中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Divergent patterns of soil phosphorus discharge from water-level fluctuation zone after full impoundment of Three Gorges Reservoir, China

文献类型:期刊论文

作者Zhou, Jun1; Wu, Yanhong1; Wang, Xiaoxiao2; Bing, Haijian1; Chen, Yang1; Sun, Hongyang1; Zhong, Zhilin1
刊名ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期2019
卷号26期号:3页码:2559-2568
ISSN号0944-1344
关键词Soil phosphorus discharge Water-level fluctuation zone Three Gorges Reservoir Transformation of phosphorus forms Water quality
DOI10.1007/s11356-018-3805-1
通讯作者Zhou, Jun(zhoujun@imde.ac.cn) ; Wu, Yanhong(yhwu@imde.ac.cn)
英文摘要Phosphorus (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.
WOS关键词RIPARIAN ZONE ; FRACTIONS ; SEDIMENTS ; NITROGEN ; NUTRIENTS ; OPERATION ; POLLUTION ; UPSTREAM ; CROPLAND ; RELEASE
资助项目National 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
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:000456198400043
资助机构National 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
源URL[http://ir.imde.ac.cn/handle/131551/24751]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
综合测试与模拟中心
通讯作者Zhou, Jun; Wu, Yanhong
作者单位1.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
推荐引用方式
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.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。