【摘要】 1983年5月～1984年1月,用彼得生采泥器,结合虎红染色分选法,对运河杭州段干流及一支流进行了4次调查,共发现底栖动物34种。干流中只有16种,其中南面4个断面底栖动物绝迹;支流中则有31种。各采样点底栖动物在个体数量上均以颤蚓科居绝对优势,其中3种尤为突出。对一些种类的耐污性作了分析。底栖动物Shannon指数与BOD₅等水化参数关系密切,据此对该河段的水质作了评价。更多还原

【Abstract】 Investigations of the zoobenthos in Grand Canal （Hangzhou Section） were carried out four timesin May 1983～Jan. 1984, Samples were collected with a petersen grab and were sorted with theaid of rose bengal stain. Altogether 34 species were found in the （?） There were only 16species in the main stream, while 31 in a tributory, Tubificids were a（?）solutely predominant at everysampling station where zoobenthos existed, generally with. Aulodrillus pluriseta. Limnodrillushoffmeisteri and A. profecatus particularly numerous. In the main stream, there was a completeabsence of zoobenthos at the upper （south） four transects. The Shannon index was found to besignificantly correlated with BOD₅ etc. and was used to evaluate the water quality at all thestations surveyed.更多还原