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学科主题: Environmental Sciences
题名: Using epilithic diatom communities to assess ecological condition of Xiangxi River system
作者: Tang, T ; Cai, QH ; Liu, JK
通讯作者: Tang, T, Chinese Acad Sci, State Key Lab Freshwater Ecol, Wuhan 430072, Peoples R China
关键词: ecological condition ; epilithic algae ; river diatom index ; Xiangxi River
刊名: ENVIRONMENTAL MONITORING AND ASSESSMENT
发表日期: 2006
卷: 112, 期:1-3, 页:347-361
收录类别: SCI
部门归属: Chinese Acad Sci, State Key Lab Freshwater Ecol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Biotechnol Inst Hydrobiol, Wuhan 430072, Peoples R China
摘要: Assessment method for ecological condition of Xiangxi River system was studied by using 13 candidate metrics of epilithic diatom which can reflect conditions in pH, salinity, nitrogen uptake metabolism, oxygen requirements, saprobity, trophic state, morphological character and pollution tolerant capability etc. By one-way ANOVA, the metrics of relative abundance of acidobiontic algae (ACID), freshwater algae (FRESH), high oxygen requirement (HIGH-O), eutraphentic state (EUTRA) and mobile taxa ( MOBILE) were suitable for distinguishing sites in different conditions. Then, the river diatom index (RDI) composed of these five metrics was used to evaluate ecological condition of the river. The results showed that the healthiest sites were in the Guanmenshan Natural Reserve ( with the mean RDI of 79.73). The sites located in tributary of Jiuchong River also owned excellent state (mean RDI of 78.25). Mean RDI of another tributary - Gufu River and the main river were 70.85 and 68.45 respectively, and the unhealthiest tributary was Gaolan River (with mean RDI of 65.64). The mean RDI for all the 51 sites was 71.40. The competence of RDI was discussed with comparison of evaluation results of DAIpo and TDI, it can be concluded that multimetrics is more competent in assessment task.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9052
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Tang, T; Cai, QH; Liu, JK.Using epilithic diatom communities to assess ecological condition of Xiangxi River system,ENVIRONMENTAL MONITORING AND ASSESSMENT,2006,112(1-3):347-361
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