干旱区生态环境知识资源中心(Arid): Contribution of groundwater discharge and associated contaminants input to Dongting Lake, Central China, using multiple tracers (Rn-222,O-18, Cl-)

Arid

DOI	10.1007/s10653-020-00687-z
	Contribution of groundwater discharge and associated contaminants input to Dongting Lake, Central China, using multiple tracers (Rn-222,O-18, Cl-)
	Sun, Xiaoliang; Du, Yao; Deng, Yamin; Fan, Hongchen; Tao, Yanqiu; Ma, Teng
通讯作者	Du, Y
来源期刊	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN	0269-4042
EISSN	1573-2983
英文摘要	Lacustrine groundwater discharge (LGD) can play an important role in water and contaminant mass balance of lakes. Dongting Lake is the second largest fresh lake in China which is connected to Yangtze River and has quite prominent ecological status and function within Yangtze River basin. However, the effect of groundwater discharge on the balance of water and contaminant in Dongting Lake has long been overlooked. This study estimated the groundwater discharge and associated contaminants input into Dongting Lake during the dry season using multiple tracers (Rn-222,O-18, Cl-). After sensitivity analysis of different models, it is found that the result of(222)Rn mass balance model is the most reliable. Based on the(222)Rn mass balance model, the groundwater discharge rate is estimated to be 73.94 mm/d and the contribution of LGD to water balance is 10.94%. As the main nutrient components, NH3-N, P and Si from groundwater input account for 23.65%, 5.12% and 30.15% % of the total input, respectively. As the main heavy metal components, Fe, Mn and As from groundwater input all account for more than 50% of the total input. Although the LGD rate is relatively small, the contaminant input from LGD is significant enough, which may be a potential threat to the ecological stability of Dongting Lake. In this study, the mass balance models of multiple tracers were integrated to understand the role of groundwater in maintaining the water balance and pollution status of Dongting Lake, which has certain reference significance for the LGD study in plain lakes or reservoirs with complex water systems in humid regions.
英文关键词	Groundwater discharge Dongting Lake Rn-222 Mass balance
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000559432900002
WOS关键词	BADAIN JARAN DESERT ; STABLE-ISOTOPES ; WATER ; BALANCE ; RIVER ; EXCHANGE ; REVEAL ; MODEL ; O-18 ; H-2
WOS类目	Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328155
作者单位	[Sun, Xiaoliang] China Univ Geosci, Geol Survey, Wuhan 430074, Peoples R China; [Du, Yao; Deng, Yamin; Fan, Hongchen; Tao, Yanqiu; Ma, Teng] China Univ Geosci, Sch Environm Studies, Lumo Rd 388, Wuhan 430074, Peoples R China; [Du, Yao; Deng, Yamin; Fan, Hongchen; Tao, Yanqiu; Ma, Teng] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiaoliang,Du, Yao,Deng, Yamin,et al. Contribution of groundwater discharge and associated contaminants input to Dongting Lake, Central China, using multiple tracers (Rn-222,O-18, Cl-)[J].
APA	Sun, Xiaoliang,Du, Yao,Deng, Yamin,Fan, Hongchen,Tao, Yanqiu,&Ma, Teng.
MLA	Sun, Xiaoliang,et al."Contribution of groundwater discharge and associated contaminants input to Dongting Lake, Central China, using multiple tracers (Rn-222,O-18, Cl-)".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH