关键词：
松花江哈尔滨段;底栖动物;群落结构;水质评价
摘 要：
2008年春季,对松花江哈尔滨市段底栖动物进行了较系统的调查研究。结果表明:松花江哈尔滨市段底栖动物共51种,其中水生昆虫34种,占总种数的66%;软体动物10种,占20%;环节动物6种,占12%;甲壳动物1种,占2%。密度和生物量在各采样断面有较大差异,密度的变化范围为48～6248ind./m2,平均值2014ind./m2;生物量的变化范围为0.32～1546g/m2,平均值347.82g/m2。聚类分析(Cluster Analysis)表明,松花江哈尔滨市段底栖动物群落结构差异明显,组内相似性高,组间差异大,多维标度分析(MSD)结果支持了聚类分析结果。同时,利用Shannon-Wiener多样性指数、Margalef丰富度指数等5个指数对松花江哈尔滨市段水质进行综合评价,评价结果表明松花江哈尔滨市段水质处于中度污染状态。
译 名：
Study on zoobenthos community structure and water quality assessment in Songhua River along Harbin city
作 者：
ZHANG Jing,YU Hong-xian(Hydrobiology,Wildlife Resources Institute,Northeast Forestry University,Harbin 150040,China)
关键词：
Songhua River along Harbin city;zoobenthos;community structure;water quality assessment
摘 要：
In summer 2008,an investigation on the zoobenthos community structure was conducted in Songhua River along Harbin city.The results showed that a total of 51 species of zoobenthos were found,of which consisted 34 aquatic insect larva(66%),ten mollusks(20%) six annelid(12%) and one crustacean(2%).Density and biomass in all sampling sites were quite different.Density varied in the scope of 48～6248 ind./m2 with an average of 2014 ind./m2,and biomass changed in the scope of 0.32～1546g/m2,with an average of 347.82 g/m2.The hierarchical cluster analysis revealed that zoobenthos community structure was similar within groups but distinct greatly between groups,which was confirmed by another method of nor-matric multidimentional scaling(MDS).A comprehensive evaluation was conducted using five indicies such as Shannon-Wiener and Margalef,Simposon diversity index and so on the results revealed that water quality of Songhua River along Harbin city was in a medium pollution state.
