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Spatio-Temporal Trends and Identification of Correlated Variables with Water Quality for Drinking-Water Reservoirs

文献类型： 外文期刊

作者： Gu, Qing 1 ; Wang, Ke 2 ; Li, Jiadan 3 ; Ma, Ligang 4 ; Deng, Jinsong 2 ; Zheng, Kefeng 1 ; Zhang, Xiaobin 1 ; Sheng, Li 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Digital Agr, Hangzhou 310021, Zhejiang, Peoples R China

2.Zhejiang Univ, Inst Remote Sensing & Informat Syst Applicat, Hangzhou 310058, Zhejiang, Peoples R China

3.Ningbo Acad Agr Sci, Inst Rural Dev & Informat, Ningbo 315040, Zhejiang, Peoples R China

4.Xinjiang Univ, Coll Resource & Environm Sci, Urumqi 830046, Peoples R China

5.Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA

6.Univ Oklahoma, Sch Meteorol, Norman, OK 73019 USA

关键词： water quality;reservoir;spatial distribution;temporal variation;cluster analysis

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：3.39； 五年影响因子：3.789 ）

ISSN： 1660-4601

年卷期： 2015 年 12 卷 10 期

页码：

收录情况： SCI

摘要： It is widely accepted that characterizing the spatio-temporal trends of water quality parameters and identifying correlated variables with water quality are indispensable for the management and protection of water resources. In this study, cluster analysis was used to classify 56 typical drinking water reservoirs in Zhejiang Province into three groups representing different water quality levels, using data of four water quality parameters for the period 2006-2010. Then, the spatio-temporal trends in water quality were analyzed, assisted by geographic information systems (GIS) technology and statistical analysis. The results indicated that the water quality showed a trend of degradation from southwest to northeast, and the overall water quality level was exacerbated during the study period. Correlation analysis was used to evaluate the relationships between water quality parameters and ten independent variables grouped into four categories (land use, socio-economic factors, geographical features, and reservoir attributes). According to the correlation coefficients, land use and socio-economic indicators were identified as the most significant factors related to reservoir water quality. The results offer insights into the spatio-temporal variations of water quality parameters and factors impacting the water quality of drinking water reservoirs in Zhejiang Province, and they could assist managers in making effective strategies to better protect water resources.

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