生态与农村环境学报2026，Vol.42Issue(3)：335-345,11.DOI:10.19741/j.issn.1673-4831.2025.0061
小东江流域水体与沉积物磷形态的季节性分布特征及其影响因素
Seasonal Distribution Characteristics and Influencing Factors of Phosphorus Forms in Water and Sediment of the Xiaodongjiang River
摘要
Abstract
The water and sediment phosphorus forms in small watershed are diverse and the influencing factors are com-plex,which is one of the challenges in the study of watershed water environment.Through field sampling,experimental processing and data analysis of Xiaodong River,this study aims to reveal the spatial and temporal distribution characteris-tics and influencing factors of phosphorus form in water and sediment of the basin during dry season and rainy season,and explore the relationship between water environment index and phosphorus form.The results showed that there was a signifi-cant difference in total phosphorus between the dry season and the rainy season(P<0.01).In the dry season,total phos-phorus gradually decreased from upstream to downstream,while in the rainy season,it was the opposite.Granular phos-phorus accounted for 70.8％of total phosphorus concentration in dry season and 68.9％in rainy season.The total phos-phorus in sediments increased gradually from the upper reaches to the lower reaches,and the phosphorus form in sediments was dominated by Fe-Al combined inorganic phosphorus.Redundancy analysis showed that water temperature and total ni-trogen greatly influenced the phosphorus morphology in water and sediment in dry season,while dissolved oxygen,chemi-cal oxygen demand and temperature influenced the phosphorus forms in rainy season.Spearman correlation analysis further revealed that there was a significant correlation between water phosphorus and sediment endogenous phosphorus in the dry season(P<0.05),and the endogenous influence was less in the rainy season,and phosphorus in the rainy season may mainly come from the input of rainfall runoff(including agricultural non-point source material,urban domestic sewage o-verflow and rural domestic sewage,etc.).The research provides important theoretical support for the water environment management of Xiaodongjiang River.关键词
水体和沉积物/磷形态/小东江/分布特征/旱季和雨季Key words
water and sediment/phosphorus forms/Xiaodongjiang River/distribution characteristics/dry and rainy season分类
资源环境引用本文复制引用
王检会,张秋英,李发东,王登超,王凡,李曹乐,曾令辉,纪东东..小东江流域水体与沉积物磷形态的季节性分布特征及其影响因素[J].生态与农村环境学报,2026,42(3):335-345,11.基金项目
中央级公益性科研院所基本科研业务费项目(2025YSKY-08) （2025YSKY-08）
茂名市茂南区生态环境保护治理总体技术服务项目(2023-DFKY-0105) （2023-DFKY-0105）
化州市环保管家驻点服务项目(2022-DFKY-0932) （2022-DFKY-0932）
