四川黑龙滩水库渔业利用优化模式研究

STUDY ON COMPREHENSIVE FISHERY EXPLOITATION OF HEI LONG TANG RESERVOIR IN SICHUAN PROVINCE

报道了1991～1995年对面积为1693hm^2黑龙滩水库渔业利用优化模式研究的结果,主要内容有:水生生物种类组成和现存量调查、浮游植物初级生产力测定、渔获物统计和鱼产力估算;水体理化性状和水位变化对鱼产量和浮游生物群落结构的影响,网箱养殖鲤、草鱼的高产试验结果;多功能水库生态系统的渔业利用优化模式初步探讨。经三年努力,水库鱼产量由622t上升到1255.1t,平均单产750kg/hm^2。为了对水库的渔业功能有更深入的了解和合理的生态管理,总结提出了水库渔业功能与灌溉、防洪发电,大库鱼类增殖与网箱鱼类养殖、一般鱼类养殖与名优鱼类养殖、特别强调渔业发展必须兼顾环境的生态管理原则。

Experiments in Comprehensive fishery exploitation were conducted in Hei Long Tan Reservoir (1693hm2) from 1991 to 1995. The major results are as follows: determination of aquatic biological productivity and fishery resources and estimation of maximum potential fish production, effect of water physi-chemical properties and water level change on fish yield and plankton community structure, intensive culture of carp, grass carps and bream in net-cages. and discussion of the comprehensive fishery exploitation of large-scale reservoirs of multiple function. As a result, the total fish yield of the reservoir has increaced from 622000kg to 1255 000kg, and the average fish yield gone up to 750kg/hm^2.