[1]贺 赟,杨爱江,陈蔚洁,等.西南喀斯特山区典型流域农业非点源污染负荷及分布特征[J].水土保持研究,2022,29(01):148-152.
　HE Yun,YANG Aijiang,CHEN Weijie,et al.Research on Spatial Characteristics and the Load of Agricultural Non-Point Source Pollution in Karst Area of Southwestern China[J].Research of Soil and Water Conservation,2022,29(01):148-152.
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西南喀斯特山区典型流域农业非点源污染负荷及分布特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 29 期数: 2022年01期 页码: 148-152 栏目: 出版日期: 2022-02-20
Title:
Research on Spatial Characteristics and the Load of Agricultural Non-Point Source Pollution in Karst Area of Southwestern China
文章编号:
1005-3409(2022)01-0148-05
作者:
贺 赟1, 杨爱江1,2, 陈蔚洁3, 郭 悦1, 冯于航1, 宋 霞1
(1.贵州大学 资源与环境工程学院 喀斯特地质资源与环境教育部重点实验室, 贵阳 550025; 2.贵州喀斯特环境生态系统教育部野外科学观测研究站, 贵阳 550025; 3.贵州省材料产业技术研究院, 贵阳 550025)
Author(s):
HE Yun1, YANG Aijiang1,2, CHEN Weijie3, GUO Yue1, FENG Yuhang1, SONG Xia1
(1.College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China; 2.Science Park Development Co., Ltd., of Guizhou University, Guiyang 550025, China; 3.Guizhou Materials Industry Technology Research Institute, Guiyang 550014, China)
关键词:
输出系数模型;  农业非点源污染;  北盘江;  TN;  TP
Keywords:
export coefficient model;  agriculture non-point source pollution;  Beipan River;  TN;  TP
分类号:
X522
文献标志码:
A
摘要:
为更精确地估算西南喀斯特山区的北盘江流域(晴隆段)农业非点源污染情况,引入降雨、地形因子(α,β)对经典的输出系数模型(ECM)进行了研究。结果显示:2017年北盘江流域(晴隆段)农业非点源氮、磷污染负荷分别是2 582.00 t和246.74 t。两者分布特征基本一致,呈现分布不均的特质:污染负荷局部集中,坡度较高和人口密度大的区域负荷量较高。TN,TP负荷中不同农业非点源的贡献率基本一致,为畜禽养殖>土地利用类型>农村生活。与实际观测值比较,改进的输出系数模型(IECM)对TN,TP负荷的估算值的平均相对偏差分别为9.80%和2.09%。综上,IECM提高了模型模拟的精度,可以为喀斯特山区非点源污染负荷的估算提供参考。
Abstract:
In order to more accurately estimate the current status of agricultural non-point source pollution(ANSP)in the Beipan River Basin(Qinglong Section)located in southwestern China, an improved export coefficient model(IECM)was developed by integrating the precipitation and terrain impact factor into the conventional export coefficient model. The results indicated that the loads of TN and TP of the agricultural non-point source pollutants in the research area in 2017 were 2 582.00 t and 246.74 t, respectively; the distribution characteristics of the two are basically the same, showing the characteristics of uneven distribution: Pollution load is locally concentrated. And then, the load is higher in areas with higher slopes and high population densities; the contribution rates of different ANSP to TN and TP loads provided the similar trend and deceased in the order: livestock>land use>rural life; compared with the actual observations, the average relative deviations of the IECM estimates of TN and TP loads were 9.80% and 2.09%, respectively, which indicated that the IECM improved the accuracy of model simulation and provided reference information of model selection for the estimation of ANSP in the karst area ofsouthwestern China.

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备注/Memo

收稿日期:2020-04-11 修回日期:2020-05-11
资助项目:贵州省国内生态学一流学科建设项目(GNYL[2017]007); 贵州省科技计划项目(黔科合基础[2020]1Y195); 贵州大学课题项目(700714182214)
第一作者:贺赟(1995—),男,贵州遵义人,硕士研究生,主要从事环境污染控制研究。E-mail:574422329@qq.com
通信作者:杨爱江(1973—),男,贵州毕节纳雍人,研究生导师,教授,主要从事环境污染控制研究。E-mail:Yangaij8818@sina.com

更新日期/Last Update: 2022-02-20