生态与农村环境学报2026，Vol.42Issue(9)：1202-1213,12.DOI:10.19741/j.issn.1673-4831.2025.0497
中国南方城市湖泊水化学特征及影响因素
Hydrochemical Characteristics and Influencing Factors of Urban Lakes in Southern China
摘要
Abstract
Nanchang,a typical waterfront city in Southern China,experiences substantial anthropogenic influences on the hydrochemistry of its urban lakes.However,there is a lack of research on the impacts and underlying controls.In this study,the Nanchang urban lakes(Yaohu Lake,Aixihu Lake,Qingshanhu Lake and Xianghu Lake)and rivers(Ganjiang River and Fuhe River)were taken as the objects.Combined with correlation analysis,principal component analysis(PCA),Gibbs diagrams,and ion ratios,the pH,electrical conductivity(EC),total dissolved solids(TDS),and anion/cation concentrations of water samples collected from November 2020 to October 2021 were studied to reveal the hydro-chemical characteristics and their influencing factors.Results show that the Nanchang urban lakes had a slightly alkaline pH range(7.81-8.05)and TDS values were 110-364 mg·L-1.Aixihu Lake exhibited a unique hydrochemical type of SO4 2--HCO3--Mg2+-Ca2+-Na+due to industrial pollution,while other lakes were predominantly of the HCO3--SO42--Ca2+-Na+type.Unlike the rivers,the ionic concentrations of lakes showed decreasing trends during the rainy season with the lowest levels in August,indicating reduced anthropogenic pollutant inputs from rainy season flushing.Multivariate analysis reveals that peripheral lakes(Yaohu,Xianghu)were significantly influenced by silicate weathering,whereas central urban lakes(Aixihu,Qingshanhu)were predominantly affected by anthropogenic activities like industrial pollution,municipal sewage,and agricultural fertilizer.This study highlights the complexity of hydrochemical characteristics in Southern China's urban lakes,underscores the substantial impact of human activities on water quality,and provides a scientific ba-sis for urban water environment management.关键词
南方城市湖泊/水化学/离子来源/自然风化/人为活动Key words
southern urban lakes/hydrochemistry/ion sources/natural weathering/anthropogenic activities分类
资源环境引用本文复制引用
郑芳文,饶文波,栗天宁,唐林森,张素建,徐春霞,白丽..中国南方城市湖泊水化学特征及影响因素[J].生态与农村环境学报,2026,42(9):1202-1213,12.基金项目
中国中铁股份有限公司科技研究开发计划项目(2022-重大-08) （2022-重大-08）
江西省水利厅科技项目(202123YBKT10) （202123YBKT10）
江西省级重点创新训练项目(202411319002) （202411319002）
江西省自然科学基金(20224BAB203043) （20224BAB203043）
