生态学杂志2013，Vol.32Issue(8)：2070-2076,7.
香溪河流域梯级水库大型底栖动物群落变化及其与环境的关系
Changes of macrobenthos community and their relationships with environmental factors along cascading reservoirs of Xiangxi River Basin, China
摘要
Abstract
An investigation was made on the macrobenthos communities in three cascading reservoirs in Xiangxi River Basin in October,2005 and 2011,respectively,aimed to explore the changes of the macrobenthos communities and their relationships with the environment.As compared with that in 2005,the macrobenthos community in the three reservoirs in 2011 changed to some extent.In Gudongkou Reservoir I,Oligochaeta was still dominant,and the total macrobenthos density increased.In Gudongkou Reservoir Ⅱ,the dominance degree of Chironomidae descended,while the total macrobenthos density ascended.Meanwhile,the relative abundance of Procladius sp.declined dramatically from 94.5％ to 35.5％,while that of Limnodrilus hoffmeisteri increased to 36％.The macrobenthos community in Xiangxi Bay had great change.Since Chironomidae replaced Tubificidae as the absolutely preponderant species,the relative abundance of Chironomidae reached 89％,but the total macrobenthos density decreased.These changes were attributed to the drastic water level fluctuation of the Three-Gorges Reservoir.The canonical correspondence analysis (CCA) on the relationships between the macrobenthos community and environmental factors in the three reservoirs showed that Procladius sp.preferred the waters with higher turbidity,while Limnodrilus hoffmeisteri and Tubifex tubifex preferred the waters with higher water column stability and lower bottom water temperature.关键词
香溪河库湾/水位波动/三峡水库/群落排序Key words
Xiangxi Bay/ water level fluctuation/ the Three-Gorges Reservoir/ community ordination分类
资源环境引用本文复制引用
李斌,申恒伦,张敏,蔡庆华,邵美玲..香溪河流域梯级水库大型底栖动物群落变化及其与环境的关系[J].生态学杂志,2013,32(8):2070-2076,7.基金项目
国家科技重大专项(2012ZX07104-002)资助. （2012ZX07104-002）
