天鹅洲鱼类种质资源库环境质量评价

EVALUATION OF ENVIRONMENTAL QUALITY OF FRESHWATER FISH GERMPLASM RESOURCES POOL IN TIANEZHOU

本文主要进行了天鹅洲水域生态学方面的研究。通过对天鹅洲水域理化、生物因子的监测，较为全面地反映了天鹅洲水域的环境质量现状。多数指标符合地面水一级标准，水中营养盐较丰富，有毒重金属含量较低，基本上属寡污性水体，但已开始向β－中污带过渡；生物群落组成较为复杂，已具一定的调节功能，是比较理想的渔业养殖水体。本文还探讨了群落生物量与时间的动态变化规律以及水体净生产能力。

This paper mainly dealt with the ecology of Tianezhou water We did a comprehensive evaluation of the condition of environmental quality in Tianezhou by assaying and monitoring physical, chemical, and biotic factors of Tianezhou Water: most indicators are within the range of first criteria on surface water There are abundant trophical salts and less toxic heavy metals Therefore, it is an ideal place for cultivating fishes The water of Tianezhou basically belongs to the slight pollution zone waters, but transits to the β-mild pollution zone waters The complicated bio-community has some adjustable functions The article also disussed the dynamic rule of change between biomass and time, and the primary productivity of water It provided scientific evidences of ecological environment for selection of pool sites of freshwater fish germplasm resources