Dam Effect on Soil Nutrients and Potentially Toxic Metals in a Reservoir Riparian Zone

doi:10.1002/clen.201700497

	Dam Effect on Soil Nutrients and Potentially Toxic Metals in a Reservoir Riparian Zone
	Zhang, Aiying 3; Cornwell, Will 1; Li, Zhaojia 2; Xiong, Gaoming ; Yang, Dan 3; Xie, Zongqiang
	2019
发表期刊	CLEAN-SOIL AIR WATER
ISSN	1863-0650
卷号	47 期号:1
摘要	The unique hydrological regime of Three Gorges Dam (TGD) has brought enormous challenges to the riparian zone (RRZ), which plays an important role in regulating sediment and nutrient transport into the Yangtze River. The soil in a RRZ is one of the key factors that affect the water quality. After 4 years of winter-flooding, the concentration of soil nutrients and potentially toxic metals between the flooded reservoir RRZ and adjacent non-flooded upland (Upland) are examined. There are two main results: First, soil organic carbon and soil available potassium concentration were significantly lower in RRZ than in Upland. Soil total nitrogen (TN) concentration showed the same trend, but with no significance. Soil available phosphorus concentration is significantly higher in RRZ. Second, the concentrations of all the tested potentially toxic metals (Cd, Cr, Cu, Pb, Zn), their geoaccumulation index (I-geo) values and potential ecological risk index (E-i) values are significantly higher in RRZ than in Upland. Cd had the highest I-geo and E-i values in RRZ. The present results indicated that the flood-dry-flood cycle caused by TGD has changed the soil nutrient concentrations and increased the potentially toxic metal concentrations. There is a cross-contamination risk of the soil in RRZ, perhaps related to fertilization. As the last protective barrier for the Yangtze River, soil potentially toxic metals pollution control should deserve a considerable attention in the RRZ formed by TGD.
关键词	geoaccumulation index nitrogen potential ecological risk potentially toxic metals riparian zone
学科领域	Green & Sustainable Science & Technology ; Environmental Sciences ; Marine & Freshwater Biology ; Water Resources
DOI	10.1002/clen.201700497
收录类别	SCI
语种	英语
WOS关键词	3 GORGES RESERVOIR ; LEVEL-FLUCTUATION ZONE ; NITRATE REMOVAL ; WETLAND SOILS ; HEAVY-METALS ; WATER ; SEDIMENTS ; POLLUTION ; CHINA ; CONTAMINATION
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS记录号	WOS:000455212400003
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1863-0669
资助机构	Chinese Academy of ScienceChinese Academy of Sciences [KZCX2-XB3-09]
作者邮箱	xie@ibcas.ac.cn
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/19582
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun Xiangshan, Beijing 100093, Peoples R China 2.Univ New South Wales, Sch Biol Earth & Environm Sci, Ecol & Evolut Res Ctr, Sydney, NSW 2052, Australia 3.Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Aiying,Cornwell, Will,Li, Zhaojia,et al. Dam Effect on Soil Nutrients and Potentially Toxic Metals in a Reservoir Riparian Zone[J]. CLEAN-SOIL AIR WATER,2019,47(1).
APA	Zhang, Aiying,Cornwell, Will,Li, Zhaojia,Xiong, Gaoming,Yang, Dan,&Xie, Zongqiang.(2019).Dam Effect on Soil Nutrients and Potentially Toxic Metals in a Reservoir Riparian Zone.CLEAN-SOIL AIR WATER,47(1).
MLA	Zhang, Aiying,et al."Dam Effect on Soil Nutrients and Potentially Toxic Metals in a Reservoir Riparian Zone".CLEAN-SOIL AIR WATER 47.1(2019).

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