Hydrochemical characteristics and source identification of nitrate in surface water and shallow groundwater in the Poyang Lake Basin, China

被引:0
作者
Dong, Yihui [1 ,2 ]
Zhu, Shiyi [1 ]
Li, Jiale [1 ,3 ]
Liu, Wenwen [1 ]
Li, Zebing [1 ]
Sun, Zhanxue [1 ]
Liu, Chunhuang [1 ,4 ]
机构
[1] East China Univ Technol, Sch Water Resources & Environm Engn, Nanchang 330013, Peoples R China
[2] Minist Nat Resources, Key Lab Groundwater Sci & Engn, Shijiazhuang 050061, Peoples R China
[3] China Univ Geosci, Key Lab Groundwater Qual & Hlth, Minist Educ, Wuhan 430078, Peoples R China
[4] China Natl Nucl Corp, Res Inst 270, Nanchang 330200, Peoples R China
基金
中国国家自然科学基金;
关键词
Poyang Lake basin; Hydrochemical characteristics; Groundwater; Nitrogen and oxygen stable isotopes; Bayesian model; AGRICULTURAL AREAS; NITROGEN; DELTA-O-18; DELTA-N-15; SYSTEM; RIVER;
D O I
10.1007/s12665-025-12277-2
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The hydrochemical characteristics and nitrate nitrogen-oxygen isotopes of lake water systems provide critical insights for identifying nitrate pollution sources and elucidating their formation mechanisms. This study investigated the Poyang Lake Basin using an integrated approach combining graphical analysis, statistical modeling, and Bayesian inference, based on 26 surface water and 31 groundwater samples collected in November 2019. The results revealed complex hydrochemical diversity in the study area, with HCO3-Ca type water dominating both surface water (92.3%) and shallow groundwater (83.9%). While surface water originated primarily from atmospheric precipitation, shallow groundwater showed additional influences from water-rock interactions and cation exchange. Carbonate rocks, evaporites, and silicates constituted the primary anion sources for groundwater. Surface water nitrate exhibited strong positive correlations (r = 0.54-0.93) with TDS, HCO3-, Cl-, SO42-, and major cations (K+, Ca2+, Na+, Mg2+). In contrast, groundwater nitrate demonstrated weaker correlations (r = 0.31-0.63) with these parameters, suggesting more intricate formation processes. Neither nitrification nor denitrification significantly influenced basin water chemistry. Source apportionment analysis identified soil nitrogen (45.2%) as the dominant nitrate contributor in surface water, followed by atmospheric deposition (28.1%), agricultural fertilizers (19.7%), and domestic waste (7.0%). These findings establish a theoretical foundation for ecological management and nitrate pollution control through comprehensive hydrochemical characterization and pollution source identification.
引用
收藏
页数:14
相关论文
共 40 条
[1]   Delineation of contaminant sources and denitrification using isotopes of nitrate near a wastewater treatment plant in peri-urban settings [J].
Adebowale, Temitope ;
Surapaneni, Aravind ;
Faulkner, David ;
McCance, William ;
Wang, Shiqin ;
Currell, Matthew .
SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 651 :2701-2711
[2]   Source, transport, and fate of nitrate in shallow groundwater in the eastern Niger Delta [J].
Aleku, Dogo Lawrence ;
Dähnke, Kirstin ;
Pichler, Thomas .
Environmental Science and Pollution Research, 2024, 31 (56) :65034-65050
[3]   Use of multiple isotope tracers to evaluate denitrification in ground water: Study of nitrate from a large-flux septic system plume [J].
Aravena, R ;
Robertson, WD .
GROUND WATER, 1998, 36 (06) :975-982
[4]   Nitrogen species and microbial community coevolution along groundwater flowpath in the southwest of Poyang Lake area, China [J].
Chen, Xianglong ;
Wang, Guangcai ;
Sheng, Yizhi ;
Liao, Fu ;
Mao, Hairu ;
Li, Bo ;
Zhang, Hongyu ;
Qiao, Zhiyuan ;
He, Jiahui ;
Liu, Yingxue ;
Lin, Yilun ;
Yang, Ying .
CHEMOSPHERE, 2023, 329
[5]   Nitrogen and oxygen isotopic compositions of water-soluble nitrate in Taihu Lake water system, China: implication for nitrate sources and biogeochemical process [J].
Chen, Zi-Xiang ;
Yu, Lei ;
Liu, Wei-Guo ;
Lam, Michael H. W. ;
Liu, Gui-Jian ;
Yin, Xue-Bin .
ENVIRONMENTAL EARTH SCIENCES, 2014, 71 (01) :217-223
[6]   Identification of the sources and fate of NO3--N in shallow groundwater around a plateau lake in southwest China using NO3- isotopes (δ15N and δ18O) and a Bayesian model [J].
Cui, Rongyang ;
Fu, Bin ;
Mao, Kunming ;
Chen, Anqiang ;
Zhang, Dan .
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2020, 270
[7]  
[董一慧 Dong Yihui], 2021, [长江流域资源与环境, Resources and Environment in the Yangtze Basin], V30, P2972
[8]   Nitrate distribution and dynamics as indicators to characterize karst groundwater flow in a mined mineral deposit in southwestern China [J].
Huang, He ;
Chen, Zhihua ;
Wang, Tao ;
Xiang, Caijuan ;
Zhang, Liang ;
Zhou, Gaoming ;
Sun, Bangtao ;
Wang, Yong .
HYDROGEOLOGY JOURNAL, 2019, 27 (06) :2077-2089
[9]  
Jung H., 2020, WATER-SUI, V12, P1, DOI [10.3390/w12010138, DOI 10.3390/w12010138]
[10]  
Kendall C, 1998, ISOTOPE TRACERS IN CATCHMENT HYDROLOGY, P519