Environmental heterogeneity analysis, assessment of trophic state and source identification in Chaohu Lake, China
Environmental heterogeneity analysis, assessment of trophic state and source identification in Chaohu Lake, China
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DOI：
10.1007/s11356-011-0490-8
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发表时间：
2011-03
影响因子：
5.8
通讯作者：
Huibin Yu;B. Xi;Jinyuan Jiang;M. Heaphy;Hailong Wang;Dinglong Li
中科院分区：
文献类型：
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作者：
Huibin Yu;B. Xi;Jinyuan Jiang;M. Heaphy;Hailong Wang;Dinglong Li
采用环境异质性分析方法，对2004 - 2006年巢湖12个站位的11个营养状态参数进行了分析。本研究的目的是确定水质的空间/时间变化，以评估营养状态，并确定污染源。讨论层次聚类分析（CA）将12个采样点分为两类（巢湖东部和巢湖西部）。时间CA将12个月划分为四个时期（3 - 5月; 6 - 8月; 9 - 11月; 1月、2月和12月），巢湖东部具有明显的规则季节循环;巢湖西部具有四个时期（1 - 4月和12月; 5月、7月和11月; 6月、9月和10月; 8月），具有不规则的季节循环。营养状态指数分析表明，巢湖东部处于中营养状态，而巢湖西部处于富营养和过富营养状态。根据污染物源统计数据，确定了东巢湖的主要污染源为生活污水和面源污染。巢湖西部水体富营养化主要由生活污水、工业污染和非点源污染共同贡献。
IntroductionEnvironmental heterogeneous methods were used for analysing data sets of trophic state with 11 parameters measured at 12 different sites at Chaohu Lake for the period 2004 to 2006. The aim of this research was to determine spatial/temporal variations in water quality, to assess trophic state and to identify pollution sources. Protective measures and schemes were proposed to improve water quality in the lake.DiscussionHierarchical cluster analysis (CA) grouped the 12 sampling sites into two clusters (Eastern Chaohu Lake and Western Chaohu Lake). Temporal CA classified the 12 months into four periods (March–May; June–August; September–November; January, February and December) with a distinct regular seasonal cycle in Eastern Chaohu Lake and four periods (January–April and December; May, July and November; June, September and October; August) with an irregular seasonal cycle in Western Chaohu Lake. Trophic state index analysis showed that Eastern Chaohu Lake was in mesotrophic levels, while Western Chaohu Lake was in eutrophic and hypereutrophic levels. Based on pollutant source statistics data, the dominant pollution sources were identified as domestic sewage and non-point pollution in Eastern Chaohu Lake. Domestic sewage, industrial and non-point sources were contributed to eutrophication in Western Chaohu Lake.