%0 Journal Article
%T Macrobenthos in Jinping reach of Yalongjiang River and its main tributaries<br>雅砻江(锦屏段)及其主要支流的大型底栖动物
%A QU Xiao-dong
%A CAO Ming
%A SHAO Mei-ling
%A LI Dao-feng
%A CAI Qing-hua
%A <br>渠晓东
%A 曹明
%A 邵美玲
%A 黎道丰
%A 蔡庆华
%J 应用生态学报
%D 2007
%I 
%X In this paper,an investigation was made on the macrobenthos at 25 sites in the Jinping reach of Yalongjiang River and its main tributaries in May and November 2004,aimed to study the relationships between macrobenthos distribution and environmental factors.The results showed that the dominant species of macrobenthos was Baetis sp.(Baetidae,Ephemeroptera),with a relative abundance being 14.9% and 27.0% in May and November,respectively.Based on the species composition and their relative abundance,and by using two-way indictor species analysis(TWINSPAN)and detrended correspondence analysis(DCA),the macrobenthods was divided into four groups,according to the habitat types of the sites.Canonical correspondence analysis(CCA)on the relationships between macrobenthods community structure and environmental factors indicated that in May,elevation and water hardness and NH_4 -N content were the main environmental factors affecting macrobenthods distribution,while in November,elevation,water hardness,NH_4 -N and SiO_2 contents were the main ones.
%K Yalongjiang River
%K macrobenthos
%K TWINSPAN
%K DCA
%K CCA<br>雅砻江
%K 大型底栖动物
%K 双向指示种分析
%K 无偏对应分析
%K 典范对应分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=843AE3FF50795732&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=4C100B7696CE9E24&eid=F1177A9DF1349B63&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=8&reference_num=27