环境工程学报2025，Vol.19Issue(2)：325-332,8.DOI:10.12030/j.cjee.202409149
鄱阳湖流域典型围垦区电排灌站排水的水量水质时空分布特征
Spatiotemporal characteristics of the discharged water quantity and quality from electric drainage and irrigation stations in a typical reclamation area of Poyang Lake
摘要
Abstract
A study was conducted to examine the temporal and spatial distribution of water quantity and quality in the drainage from electric drainage and irrigation stations in the Jiangxiang Lianwei region,a representative reclamation area within the Poyang Lake Basin,through collecting the historical data of rainfall,the discharged water from electric drainage and irrigation stations and site investigation of water quality.The purpose of this study was to establish a scientific foundation for control non-point source pollution from agriculture in reclamation zones.The results showed that there was a strong positive correlation between the displacement and rainfall intensity(P＜0.05)or rain type,and the displacement in 2023(26.91 million m3)was much lower than that in 2021 by 75.04％.A higher percentage of the displacement was caused by heavy rainfall events,which predominantly occurred during the rising water period.In 2023,the average concentrations of TN and TP in the discharged water exceeded the Class Ⅲ surface water standards(1.0 mg·L-1、0.2 mg·L-1),of which the highest concentrations of TN and TP appeared at the rising water stage,and the average times of exceeding standard were 3.03 and 0.31,respectively,and the loading of discharged phosphorus and nitrogen was over 90％of that in 2023.Spatially,the order of the displacement was the central section＞lower section＞upper section,the order of the average concentrations of nitrogen and phosphorus was the upper section＞lower section＞central section,and the order of the loading of the discharged nitrogen and phosphorus was the central section＞lower section＞upper section.Furthermore,compared to the middle branch,the outflow towards the south branch of the Ganjiang River showed higher water volumes,nitrogen and phosphorus concentrations and loadings.关键词
电排灌站/时空分布/水质分析/围垦区Key words
electric drainage and irrigation stations/spatial and temporal distribution/water quality analysis/reclamation area分类
环境科学引用本文复制引用
杜必发,黄建榕,朱利英,李昆,胡大洲,桂双林,魏源送..鄱阳湖流域典型围垦区电排灌站排水的水量水质时空分布特征[J].环境工程学报,2025,19(2):325-332,8.基金项目
长江生态环境保护修复联合研究(2022-LHYJ-02-0505-01,2019-LHYJ-01-0.000211-18) （2022-LHYJ-02-0505-01,2019-LHYJ-01-0.000211-18）
长江汛期总磷时空分异特征及其减污降碳途径研究(2024A009) （2024A009）
