改进输出系数模型在农业面源氮磷污染物负荷估算中的应用  

Application of modified export coefficient model to estimate nitrogen and phosphorus pollutants from agricultural non-point source

作　　者：赵筱媛 张仲伟 刘晓洁 张倩 王凌青 陈浩 熊光城 刘裕如 唐强 阮华达 ZHAO Xiaoyuan;ZHANG Zhongwei;LIU Xiaojie;ZHANG Qian;WANG Lingqing;CHEN Hao;XIONG Guangcheng;LIU Yuru;TANG Qiang;RUAN Huada Daniel(Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;Changjiang Institute of Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China;Environmental Science Program,Beijing Normal University-Hong Kong Baptist University United International College,Zhuhai 519080,Guangdong,China;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China [2]Changjiang Institute of Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China [3]Environmental Science Program,Beijing Normal University-Hong Kong Baptist University United International College,Zhuhai 519080,Guangdong,China [4]College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Geographical Sciences》2023年第10期2094-2112,共19页地理学报（英文版）

基　　金：Key Research and Development Program of Hubei Province,No.2020BCA073;Independent Innovation Research Program of Changjiang Institute of Survey,Planning,Design and Research Co.,Ltd.,No.CX2019Z05。

摘　　要：There is a great uncertainty in generation and formation of non-point source(NPS)pollutants,which leads to difficulties in the investigation of monitoring and control.However,accurate calculation of these pollutant loads is closely correlated to control NPS pollutants in agriculture.In addition,the relationships between pollutant load and human activity and physiographic factor remain elusive.In this study,a modified model with the whole process of agricultural NPS pollutant migration was established by introducing factors including rainfall driving,terrain impact,runoff index,leaching index and landscape intercept index for the load calculation.Partial least squares path modeling was applied to explore the interactions between these factors.The simulation results indicated that the average total nitrogen(TN)load intensity was 0.57 t km-2 and the average total phosphorus(TP)load intensity was 0.01 t km-2in Chengdu Plain.The critical effects identified in this study could provide useful guidance to NPS pollution control.These findings further our understanding of the NPS pollution control in agriculture and the formulation of sustainable preventive measures.

关 键 词：modified export coefficient model pollution load non-point source pollution total nitrogen total phosphorus 

分 类 号：X71[环境科学与工程—环境工程] X52