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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*
Leng, Peifang1,2,3; Zhang, Qiuying4; Li, Fadong1,2; Kulmatov, Rashid5; Wang, Guoqin1,6; Qiao, Yunfeng1; Wang, Jianqi1; Peng, Yu1,2; Tian, Chao1; Zhu, Nong1; Hirwa, Hubert1,2; Khasanov, Sayidjakhon7
2021-09-01
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume284Pages:9
Corresponding AuthorLi, Fadong(lifadong@igsnrr.ac.cn)
AbstractRiver 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.
KeywordAmu Darya Syr Darya Rivers Salinization Nutrients Aral Sea basin
DOI10.1016/j.envpol.2021.117405
WOS KeywordLAND-COVER ; PHOSPHORUS ; DYNAMICS ; NITROGEN ; SALINIZATION ; ECOSYSTEM ; SALINITY ; CLIMATE ; CATCHMENTS ; RETENTION
Indexed BySCI
Language英语
Funding ProjectStrategic 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
Funding OrganizationStrategic 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
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000672596800007
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163862
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Fadong
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, 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
Recommended Citation
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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