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为了解浙江仙居永安溪大型底栖动物群落结构,于2016年8月对永安溪13个采样站点进行调查研究,并应用多种生物指数对溪流水质进行生物评价。此次调查共获得底栖动物95种,隶属于4门7纲,其中扁形动物1种,环节动物7种,软体动物8种,节肢动物79种。永安溪大型底栖动物平均密度为3 020.8 ind./m2,平均生物量为34.25 g/m2;密度优势类群为节肢动物,其平均密度为2 661.1 ind./m2,贡献率为88.1%,生物量优势类群为软体动物,其平均生物量为30.76 g/m2,贡献率为89.8%。永安溪大型底栖动物优势种为长河螺Rivularia elongata、角形环棱螺Bellamya angularis、纹石蛾属一种Potamyia sp.、闪蚬Corbicula nitens和小蜉属一种Ephemerella sp.。利用6种生物指数对永安溪水质进行评价显示,Margalef多样性指数、Simpson多样性指数、Pielou均匀度指数和BI生物指数均表明永安溪处于清洁状态;仅Shannon-Wiener指数评价显示为轻污染状态,BPI生物学污染指数评价为β-中污染状态。
Abstract：In order to study the community structure of macrobenthos in Yong'an Stream, Zhejiang Province, we investigated the 13 sampling sites at Yong'an Stream in August 2016, and evaluated the quality of stream water by a variety of biological indices. A total of 95 species of macrobenthos were collected, belonging to 4 phylums and7 classes. There were 1 species of platyhelminth, 7 species of annelida, 8 species of mollusca and 79 species of arthropoda. The average density and biomass of macrobenthos in Yongan Stream were 3 020.8 ind./m2 and 34.25 g/m2,respectively. The dominant density group was arthropoda with the average density of 2 661.1 ind./m2, which contributed 88.09% to the total density; the dominant biomass group was mollusca with the average biomass of30.76 g/m2, which contributed 89.80% to the total biomass. The dominant macrobenthos species were Rivularia elongata, Bellamya angularis, Potamyia sp., Corbicula nitens and Ephemerella sp. in Yong'an Stream. Water quality of Yongan Stream was evaluated by 6 biotic indexes, of which the results showed that Margalef diversity index,Simpson diversity index, Pielou evenness index, and biotic index all indicated that Yong'an Stream was clear. Only Shannon-Wiener index showed Yong'an Stream was slightly polluted, and Biology Pollution Index(BPI) showed it was in β-meso-pollution state.
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基本信息:
DOI：10.13417/j.gab.036.002849
中图分类号:Q958.8;X826
引用信息:
[1]冯立辉,顾婧婧,齐鑫,等.浙江永安溪大型底栖动物群落结构及水质生物学评价[J].基因组学与应用生物学,2017,36(07):2849-2861.DOI:10.13417/j.gab.036.002849.
基金信息:
国家自然科学基金(31301908);; 浙江省自然科学基金(LY17C040001)共同资助
2017-07-25
2017-07-25