the present paper embodies two studies: faunal analysis of aquatic oligochaeta in zhongshan, south china, and environment gradient analyses of zoobenthos in 13 yangtze shallow lakes.
the concept and main groups of zoobenthos was summarized , and studies of assessment and monitoring of water quality by using benthic animal in china were reviewed.
the diversity of plankton and zoobenthos was lower, while the fishery resources were relatively abundant.
浮游生物和底栖动物多样性较低,渔业资源相对丰富;
the relation between environmental conditions of reservoirs and species composition, distribution characteristics as well as population fluctuation of zoobenthos was investigated.