摘要
针对农业面源污染特征无法直观监测问题,以山东省菏泽市洙赵新河流域为研究区域,构建SWAT模型对研究区径流量及总氮、总磷负荷量进行模拟研究,分析农业面源污染的时空分布特征,识别农业面源污染关键源区及农业面源污染类型。结果表明:率定和验证期的径流、总氮、总磷的决定系数和纳什系数均能满足SWAT模型精度要求;研究区农业面源污染负荷年际变化较小,农业面源污染主要集中发生在丰水期,即7—10月份,污染物负荷量在枯水期与平水期呈现明显的减小趋势;流域中下游的污染物负荷量比上游的大,农业面源污染的关键源区集中在流域中下游及流域南部;畜禽养殖为主要面源污染来源,污染物入河量占全部入河污染物总量的85.16%。
Aiming at the problem that the characteristics of agricultural non-point source pollution can not be directly monitored,taking the Zhuzhaoxin River Basin in Heze city,Shandong province as the research area,SWAT model was constructed to simulate the runoff,total nitrogen and total phosphorus load in the study area,the spatial-temporal distribution characteristics of agricultural non-point source pollution were analyzed,and the key source areas and types of agricultural non-point source pollution were identified.The results show that the determination coefficients and Nash coefficients of runoff,total nitrogen and total phosphorus in the calibration and verification periods can meet the accuracy requirements of SWAT model.The agricultural non-point source pollution load in the study area has little inter-annual change,and the agricultural non-point source pollution mainly occurs in the wet season,that is,from July to October.The pollutant load shows an obvious decreasing trend in the dry season and the normal season.The pollutant load in the middle and lower reaches of the basin is larger than that in the upper reach.The key source areas of agricultural non-point source pollution are concentrated in the middle and lower reaches of the basin and the southern part of the basin.Livestock and poultry farming is the m ain non-point source of pollution,and the amount of pollutants into the river accounts for 85.16%of the total amount of pollutants.
作者
崔滢
孙慧中
徐立荣
CUI Ying;SUN Huizhong;XU Lirong(School of Water Concervancy and Environment,University of Jinan,Jinan 250022,Shandong,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2024年第1期78-86,共9页
Journal of University of Jinan(Science and Technology)
基金
山东省自然科学基金项目(ZR2021ME145)
菏泽市生态环境局委托项目(SDGP371700202002000099)。
关键词
农业面源污染
SWAT模型
径流
总氮
总磷
洙赵新河流域
agricultural non-point source pollution
SWAT model
runoff
total n itrogen
total phosphorus
the Zhuzhaoxin River Ba sin
作者简介
第一作者:崔滢(1997—),女,辽宁庄河人。硕士研究生,研究方向为水文学及水资源。E-mail:357200236@qq.com;通信作者:徐立荣(1976—),女,河北沧州人。教授,博士,研究方向为水文学及水资源。E-mail:stu_xulr@ujn.edu.cn。
