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Agricultural impacts drive longitudinal variations of riverine water quality of the Aral Sea basin (Amu Darya and Syr Darya Rivers), Central Asia*

文献类型：期刊论文

作者Leng, Peifang1,2,3; Zhang, Qiuying4; Li, Fadong1,2; Kulmatov, Rashid5; Wang, Guoqin2,6; Qiao, Yunfeng2; Wang, Jianqi2; Peng, Yu1,2; Tian, Chao2; Zhu, Nong2
刊名ENVIRONMENTAL POLLUTION
出版日期2021-09-01
卷号284页码:9
ISSN号0269-7491
关键词Amu Darya Syr Darya Rivers Salinization Nutrients Aral Sea basin
DOI10.1016/j.envpol.2021.117405
通讯作者Li, Fadong(lifadong@igsnrr.ac.cn)
英文摘要River ecosystems are under increasing stress in the background of global change and ever-growing anthropogenic impacts in Central Asia. However, available water quality data in this region are insufficient for a reliable assessment of the current status, which come as no surprise that the limited knowledge of regulating processes for further prediction of solute variations hinders the development of sustainable management strategies. Here, we analyzed a dataset of various water quality variables from two sampling campaigns in 2019 in the catchments of two major rivers in Central Asia-the Amu Darya and Syr Darya Rivers. Our results suggested high spatial heterogeneity of salinity and major ion components along the longitudinal directions in both river catchments, pointing to an increasing influence of human activities toward downstream areas. We linked the modeling outputs from the global nutrient model (IMAGE-GNM) to riverine nutrients to elucidate the effect of different natural and anthropogenic sources in dictating the longitudinal variations of the riverine nutrient concentrations (N and P). Diffuse nutrient loadings dominated the export flux into the rivers, whereas leaching and surface runoff constituted the major fractions for N and P, respectively. Discharge of agricultural irrigation water into the rivers was the major cause of the increases in nutrients and salinity. Given that the conditions in Central Asia are highly susceptible to climate change, our findings call for more efforts to establish holistic management of water quality.
WOS关键词LAND-COVER ; PHOSPHORUS ; DYNAMICS ; NITROGEN ; SALINIZATION ; ECOSYSTEM ; SALINITY ; CLIMATE ; CATCHMENTS ; RETENTION
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040302] ; National Natural Science Foundation of China[U1803244] ; National Natural Science Foundation of China[41761144053] ; Shihezi Science and Technology Project[2019ZH13] ; Shihezi Science and Technology Project[2021BC003] ; CAS-DAAD Joint Fellowship Programme for Doctoral Students
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000672596800007
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Shihezi Science and Technology Project ; CAS-DAAD Joint Fellowship Programme for Doctoral Students
源URL[http://ir.igsnrr.ac.cn/handle/311030/163861]  
专题中国科学院地理科学与资源研究所
通讯作者Li, Fadong
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.UFZ Helmholtz Ctr Environm Res, Dept Lake Res, D-39114 Magdeburg, Germany
4.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
5.Natl Univ Uzbekistan, Dept Biol, Tashkent 100170, Uzbekistan
6.United Nations Environm Programme, Int Ecosyst Management Partnership, Beijing 100101, Peoples R China
7.Tashkent Inst Irrigat & Agr Mech Engineers, Tashkent 100000, Uzbekistan
推荐引用方式
GB/T 7714		 Leng, Peifang,Zhang, Qiuying,Li, Fadong,et al. Agricultural impacts drive longitudinal variations of riverine water quality of the Aral Sea basin (Amu Darya and Syr Darya Rivers), Central Asia*[J]. ENVIRONMENTAL POLLUTION,2021,284:9.
APA Leng, Peifang.,Zhang, Qiuying.,Li, Fadong.,Kulmatov, Rashid.,Wang, Guoqin.,...&Khasanov, Sayidjakhon.(2021).Agricultural impacts drive longitudinal variations of riverine water quality of the Aral Sea basin (Amu Darya and Syr Darya Rivers), Central Asia*.ENVIRONMENTAL POLLUTION,284,9.
MLA Leng, Peifang,et al."Agricultural impacts drive longitudinal variations of riverine water quality of the Aral Sea basin (Amu Darya and Syr Darya Rivers), Central Asia*".ENVIRONMENTAL POLLUTION 284(2021):9.

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来源：地理科学与资源研究所

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