| 王菲,祝铭,周旌,王玉,冯爱萍,逯颖,王琦,谢成玉.河北省2023年农业面源总磷污染评估与典型超标断面影响分析[J].农业环境科学学报,2024,43(12):2786-2795. |
| 河北省2023年农业面源总磷污染评估与典型超标断面影响分析 |
| Evaluating agricultural non-point source phosphorus pollution in Hebei Province in 2023 and analyzing its impact on typical exceedance sections |
| 投稿时间：2024-10-13 |
| DOI：10.11654/jaes.2024-0949 |
| 中文关键词: 农业面源污染 总磷 DPeRS模型 |
| 英文关键词: agricultural non-point sources pollution total phosphorus DPeRS model |
| 基金项目:河北省农村、农业面源监测项目（HBSSTHJJCZX-2024-0005） |
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| 中文摘要: |
| 为了解和掌握农业面源污染对监测断面超标的贡献，研究河北省2023年农业面源总磷污染情况，并深入探究其与典型超标断面之间的关系，为河北省农业面源总磷污染的精准防治和水环境改善提供科学的数据支撑。基于遥感分布式面源污染估算模型（DPeRS模型），构建2023年河北省农业面源污染30 m空间分辨率数据库，解析河北省农业面源污染排放和入河负荷的空间特征，识别农业面源污染优控单元结果，同时基于水质监测数据提取省内典型总磷超标断面，结合优控单元分析农业面源总磷污染对总磷超标断面的影响。结果表明：全省2023年农业面源总磷污染排放量为1.33万t，入河量为0.15万t，整体呈现南高北低的趋势，其评估精度高于80%；总磷农业面源污染优控单元面积占优控单元总面积的40.6%，需重点针对邯郸市、保定市和秦皇岛市等区域开展源头和入河过程协同优先控制措施；2023年总磷浓度超标频次较多的3个典型断面中，码头李断面总磷超标主要受农田径流型农业面源总磷污染的排放和入河过程协同影响，南刘庄断面总磷超标主要受农田径流型和畜禽养殖型农业面源总磷污染的入河过程影响，南大港湿地入口断面受农业面源影响很小，该断面邻近渤海湾，需重点排查渤海湾附近水产养殖等点源的影响。研究表明，河北省典型超标断面总磷浓度超Ⅲ类水体标准频次与汛期农业面源污染易发有显著协同关系。 |
| 英文摘要: |
| To understand and grasp the contribution of agricultural non-point source pollution to the exceedance of monitoring sections, this study investigates the situation of agricultural non-point source total phosphorus pollution in Hebei Province in 2023, and deeply explores its relationship with typical exceedance sections, providing scientific data support for the precise prevention and control of agricultural non-point source total phosphorus pollution and the improvement of water environment in Hebei Province. Based on the remote sensing distributed non-point source pollution estimation model（DPeRS model）, a 30 m spatial resolution database of agricultural nonpoint source pollution in Hebei Province for the year 2023 was constructed. This study will analyze the spatial characteristics of agricultural non-point source pollution emissions and into river loads in Hebei Province, identify the priority control units for agricultural non-point source pollution, extract typical total phosphorus exceedance sections within the province based on water quality monitoring data, and analyze the impact of agricultural non-point source total phosphorus pollution on total phosphorus exceedance sections in conjunction with priority control units. The results show that the total emission of agricultural non-point source total phosphorus pollution in the province in 2023 was 13 300 tons, with a into river load of 1 500 tons, presenting a trend of being higher in the south and lower in the north, with an assessment accuracy higher than 80%; the area of the agricultural non-point source total phosphorus pollution priority control units accounts for 40.6% of the total area of priority control units, and it is necessary to focus on implementing source and into river process synergistic priority control measures in areas such as Handan City, Baoding City, and Qinhuangdao City; among the three typical sections with more frequent total phosphorus concentration exceedances in 2023, the total phosphorus exceedance at the Matouli section is mainly affected by the emission and into river process synergy of agricultural non-point source total phosphorus pollution from field runoff, the total phosphorus exceedance at the Nanliuzhuang section is mainly affected by the into river process of agricultural non-point source total phosphorus pollution from both field runoff and livestock breeding, and the impact of agricultural non-point source pollution on the Nan Dagang Wetland entrance section is minimal, with the section being close to the Bohai Bay, it is necessary to focus on investigating the impact of point sources such as aquaculture. The study indicates that there is a significant synergistic relationship between the frequency of total phosphorus concentration exceedances in typical exceedance sections in Hebei Province and the high incidence of agricultural nonpoint source pollution during the flood season. |
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