中国生态农业学报（中英文）2023，Vol.31Issue(12)：2022-2032,11.DOI:10.12357/cjea.20230353
土地整治对农业碳排放的影响研究
Research on the effects of rural land consolidation on agricultural carbon emissions:a quasi-natural experiment based on the high-standard farmland construction policy
摘要
Abstract
Under the carbon emission pattern of"carbon peak and carbon neutral",agricultural carbon emissions,as one of the main sources of greenhouse gases,have become a key area for emission reduction.High-standard farmland construction is an important measure for promoting green,low-carbon,and high-quality agricultural development.An in-depth investigation of the effects and mechanisms of high-standard farmland construction policies on agricultural carbon emissions can provide an empirical basis for op-timizing policy formulation and reducing agricultural carbon emissions.This is of great significance in promoting the development of low-carbon agriculture.Based on the theories of scale economy and division of labor,this study constructed a theoretical model of"high-standard farmland construction-agrochemical input intensity/socialized service-agricultural carbon emission".Based on panel data from 30 provinces in China from 2007 to 2017,this study analyzed the effect and mechanism of the high-standard farmland con-struction policy on agricultural carbon emissions using a continuous differences-in-differences approach(DID)and mediation effect model.By measuring the agricultural carbon emissions of each province,this study found that national agricultural carbon emissions showed an inverted U-shaped trend,rising at the beginning,then declining,and peaking in 2015.Regions such as Henan,Shandong,Hebei,Jiangsu,and Anhui are at the forefront of agricultural carbon emissions nationwide,whereas regions such as Beijing,Shang-hai,Tianjin,Hebei,and Shandong have higher rates of agricultural carbon emission reduction.The dynamic estimation results showed that the carbon reduction of the high-standard farmland construction policy had a lag effect,and the carbon reduction effect appeared in 2013 and continued to increase gradually.The results of the benchmark regression showed that a high-standard farmland construc-tion policy significantly suppressed agricultural carbon emissions.On average,when all other conditions remained unchanged,imple-menting a high-standard farmland construction policy reduced agricultural carbon emissions significantly,i.e.,by 10.1％.Robustness tests were conducted using the approach of substituting variables and considering the interference of other relevant policies.The res-ults confirmed the positive effect of the high-standard farmland construction policy on reducing agricultural carbon emissions.The results of the mechanism analysis showed that agricultural chemical input intensity and agricultural socialized services played mediat-ing roles in reducing agricultural carbon emissions through the construction of high-standard farmland.The construction of high-standard farmlands suppressed agricultural carbon emissions,mainly by reducing agricultural chemical input intensity and improving agricultural socialized services.Heterogeneity analysis revealed that the carbon reduction effect of the high-standard farmland con-struction policy mainly occurred in provinces with a high degree of land transfer and in non-food-producing areas.In contrast,it did not have a corresponding carbon reduction effect in provinces with a low degree of land transfer and in food-producing areas.There-fore,the government should strengthen the construction of high-standard farmlands and differentiate the implementation of high-standard farmland construction policies according to local conditions and classifications to give full play to the emission reduction ef-fect.In addition,the government should pay great attention to the role of agricultural chemicalization and socialized agricultural ser-vices in carbon reduction effects.关键词
土地整治/农业碳排放/高标准农田建设政策/双重差分法Key words
Land consolidation/Agricultural carbon emissions/High-standard farmland construction policy/Differences-in-differ-ences approach分类
管理科学引用本文复制引用
熊飞雪,赵星磊,郭子毅,朱述斌..土地整治对农业碳排放的影响研究[J].中国生态农业学报（中英文）,2023,31(12):2022-2032,11.基金项目
国家自然科学基金项目(71840013)、2021年江西省富硒农业专项(JXFXZD-2021-02)和江西农业大学经济管理学院2023年研究生创新专项资助项目(JG2023013)资助 This study was supported by the National Natural Science Foundation of China(71840013),Jiangxi Province Selenium-Rich Agriculture Special Project 2021(JXFXZD-2021-02)and 2023 Graduate Student Innovation Special Fund Project,School of Economics and Management,Jiangxi Agri-cultural University(JG2023013). （71840013）
