广东北江大型底栖动物群落与水质相关性研究  

Relationship between Macrobenthos and Water Quality in Beijiang River Basin

作　　者：曹然[1] 黎征武[1] 刘威 王旭涛 邓培雁[1] 

机构地区：[1]华南师范大学化学与环境学院,广州510006 [2]珠江流域水环境监测中心,广州510611

出　　处：《华南师范大学学报（自然科学版）》2017年第2期115-121,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省水利科技创新项目(2014-16)

摘　　要：运用典范对应分析(Canonical Correspondence Analysis,CCA)研究了12项水质指标对北江流域大型底栖动物分布的影响.结果表明,物种与水质因子的相关性在95%以上,说明大型底栖动物在北江的分布与水质因子有密切的联系.温度、pH、电导率、化学需氧量和硅酸盐是影响北江大型底栖动物物种分布的主导因子,氯化物、氨氮和总氮对其分布也有重要影响.本研究共采集大型底栖动物46种,各类底栖动物对于生态环境的需求不同,在各水质因子的维度上呈现出生态分化现象.根据大型底栖动物群落与水质因子的相关性,北江可以依次划分为:污染物含量低、水质较好的绥江中下游地区;水质受到有机污染的干流;水质一般、尚未受到污染影响的北江上游各一级支流.The relationship between macrobenthos and 12 water quality factors in Beijiang River Basin was studied by Canonical Correspondence Analysis （CCA）. The species-environment correlation was higher than 95%, which indi- cated the distribution of macrobenthos in Beijiang River Basin was strongly affected by water quality factors. Tempera- ture, pH, conductivity, COD and SiO3-Si were the five major factors affecting the macrobenthos＇ ecological distribu- tion. Cl-, NH4-N and TN were also influential on the distribution of the macrobenthos to some extent. A total of 46 macrobenthos species were collected during the research period. Different species adapted to different ecological envi- ronment, and every kind of species had strong correlations with distinctive water quality factors. According to the rela- tionships between maerobenthos and water quality factors, water quality of Beijiang River Basin can be divided into three groups：the first group included the midstream and downstream of Suijiang, in which the water quality is good and little pollutants can be found;the second group included the mainstream of Beijiang,in which the water had been contaminated by organic pollutants ;and the third group included other tributaries located in upstream of Beijiang, in which the water hadn＇t been affected significantly by pollutants.

关 键 词：大型底栖动物 水质 典范对应分析 北江 

分 类 号：X826[环境科学与工程—环境工程]