| 洱海流域水质时空变化特征 |
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| 引用本文： | 任泽,杨顺益,汪兴中,唐涛,蔡庆华.洱海流域水质时空变化特征[J].生态与农村环境学报,2011,27(4). |
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| 作者姓名： | 任泽 杨顺益 汪兴中 唐涛 蔡庆华 |
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| 作者单位： | 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,湖北武汉430072;中国科学院研究生院,北京100049
2. 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,湖北武汉430072 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07526-002-07) |
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| 摘 要： | 依据2009年洱海流域62个样点的水质调查数据,应用聚类分析对洱海流域水质时空变化特征进行分析,将样点在空间上分为4组,分别为无干扰的苍山林区源头溪流(A1)、受到一定程度人类干扰的流经农业区和城镇区溪流的中上游段及湖泊(A2)、干扰较严重的流经农业区和城镇区溪流的下游段(A3)以及干扰最为严重的洱海岸边带(A4),判别分析结果表明聚类准确率达95.2%。应用主成分分析方法得到影响洱海流域水质的4个主成分为:第1主成分,Alk、Ca2+、Mg2+、HS;第2主成分,TP;第3主成分,TN和NO3--N;第4主成分,DOC和TOC,这些主成分空间差异明显。在时间尺度上,Alk表现为丰水期高于枯水期;Ca2+表现为枯水期高于丰水期;TP没有表现出明显的季节性变化规律;TN在A1和A3组表现为丰水期高于枯水期。
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| 关 键 词： | 洱海流域 水质时空变化 主成分分析 聚类分析 判别分析 |
Spatial and Temporal Variation of Water Quality of Erhai Basin |
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| REN Ze,YANG Shun-yi,WANG Xing-zhong,TANG Tao,CAI Qing-hua.Spatial and Temporal Variation of Water Quality of Erhai Basin[J].Journal of Ecology and Rural Environment,2011,27(4). |
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| Authors: | REN Ze YANG Shun-yi WANG Xing-zhong TANG Tao CAI Qing-hua |
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| Institution: | REN Ze1,2,YANG Shun-yi1,WANG Xing-zhong1,TANG Tao1,CAI Qing-hua1(1.State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China,2.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Based on the water quality survey of the Erhai basin in 2009,covering 62 sampling points,cluster analysis was done of the data for characterization of the spatial and temporal variation of water quality of the Erhai basin.Spatially,the sampling points were divided into 4 groups,that are,Group A1,source streams in the interference-free Cangshan forest;Group A2,upper and middle reaches of the streams and lakes in the farming areas and towns that are subjected to some extent of human interference;Group A3,lowe... |
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| Keywords: | Erhai basin spatial and temporal variations of water quality principal component analysis cluster analysis discriminatory analysis |
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