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The influence of urbanization on karst rivers based on nutrient concentration and nitrate dual isotopes: an example from southwestern China
Alternative TitleZhong-Jun Wang;Fu-Jun Yue;Jie Zeng;Si-Liang Li6
Zhong-Jun Wang;  Fu-Jun Yue;  Jie Zeng;  Si-Liang Li
2017
Source PublicationActa Geochimica
Volume36Issue:3Pages:446-451
Abstract

China is experiencing rapid urbanization that has changed the water quality of rivers, especially nutrient loads. In this study, a typical urban river located in a karst area, Chengguan River, was chosen to explore the influence of urbanization on river ecosystems based on nutrient concentration and nitrate isotopes. The results show monthly variability of water chemistry and nutrient concentration. Nutrient concentration in two tributaries and the mainstem showed significant spatial variability, with heavy N and P pollution in one tributary near a suburban area, indicating a response to different levels of urbanization. Measurements of nitrate dual isotopes suggest that volatilization, assimilation, nitrification, and denitrification all occur in the polluted river. Water chemistry and nitrate isotopes show that major nitrogen sources included domestic waste and agricultural input, such as chemical fertilizer and manure. The results suggest that urbanization increases nutrient concentrations and accelerates the riverine nitrogen dynamic, and point to the need to manage point sources of sewage effluents to improve the water quality of urban rivers in southwestern China.

KeywordUrbanization Urban River Nitrate Isotopes Southwestern China Chengguan River
Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/7734
Collection环境地球化学国家重点实验室
Affiliation1.Institute of Geochemistry, Chinese Academy of Sciences, State Key Laboratory of Environmental Geochemistry, Guiyang, Guizhou 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Guizhou University, Key Laboratory of Karst Environment and Geohazard, Ministry of Land and Resources, Guiyang, Guizhou 550025, China
4.Puding Karst Ecosystem Research Station, Institute of Geochemistry, Chinese Academy of Sciences, Anshun 562100, China
5.Institute of Surface-Earth System Science, Tianjin University, State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin 300072, China
6.School of Geographical and Earth Sciences, University of Glasgow, Glasgow G12 8QQ, UK
First Author Affilication中国科学院地球化学研究所
Corresponding Author Affilication中国科学院地球化学研究所
Recommended Citation
GB/T 7714
Zhong-Jun Wang;Fu-Jun Yue;Jie Zeng;Si-Liang Li. The influence of urbanization on karst rivers based on nutrient concentration and nitrate dual isotopes: an example from southwestern China[J]. Acta Geochimica,2017,36(3):446-451.
APA Zhong-Jun Wang;Fu-Jun Yue;Jie Zeng;Si-Liang Li.(2017).The influence of urbanization on karst rivers based on nutrient concentration and nitrate dual isotopes: an example from southwestern China.Acta Geochimica,36(3),446-451.
MLA Zhong-Jun Wang;Fu-Jun Yue;Jie Zeng;Si-Liang Li."The influence of urbanization on karst rivers based on nutrient concentration and nitrate dual isotopes: an example from southwestern China".Acta Geochimica 36.3(2017):446-451.
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