The diversity of benthic invertebrates in the Jinping Hydroelectric Station of Yalong river and those areas by which influenced was investigated from April to May and September to October in 2002.

The diversity of benthic invertebrates in the Jiuzhaigou Nature Preserve was investigated from May and July to August in 2002 and July in2003.

Based on surveys of invertebrate communities on an ariificial turf by the sweep net and quadratsampling methods, we divided the species in the invertebrate community into three functional groups ac-cording to their trophic level.

Appraisal on water quality by macroinvertebrate community and Hg of bottom-mud in the Nanming River;

Study on macroinvertebrate community and water quality from Sanjiangkou to Shuikousi along the Nanming River;

Spatial distribution of macroinvertebrates in Xiangxi River;

The 95~(th) percentile(or 5~(th) percentile) data of benthic macroinvertebrate index value of all sampling sites were used to standardize the index value,simple addition method was used to calculate synthesized index value,and the 25~(th) percentile of index value of reference site was used to divide the rating of ecological health and assess the ecological health of a.

Effects of heat shock on macroinvertebrates in Xiangjiang River;