农业资源与环境学报2025，Vol.42Issue(6)：1444-1456,13.DOI:10.13254/j.jare.2025.0419
粮食安全省长责任制降低了农业碳排放吗?
Does the provincial governor responsibility system for food security reduce agricultural carbon emissions?Based on the difference-in-differences model
摘要
Abstract
To evaluate the environmental effects of provincial governor responsibility system for food security(PGRSFS),this study used panel data from 31 provinces across China and employed the difference-in-differences method to empirically examine the impact of PGRSFS on agricultural carbon emissions.The findings were as follows:first,the implementation of PGRSFS helped reduce agricultural carbon emissions.Compared with non-grain main producing areas,this policy could make the intensity and density of agricultural carbon emissions in grain main producing areas decrease by an average of 0.037 and 0.060 units,respectively.Second,mechanism analysis showed that PGRSFS reduced carbon emissions through three channels:the adjustment effect of planting structure,the scale effect of grain production,and the induced effect of fiscal support for agriculture.Third,heterogeneity analysis indicated that the carbon reduction effect of PGRSFS was more pronounced in eastern regions,areas with fewer cultivated land endowments,and regions with higher urbanization levels.Fourth,further analysis revealed that PGRSFS significantly improved carbon emission efficiency.Based on this,it is necessary to strictly implement the assessment system for the food security responsibility system,guide the transformation of planting structures,promote large-scale grain production,and increase fiscal investment in agriculture,so as to achieve carbon emission reduction while ensuring food security.关键词
粮食安全省长责任制/粮食主产区/农业碳排放/碳排放效率/双重差分法Key words
provincial governor responsibility system for food security/major grain-producing area/agricultural carbon emission/carbon emission efficiency/difference-in-differences method分类
环境科学引用本文复制引用
钱龙,寇双慧,王锦良..粮食安全省长责任制降低了农业碳排放吗?[J].农业资源与环境学报,2025,42(6):1444-1456,13.基金项目
国家自然科学基金面上项目(72273061) （72273061）
全国粮食和物资储备青年拔尖人才服务行业需求自主选题项目 （）
北方干旱半干旱耕地高效利用全国重点实验室2025年开放课题(EUAL-2025-09) National Natural Science Foundation General Program(72273061) （EUAL-2025-09）
National Food and Strategic Reserves Administration Young Elite Researchers Initiative （）
Open Project of State Key Laboratory of Efficient Utilization of Arable Land in China,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences(EUAL-2025-09) （EUAL-2025-09）
