基于水质安全的饮用水源水库渔业生产潜力评估——以辽宁省汤河水库为例

本文利用初级生产力和饵料基础2种方法对汤河水库鱼产力进行了评估,结果表明:初级生产力评估汤河水库鲢、鳙鱼产力达522.460t;饵料基础法评估鱼产力为595.960t。平均鱼产力可达约559.000t,比汤河水库实际产量要高,说明水库的鱼产力还有较大的上升空间。另外,通过与以往材料的对比发现,汤河水库浮游生物的生物量有明显的增加,说明汤河水库水体营养水平有升高趋势,水库水质状况需加以注意。对汤河水库鱼产力进行正确评估,科学指导渔业生产,对实现"保水渔业"意义重大。

Evaluation of Fish Productivity of Water Source Reservoirs Based on the Security of Water Quality Tanghe Reservoir in Liaoning Province

Primary productivity and food elements were used to evaluation the fish productivity of Tanghe reservoir. Fish productivity of Tanghe reservoir was 522.460 t by using primary productivity which only including the chub and bighead carp and was 595.960 t by using food elements. The calculated annual average of fish productivity was 559.000 t in Tanghe reservoir, that was higher than actual yield, which shown the potential increment of fish productivity. In addition, the biomass of plankton was significantly i...