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中国农学通报 ›› 2023, Vol. 39 ›› Issue (34): 105-113.doi: 10.11924/j.issn.1000-6850.casb2022-0915

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

安徽省农业面源污染的时空演变及影响因素研究——基于空间计量模型

卢辞(), 李明鸿, 张俊   

  1. 安徽财经大学经济学院,安徽蚌埠 233030
  • 收稿日期:2022-11-08 修回日期:2023-06-09 出版日期:2023-12-05 发布日期:2023-11-30
  • 作者简介:

    卢辞,男,1964年出生,研究员,硕士,主要研究方向为生态环境价格、人口资源与环境。通信地址:233030 安徽省蚌埠市曹山路962号 安徽财经大学龙湖东校区,E-mail:

  • 基金资助:
    安徽省教育厅人文社会科学研究项目“淮河生态经济带生态系统耦合适应性研究”(SK2019ZD41); 安徽省社会科学创新发展研究课题(2021CX061)

Research on the Temporal and Spatial Evolution and Influencing Factors of Agricultural Non-point Source Pollution in Anhui Province: Based on a Spatial Econometric Model

LU Ci(), LI Minghong, ZHANG Jun   

  1. School of Economics, Anhui University of Finance and Economics, Bengbu, Anhui 233030
  • Received:2022-11-08 Revised:2023-06-09 Published-:2023-12-05 Online:2023-11-30

摘要:

安徽省是中国重要的农业生产基地,农业面源污染是影响安徽生态安全的重要制约因素。采用单元调查法和空间计量法分析2011—2020年安徽省农业污染现状和空间相关性,运用空间杜宾模型探究影响因素。研究发现:(1)2011—2020年安徽省农业面源污染排放总量呈U型,COD、TP排放量与总量相似,TN排放量呈下降趋势。(2)2011、2020年安徽省16个城市的农业面源污染排放总量空间分异特征明显,2020年各市农业面源污染排放总量低于2011年。(3)以不同的2种空间权重矩阵来测算安徽省农业面源污染排放量的空间相关性,证明存在空间正相关性,同质溢出性效应显著。(4)利用空间杜宾模型验证非农业就业比例对农业面源污染起抑制作用,农户家庭收入对农业面源污染起促进作用,二者都有显著的空间溢出效应,并且后者的促进作用大于前者的抑制作用。

关键词: 农业面源污染, 莫兰指数, 空间杜宾模型, 空间溢出, 非农业就业, 农户家庭收入

Abstract:

Anhui Province is an important agricultural production base in China, and agricultural non-point source pollution is a major restrictive factor affecting the ecological security of Anhui. The unit survey method and spatial econometric method were used to analyze the current situation and spatial correlation of agricultural pollution in Anhui Province from 2011 to 2020, and the spatial Durbin model was used to explore the influencing factors. The study found that: (1) the total amount of agricultural non-point source pollution in Anhui Province from 2011 to 2020 was U-shaped, the COD and TP emissions were similar to the total, and the TN emission showed a downward trend. (2) There were clear spatial differences in the overall level of non-point source pollution in the 16 cities, and the overall level of non-point source pollution in agriculture was better in each city in 2020. (3) Using two different spatial weight matrices to measure agricultural non-point source pollution in Anhui Province, the spatial correlation of emissions showed that there was a positive spatial correlation, indicating a significant effect of homogeneous variation. (4) The spatial Durbin model was used to verify that the proportion of non-agricultural employment inhibited agricultural non-point source pollution, and the household income of farmers promoted agricultural non-point source pollution. Both have significant spatial effects, with the latter having a greater facilitating effect than the inhibiting effect of the former.

Key words: agricultural non-point source pollution, Moran index, spatial Durbin model, spatial spillover, non-agricultural employment, farm household income