes of liking quietness and slow water flowing environment and fishes of conventional breeding gradually become advantaged kinds and fishes of liking quick water flowing decrease remarkably or retreat from the dam river area. In the investigated area there has no typical breeding environment suitable to domestic fishes and other fishes and, the impact on the breeding sites for previously recorded fishes of adhesiveness eggs is small. The fish raising productivity effect needs further investigation.