黑龙江干流水电梯级开发对鱼类资源的影响与补救措施

CONSTRUCTION OF STEP HYDROPOWER STATION EFFECTS ON FISHERY RESOURCES IN THE MAINSTREAM OF HEILONGJIANG AND THE REMEDY MEASURES

分析了黑龙江干流水电梯级开发对鱼类资源的影响．结果表明．梯级水利枢纽建成后．对鲤、鲫、鲇等定居型鱼类的影响利弊兼有．作用不明显；对以鲢、草鱼为代表的半洄游型鱼类产生的不利影响较大；对鲟、鳇、大麻哈等特产鱼类的不利影响较明显。针对这些不利影响．提出了相应的补救对策。

According to the investigations on commercial fishes resources in the middle and upper reaches of Heilongjiang River in recent years. the paper presented here reports the composition of fish fauna in the study area, the state of fishes resources in water area outside the step hydropower station and at the river section under the dam. and propagation state of the fishes in reproducing drifting eggs. The paper also forecasts the effect of the reservoir on the middle and upper reaches of Heilongjiang River fishes resources and put forward countermeasures to develop the fisheries.