洋河水库富营养化及其渔业利用

Eutrophication and Fishery Benefit of Yanghe River Reservoir

针对洋河水库水质营养水平的发展和渔获量下降显著的情况 ,分析了水库富营养化和渔业利用的相互关系 ,指出渔获量下降加剧了水库富营养化。在渔业潜力被充分利用后 ,渔业携出的总磷占总磷出库总量的比重将由目前的 10 %提高到 30 %。还就水库富营养化作为一种潜力资源 ,提出了以渔业利用为中心的生态治理对策 ,以期在提高渔获量、创造经济效益的同时 ,有效缓解水库富营养化 。

To solve the rapid spreading of eutrophication and the rapid decline of fishery harvesting in Yanghe Reservoir, the mutual effect between the eutrophication and the fishery harvest was studied. It is concluded that the latter (declined harvest) itself contributes to the forward and deteriorates the ecological environment of the reservoir. At present, 10% of the TP discharge of the reservoir is utilized by fishery, and it should be increased to 30% if the fishery potential is fully tapped. In order to control the eutrophication and improve the water quality supplied to the city as well as to raise the fishery harvesting and to create economic value, the eutrophication is considered a potential resource and an ecology harness measure based on the fishery utilization is provided.