长江流域资源与环境 >> 2021, Vol. 30 >> Issue (2): 472-483.doi: 10.11870/cjlyzyyhj202102021

• 农业发展 • 上一篇    下一篇

重金属污染耕地修复治理试点对农户生产的溢出效应研究

周力, 魏政, 应瑞瑶*   

  1. (南京农业大学经济管理学院,江苏 南京 210095)
  • 出版日期:2021-02-20 发布日期:2021-03-19

Study on the Spillover Effect of Pilot to Rehabilitate Cultivated Land Contaminated by Heavy Metals on Farmers’ Production

ZHOU Li, WEI Zheng, YING Rui-yao   

  1. (College of Economics and Management,Nanjing Agricultural University,Nanjing 210095,China)
  • Online:2021-02-20 Published:2021-03-19

摘要: 基于2017年在江西和湖南两省的农户调研数据,实证分析重金属污染耕地修复治理试点对试点周边农户生产行为的影响,并检验试点溢出作用对农户生产行为的异质性影响。研究发现:重金属污染治理试点的启动,引起周边农户水稻种植面积与水稻面积占比减少,但通过技术溢出使农户对耕地修复技术的采用量提升;进一步分析发现,靠近治理试点的区域,风险厌恶者减少水稻种植,但增加技术施用量治理污染;时间偏好低的农户等待政策试点范围扩大,不会改变水稻种植规模但会减少治理技术投入;随着试点间隔时间的扩大,位于试点区域周边的农户增加水稻种植面积,但减少治理技术采用量。研究结论为我国耕地重金属污染的治理与治理试点范围的扩展提供了有益的借鉴。

Abstract: Based on the survey data of farmers in Jiangxi and Hunan provinces in 2017, this paper empirically analyzed the impact of heavy metal contaminated cultivated land rehabilitation pilot project on the production behavior of surrounding farmers, and examines the heterogeneity of the its spillover effect on the production behavior of farmers. The results show that the launch of the pilot project of heavy metal pollution treatment causes the reduction of the rice planting area and its proportion among surrounding farmers. But the farmers’ adoption of cultivated land restoration technology is increased through technology spillovers. Further analysis finds that in areas close to the pilots of risk management, risk-averse farmers reduced rice cultivation, but increased the application of technology to control pollution. Farmers with lower time preference waited for policy pilots to be expanded, which would not change the scale of rice cultivation but would reduce the investment in treatment technology. Farmers located around the pilot area increased the rice planting area, but reduced the amount of treatment technology adopted over time. The conclusions of the study provide a meaningful reference for the treatment of heavy metal pollution in cultivated land in China and the expansion of the pilot experiment.

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