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  4. 中国科学院页岩气与地质工程重点实验室
Natural and anthropogenic factors affecting geochemistry of the Jialing and Yangtze Rivers in urban Chongqing, SW China

文献类型：期刊论文

作者Qin, Tong1; Yang, Pingheng1,2,3; Groves, Chris3; Chen, Feng1; Xie, Guowen1; Zhan, Zhaojun1
刊名APPLIED GEOCHEMISTRY
出版日期2018-11-01
卷号98页码:448-458
关键词Geochemistry Rock weathering Anthropogenic activities Principal component analysis Yangtze River China
ISSN号0883-2927
DOI10.1016/j.apgeochem.2018.10.009
英文摘要Owing to the complex relationship between natural factors and anthropogenic activities, rivers passing through urban areas present special challenges to geochemists attempting to understand geochemical conditions and fluxes. Research here on a river impacted by urban development, influenced by both natural and anthropogenic factors, helps to understand the mechanisms of the processes that cause changes in water quality. In this study, we collected water samples weekly at three sampling sites from the Jialing and Yangtze Rivers in the urban area of Chongqing. To explore the evolutionary processes and factors influencing surface water quality, we used stoichiometry and principle component analysis (PCA). Results show that the samples belonged to the HCO3 center dot SO4-Ca hydrochemical facies. The hydrochemical characteristics of the two rivers were mainly controlled by rock weathering. Carbonate mineral weathering exhibited the largest contribution. Sulfuric acid was involved in carbonate mineral weathering reactions, but gypsum dissolution had little effect on surface water chemistry. PCA revealed that rock weathering, soil erosion, domestic sewage, and agricultural activities contribute to the dissolved chemical load in the Jialing and Yangtze Rivers. The chemical characteristics of the Yangtze River mainstream exhibited changes due to recharge from the Jialing River. Compared with historical data (1959-1990), we found that river water in our study area was more acidic because of coal emissions from industrial activities in Sichuan and Guizhou Provinces. As a result of urbanization and the increase in domestic sewage, the average Cl-/Na+ molar ratio at the sampling sites is approximately 50% greater than historical background data. Furthermore, NO3- was sensitive to agricultural activities, indicating that agricultural activities have an effect on the Jialing and Yangtze Rivers in the urban Chongqing.
WOS关键词MAJOR ION CHEMISTRY ; WATER CHEMISTRY ; FLUVIAL GEOCHEMISTRY ; WEATHERING PROCESSES ; SOUTHWEST CHINA ; RAINFALL EVENTS ; DISSOLVED-LOAD ; MIN-JIANG ; BASIN ; IDENTIFICATION
资助项目National Natural Science Foundation of China[41103068] ; Fundamental Research Funds for the Central Universities[XDJK2018AB002] ; Fundamental Research Funds for the Central Universities[SWU116087] ; Fundamental Research Funds for the Central Universities[XDJK2017B13] ; China Scholarship Council
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000450301100041
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council ; China Scholarship Council
源URL[http://ir.iggcas.ac.cn/handle/132A11/89421]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Yang, Pingheng
作者单位1.Southwest Univ, Sch Geog Sci, Minist Nat Resources Peoples Republ China, Field Sci Observat & Res Base Karst Ecoenvironm N, Chongqing 400715, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Western Kentucky Univ, Dept Geog & Geol, Crawford Hydrol Lab, Bowling Green, KY 42101 USA
推荐引用方式
GB/T 7714		 Qin, Tong,Yang, Pingheng,Groves, Chris,et al. Natural and anthropogenic factors affecting geochemistry of the Jialing and Yangtze Rivers in urban Chongqing, SW China[J]. APPLIED GEOCHEMISTRY,2018,98:448-458.
APA Qin, Tong,Yang, Pingheng,Groves, Chris,Chen, Feng,Xie, Guowen,&Zhan, Zhaojun.(2018).Natural and anthropogenic factors affecting geochemistry of the Jialing and Yangtze Rivers in urban Chongqing, SW China.APPLIED GEOCHEMISTRY,98,448-458.
MLA Qin, Tong,et al."Natural and anthropogenic factors affecting geochemistry of the Jialing and Yangtze Rivers in urban Chongqing, SW China".APPLIED GEOCHEMISTRY 98(2018):448-458.

入库方式： OAI收割

来源：地质与地球物理研究所

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