文献类型：期刊文献

英文题名：Spatio-Temporal Variation and Controlling Factors of Water Quality in Yongding River Replenished by Reclaimed Water in Beijing, North China

作者：Yu, Yilei[1,2] Ma, Muyuan[1,2] Zheng, Fandong[3] Liu, Licai[3] Zhao, Nana[1,2] Li, Xiaoxia[1,2] Yang, Yongmin[4] Guo, Jia[1,2]

第一作者：Yu, Yilei;于一雷

通信作者：Guo, J[1];Guo, J[2];Zheng, FD[3]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China;[3]Beijing Water Sci & Technol Inst, Beijing 100048, Peoples R China;[4]China Inst Water Resources & Hydropower Res, Minist Water Resources, Res Ctr Flood & Drought Disaster Reduct, Beijing 100038, Peoples R China

年份：2017

卷号：9

期号：7

外文期刊名：WATER

收录：;EI(收录号：20172703894069);Scopus(收录号：2-s2.0-85021626654);WOS:【SCI-EXPANDED(收录号:WOS:000406681700004)】；

基金：This research was financially supported by the National Natural Science Foundation of China (NO. 41601037). We wish to thank the three anonymous reviewers for their invaluable comments and constructive suggestions used to improve the quality of the manuscript.

语种：英文

外文关键词：water quality; reclaimed water; controlling factors; Yongding River

摘要：Reclaimed water is useful for replenishing dried up rivers in North China, although changes in water quality could be an issue. Therefore, it is essential to understand the spatio-temporal variation and the controlling factors of water quality. Samples of Yongding River water were collected seasonally, and 24 water quality parameters were analyzed in 2015. All waters were alkaline, and nitrate-nitrogen was the main form of nitrogen, while phosphorus was mostly below detection level. The water quality parameters varied in time and space. Cluster analysis showed a distinct difference between winter and the other seasons and between the natural river section and the section with reclaimed water. Based on the analysis of Gibbs plots, principal component analysis, and ionic relationships, the water chemistry was controlled by dissolution of rocks in natural river section, the quality of replenished water, the effects of dilution, and the reaction of aqueous chemistry in the reclaimed water section. The positive oxidation environment in most of the river water was conducive to the formation of nitrate-nitrogen by nitrification, and not conducive to denitrification.