广东水利水电Issue(11)：30-34,40,6.
韩江流域重要水文站总磷趋势分析和2016-2021年通量估算
Analysis of Total Phosphorus Trends at Key Hydrological Stations in the Hanjiang River Basin and Estimation of Fluxes from 2016 to 2021
吴海斌1
作者信息
- 1. 广东省水文局梅州水文分局,广东 梅州 514071
- 折叠
摘要
Abstract
Eutrophication of water bodies in the Hanjiang River Basin has become one of the key risks in the basin,and phosphorus is the most critical limiting factor for algal growth.The Seasonal Kendall test and LOADEST statistical model were employed,along with water quality and flow data compiled by hydrological authorities,to analyze the variation trends of total phosphorus concentrations and estimate pollution fluxes at key hydrological stations within the basin.The results indicate that the trend of total phosphorus concentration in the basin reversed in 2016,shifting from a significant upward trend to a highly significant downward trend.Verification confirmed that the LOADEST statistical model is applicable for estimating total phosphorus at the Hengshan Hydrological Station.Calculations show that the average total phosphorus flux at this station from 2016 to 2021 was 973.3 tons.Considering that 2021 was an extremely dry year,with the inflow to the Hengshan Hydrological Station decreasing by 76%,the total phosphorus flux caused by point sources at this station was estimated to be 93.3 tons.Analyzing the trend changes of key nutrient factors and estimating pollutant fluxes in the basin can help better grasp the temporal and spatial distribution patterns of pollutants,provide support for comprehensive basin management,and thus hold significant reference value.关键词
总磷/趋势分析/LOADEST模型/污染通量估算Key words
total phosphorus/trend analysis/LOADEST model/pollution flux estimation分类
资源环境引用本文复制引用
吴海斌..韩江流域重要水文站总磷趋势分析和2016-2021年通量估算[J].广东水利水电,2025,(11):30-34,40,6.
