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Title: Estimation of groundwater discharge and associated chemical fluxes into Poyang Lake, China: approaches using stable isotopes (δD and δ{sup 18}O) and radon

Abstract

Poyang Lake is the largest freshwater lake in China and is well known for its ecological and economic importance. Understanding the contribution of groundwater to Poyang Lake is important for the lake’s protection and management. In this study, stable isotopes (δD and δ{sup 18}O), {sup 222}Rn measurements, and corresponding models ({sup 222}Rn and {sup 18}O mass balance models) were employed to evaluate the groundwater discharge and associated chemical inputs to Poyang Lake. The results showed that the distribution of δ{sup 18}O in the lake water reflects the groundwater discharge into the lake. The groundwater discharge estimated using the {sup 222}Rn mass balance model was in reasonable agreement with the groundwater discharge derived from the {sup 18}O mass balance model. The {sup 222}Rn mass balance model showed that the groundwater discharge rate was 24.18 ± 6.85 mm/d with a groundwater discharge flux of (2.24 ± 0.63) × 10{sup 7} m{sup 3}/d, which accounts for 6.52–11.14% of river-water input in the Poyang Lake area. The groundwater discharge flux estimated using the {sup 18}O mass balance model was 3.17 × 10{sup 7} m{sup 3}/d, and the average groundwater discharge rate was 26.62 mm/d. The estimated groundwater discharge was used to estimate the associated chemical fluxes. It was found that groundwater-derived heavy metals such as ironmore » and manganese are potential threats to the lake ecological system because of their large inputs from groundwater discharge.« less

Authors:
; ; ; ; ; ;  [1]
  1. China University of Geosciences, State Key Laboratory of Biogeology and Environmental Geology & MOE Key Laboratory of Groundwater Circulation and Environmental Evolution (China)
Publication Date:
OSTI Identifier:
22780859
Resource Type:
Journal Article
Journal Name:
Hydrogeology Journal
Additional Journal Information:
Journal Volume: 26; Journal Issue: 5; Other Information: Copyright (c) 2018 Springer-Verlag GmbH Germany, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1431-2174
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; CHINA; DEUTERIUM; ECOSYSTEMS; ENVIRONMENTAL PROTECTION; FRESH WATER; GROUND WATER; IRON; LAKES; MANGANESE; MASS BALANCE; OXYGEN 18; RADON; RADON 222; RIVERS

Citation Formats

Liao, Fu, Wang, Guangcai, Shi, Zheming, Cheng, Guoqiang, Kong, Qingmin, Mu, Wenqing, and Guo, Liang. Estimation of groundwater discharge and associated chemical fluxes into Poyang Lake, China: approaches using stable isotopes (δD and δ{sup 18}O) and radon. United States: N. p., 2018. Web. doi:10.1007/S10040-018-1793-3.
Liao, Fu, Wang, Guangcai, Shi, Zheming, Cheng, Guoqiang, Kong, Qingmin, Mu, Wenqing, & Guo, Liang. Estimation of groundwater discharge and associated chemical fluxes into Poyang Lake, China: approaches using stable isotopes (δD and δ{sup 18}O) and radon. United States. doi:10.1007/S10040-018-1793-3.
Liao, Fu, Wang, Guangcai, Shi, Zheming, Cheng, Guoqiang, Kong, Qingmin, Mu, Wenqing, and Guo, Liang. Wed . "Estimation of groundwater discharge and associated chemical fluxes into Poyang Lake, China: approaches using stable isotopes (δD and δ{sup 18}O) and radon". United States. doi:10.1007/S10040-018-1793-3.
@article{osti_22780859,
title = {Estimation of groundwater discharge and associated chemical fluxes into Poyang Lake, China: approaches using stable isotopes (δD and δ{sup 18}O) and radon},
author = {Liao, Fu and Wang, Guangcai and Shi, Zheming and Cheng, Guoqiang and Kong, Qingmin and Mu, Wenqing and Guo, Liang},
abstractNote = {Poyang Lake is the largest freshwater lake in China and is well known for its ecological and economic importance. Understanding the contribution of groundwater to Poyang Lake is important for the lake’s protection and management. In this study, stable isotopes (δD and δ{sup 18}O), {sup 222}Rn measurements, and corresponding models ({sup 222}Rn and {sup 18}O mass balance models) were employed to evaluate the groundwater discharge and associated chemical inputs to Poyang Lake. The results showed that the distribution of δ{sup 18}O in the lake water reflects the groundwater discharge into the lake. The groundwater discharge estimated using the {sup 222}Rn mass balance model was in reasonable agreement with the groundwater discharge derived from the {sup 18}O mass balance model. The {sup 222}Rn mass balance model showed that the groundwater discharge rate was 24.18 ± 6.85 mm/d with a groundwater discharge flux of (2.24 ± 0.63) × 10{sup 7} m{sup 3}/d, which accounts for 6.52–11.14% of river-water input in the Poyang Lake area. The groundwater discharge flux estimated using the {sup 18}O mass balance model was 3.17 × 10{sup 7} m{sup 3}/d, and the average groundwater discharge rate was 26.62 mm/d. The estimated groundwater discharge was used to estimate the associated chemical fluxes. It was found that groundwater-derived heavy metals such as iron and manganese are potential threats to the lake ecological system because of their large inputs from groundwater discharge.},
doi = {10.1007/S10040-018-1793-3},
journal = {Hydrogeology Journal},
issn = {1431-2174},
number = 5,
volume = 26,
place = {United States},
year = {2018},
month = {8}
}