IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Divergent patterns of soil phosphorus discharge from water-level fluctuation zone after full impoundment of Three Gorges Reservoir, China
Zhou, Jun1; Wu, Yanhong1; Wang, Xiaoxiao2; Bing, Haijian1; Chen, Yang1; Sun, Hongyang1; Zhong, Zhilin1
Corresponding AuthorZhou, Jun(zhoujun@imde.ac.cn) ; Wu, Yanhong(yhwu@imde.ac.cn)
2019
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
EISSN1614-7499
Volume26Issue:3Pages:2559-2568
SubtypeArticle
AbstractPhosphorus (P) discharged from soils in the water-level fluctuation (WLF) zone becomes increasingly important to the water quality control of the Three Gorges Reservoir (TGR) as the decrease in P input from upstream reaches and point-source pollution. To investigate the amount of soil P discharge from the WLF zone since the full impoundment of the TGR in 2010, soil and sediment samples were collected along the altitudinal gradients (140, 150, 160, 170, and 180m above sea level) in three transects in the middle reaches of the TGR. Soil P composition was determined by a sequential extraction procedure. Different amounts of P discharge from the WLF zone were found among three soil types because of their difference in the initial P content before impoundment, with an order of yellow earth (171.1gm(-2)), fluvo-aquic soil (141.7gm(-2)), and purple soil (73.8gm(-2)). An altitudinal pattern of soil P discharge was observed with the maximum at the 170-m sites. The downward transport of exchangeable P and clay-bound P with runoff was the major path of the soil P discharge at the 170-m sites with a slope gradient >15 degrees. Considerable P discharge with erosion at the upper section of the WLF zone was facilitated by the longer exposure period compared with that at bottom section (150-m sites) because of the annual anti-seasonal impoundment-exposure cycles of the TGR. The transformation of Al/Fe-P and subsequent release to water was a main mechanism of the soil P discharge during the impoundment period. The altitudinal pattern of P discharge was a result of joint effects of slope gradient, soil P forms, and the anti-seasonal hydrological regime of the TGR. The results highlight the critical role of the upper section (165-175m) in controlling the P output from the WLF zone into the water of the TGR.
KeywordSoil phosphorus discharge Water-level fluctuation zone Three Gorges Reservoir Transformation of phosphorus forms Water quality
DOI10.1007/s11356-018-3805-1
Indexed BySCI
WOS KeywordRIPARIAN ZONE ; FRACTIONS ; SEDIMENTS ; NITROGEN ; NUTRIENTS ; OPERATION ; POLLUTION ; UPSTREAM ; CROPLAND ; RELEASE
Language英语
Quartile3区
Funding ProjectNational Natural Science Foundation of China[41630751] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1702] ; Start-up Funds for Doctoral Research of China West Normal University[412654] ; CAS Light of West China Program ; China Scholarship Council
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WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000456198400043
Funding OrganizationNational Natural Science Foundation of China ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS ; Start-up Funds for Doctoral Research of China West Normal University ; CAS Light of West China Program ; China Scholarship Council
PublisherSPRINGER HEIDELBERG
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24751
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorZhou, Jun; Wu, Yanhong
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
2.China West Normal Univ, Sch Land & Resources, Nanchong 637000, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhou, Jun,Wu, Yanhong,Wang, Xiaoxiao,et al. Divergent patterns of soil phosphorus discharge from water-level fluctuation zone after full impoundment of Three Gorges Reservoir, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(3):2559-2568.
APA Zhou, Jun.,Wu, Yanhong.,Wang, Xiaoxiao.,Bing, Haijian.,Chen, Yang.,...&Zhong, Zhilin.(2019).Divergent patterns of soil phosphorus discharge from water-level fluctuation zone after full impoundment of Three Gorges Reservoir, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(3),2559-2568.
MLA Zhou, Jun,et al."Divergent patterns of soil phosphorus discharge from water-level fluctuation zone after full impoundment of Three Gorges Reservoir, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.3(2019):2559-2568.
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