南水北调中线水源区溪流大型底栖动物群落结构的时空动态  

Distribution Dynamics of Macroinvertebrates in the Source Water Areas of the South-water-to-north Project

作　　者：汪兴中[1,2] 蔡庆华[1] 李凤清[1,2] 段树桂[1,2] 

机构地区：[1]中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,武汉430072 [2]中国科学院研究生院,北京100049

出　　处：《应用与环境生物学报》2009年第6期803-807,共5页Chinese Journal of Applied and Environmental Biology

基　　金：国家"十一五"科技支撑子课题(No.2006BAC10B02);国家自然科学基金重点项目(No.30330140)资助~~

摘　　要：于2007年7月～2008年5月对南水北调中线水源区丹江口水库若干入库溪流的大型无脊椎动物的时空动态进行了研究.结果表明,四节蜉、扁蜉、细蜉、侧枝纹石蛾、直突摇蚊亚科一种和真凯氏摇蚊为该地区大型底栖动物优势类群,相对丰度分别为20.4%、11.5%、9.1%、5.9%、11.6%和5.0%;季节间底栖动物密度差异显著,生物量差异不显著,Shannon-Wiener多样性指数和Margalef多样性指数差异不显著.典型对应分析表明,季度间对底栖动物的影响因子不同是该地区底栖动物群落结构季节间差异不显著的主要原因.A field investigation was made from July 2007 to May 2008 to study the distribution dynamics of macroinvertbrates in several streams that flow to the Danjiangkou Reservoir. The results showed that Baetis spp.,Heptagenia spp.,Caenis spp.,Ceratopsyche spp,Parakiefferiella spp. and Eukiefferiella spp. were dominant groups in the study period,and their relative abundances were 20.4%,11.5%,9.1%,5.9%,11.6% and 5.0%,respectively. The difference in macroinvertbrates density was significant,but the differences in macroinvertbrate biomass, Shannon-Wiener index and Margalef index were not significant. Canonical correspondence analysis showed that the influence on the macroinvertbrates varied in different seasons. Fig 4, Tab 3, Ref23

关 键 词：丹江口水库 大型底栖无脊椎动物 群落结构 时空动态 南水北调 

分 类 号：Q958[生物学—动物学]