阿什河底栖动物群落特征及影响因子

Characteristics and Impact Factors of Macroinvertebrate Community in the Ashi River

阿什河作为松花江的一级支流,全境包含了从Ⅰ类到劣Ⅴ类的各种类型水质。通过对阿什河沿线底栖动物群落构成进行调查,结合典范对应性分析(CCA)对底栖动物群落与环境因子进行相关性分析得出结论,溶解氧和高锰酸盐指数为研究区域内底栖动物群落构成的主要限制因子。为分析不同水质条件下底栖动物种群变化成因和从生物学角度提出阿什河治理方法提供技术依据。

As a primary tributary of the Songhua River,Ashi River contains various types of water quality of "Class Ⅰ-worse Ⅴ". Through the investigation of the composition of macroinvertebrate communities along the Ashi River,and the analysis on the correlation between macroinvertebrate communities and environmental factors combined with Canonical Correspondence Analysis (CCA),it can be concluded that dissolved oxygen and permanganate index are the main limiting factors for the composition of macroinvertebrate communities in the study region.It might provide a technical basis for analyzing the causes of macroinvertebrate population changes under different water quality conditions and proposing treatment method for the Ashi River from the perspective of biology.