气候变化领域集成服务门户(CCPortal): Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

CCPortal

DOI	10.3390/w16010045
	Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China
	Zhu, Yuchen; Yang, Hongjie; Xiao, Yong; Hao, Qichen; Li, Yasong; Liu, Jiahuan; Wang, Liwei; Zhang, Yuqing; Hu, Wenxu; Wang, Jie
发表日期	2024
EISSN	2073-4441
起始页码	16
结束页码	1
卷号	16 期号:1
英文摘要	Rivers are an important source of water in humid regions, but their availability is greatly limited by water chemistry. In order to accurately identify the changes in river water chemical composition, the compositional analysis method (CoDA) is proposed from the perspective of compositional data analysis theory, which considers the geochemical riverine system as a whole and detects the compositional changes of the entire watershed. The basic data analysis is carried out by traditional analysis methods, and the results show that the hydrochemical characteristics of different sections of the basin have significant features. The water chemistry of Dongxi River is of the HCO3- Ca type. The water of the Xixi River shows a gradual evolution from the HCO3-Ca type and high SO42- content in the upper reaches to the Cl-Ca type in the lower reaches. The hydrochemistry of river water in the watershed is mainly affected by rock weathering leaching (PC1) and agricultural and domestic pollutant discharge (PC2), with a contribution rate of 48.4% and 19.7%, respectively. Rock weathering, mining, and agricultural pollution are the main factors affecting the chemical composition of river water in different regions. The spatial composition of a single sample at different scales is monitored by the Mahalanobis distance approach in an iterative manner to minimize the influence of a single anomaly on the composition center. The results show that the main reasons for the change in river water chemical composition along the Xixi River are attributed to mine pollution, domestic pollution, and tea plantation and that along the Dongxi River is caused by domestic pollution. The hydrochemical composition changes after the confluence of the Xixi River and Dongxi River are mainly affected by human activities and seawater in urban areas. This research could provide new perspectives and methods for detecting the influences of human and natural factors on the hydrochemistry of river water in humid regions worldwide.
英文关键词	hydrochemistry; human activity; component data analysis; Mahalanobis distance; Jinjiang watershed
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:001140446400001
来源期刊	WATER
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303739
作者单位	China Geological Survey; Institute of Hydrogeology & Environmental Geology, Chinese Academy of Geological Sciences; Chinese Academy of Geological Sciences; Southwest Jiaotong University
推荐引用方式 GB/T 7714	Zhu, Yuchen,Yang, Hongjie,Xiao, Yong,et al. Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China[J],2024,16(1).
APA	Zhu, Yuchen.,Yang, Hongjie.,Xiao, Yong.,Hao, Qichen.,Li, Yasong.,...&Wang, Jie.(2024).Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China.WATER,16(1).
MLA	Zhu, Yuchen,et al."Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China".WATER 16.1(2024).