大川河鱼类区系及其群落生态结构的研究

Studies on Ecological Structure of Fish Fauna in the Dachuan River.

鱼类区系及其群落生态结构,在理论和实践上都有十分重要的意义。但是,关于鱼类区系的生态结构问题,还未见详细报道。本文通过对大川河鱼类区系及其群落生态结构的分析,探讨鱼类区系及其群落生态结构的规律。

Ecological structure of fish fauna in the Dachuan river at Lushan county of Sichuan province was studied with the method of ecological overlap coefficient. The studies are from three aspects, i.e., spatia structure, food structure and breeding structure. Both overlap and separation are found in the ecological structure of fish fauna. The ecological pressure resulted from serious overlap in one ecological aspect may be lightened by the ecological separation in other aspects. The result has significant meaning for the theory and practice of fish bleeding.