Altitudinal-modulated sediment inputs rather than the land-uses determine the distribution of lead in the riparian soils of the Three Gorges Reservoir

doi:10.1007/s10653-020-00579-2

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部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

	Altitudinal-modulated sediment inputs rather than the land-uses determine the distribution of lead in the riparian soils of the Three Gorges Reservoir
	Qiu, Shaojun 1,2; Bing, Haijian 2; Zhong, Zhilin 1,2; Wu, Yanhong 2
刊名	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
	2020-04-22
页码	DOI: 10.1007/s10653-020-00579-2
关键词	Toxic metal Fractions Source identification Contamination assessment Riparian soils Large reservoir
ISSN号	0269-4042
DOI	10.1007/s10653-020-00579-2
通讯作者	Bing, Haijian(hjbing@imde.ac.cn)
产权排序	1
文献子类	Article; Early Access
英文摘要	Lead (Pb) as a toxic metal has potential ecological hazards for aquatic quality. However, the variation in the distribution patterns of Pb and its fractions in flooding soils with frequent and anti-seasonal water-level fluctuation and various human disturbances remains unclear. In this study, the distribution of Pb and its fractions in the riparian soils of the Three Gorges Reservoir (TGR) were delineated based on the differences in altitude and land-uses including farmland, orchard, forest and residential area. Then, we assessed the contamination and eco-risk of Pb in the soils and deciphered the key factors determining the distribution of Pb and its fractions. The results showed that the concentrations of Pb and its fractions in the soils decreased significantly with altitude, while the significant difference was not observed among the land-uses. The contamination of Pb in the soils reached a moderate level, and its eco-risk was very low by the potential eco-risk index and mobile Pb fraction. The source of soil Pb at the upper zone (> 160 m) was mainly from natural inputs, while the source at the lower zone (<= 160 m) was attributed to anthropogenic contributions including ores mining, fossil fuel combustion, vehicle emissions and atmospheric deposition indicated by Pb isotopic ratios. With the limited effect of land-uses, the sediment inputs regulated by frequent water-level fluctuation determined the altitudinal distribution of Pb and its fractions in the flooding soils. The soil particle size dominated the migration and transformation of Pb over other soil properties such as pH and organic matters. The results of this study indicate that the anthropogenic Pb mainly exists in the soils of lower riparian zone in the TGR, and the frequent and anti-seasonal dry and rewetting alternation aggravates the potential for the Pb migration downstream due to the determinant of soil particles.
电子版国际标准刊号	1573-2983
资助项目	Youth Innovation Promotion Association[2017424] ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences
WOS关键词	HEAVY-METAL CONTAMINATION ; LEVEL-FLUCTUATION ZONE ; SEQUENTIAL EXTRACTION PROCEDURE ; EASTERN TIBETAN PLATEAU ; ATMOSPHERIC DEPOSITION ; ANTHROPOGENIC METALS ; SURFACE SEDIMENTS ; RIVER SEDIMENTS ; FLOW REGULATION ; RISK-ASSESSMENT
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000528125900002
资助机构	Youth Innovation Promotion Association ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/34563]
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
通讯作者	Bing, Haijian
作者单位	1.Univ Chinese Acad Sci, Beijing 10049, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China;
推荐引用方式 GB/T 7714	Qiu, Shaojun,Bing, Haijian,Zhong, Zhilin,et al. Altitudinal-modulated sediment inputs rather than the land-uses determine the distribution of lead in the riparian soils of the Three Gorges Reservoir[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2020:DOI: 10.1007/s10653-020-00579-2.
APA	Qiu, Shaojun,Bing, Haijian,Zhong, Zhilin,&Wu, Yanhong.(2020).Altitudinal-modulated sediment inputs rather than the land-uses determine the distribution of lead in the riparian soils of the Three Gorges Reservoir.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,DOI: 10.1007/s10653-020-00579-2.
MLA	Qiu, Shaojun,et al."Altitudinal-modulated sediment inputs rather than the land-uses determine the distribution of lead in the riparian soils of the Three Gorges Reservoir".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH (2020):DOI: 10.1007/s10653-020-00579-2.