“合村并居”会减少县域碳排放吗?  

Can“Village Merging”Reduce Carbon Emissions of County Level?

作　　者：王学渊[1] 苏子凡 Wang Xueyuan;Su Zifan(School cf Economics,Zhejiang Gongshang University 9 Hangzhou 310018)

机构地区：[1]浙江工商大学经济学院,杭州310018

出　　处：《浙江社会科学》2022年第3期20-33,156,157,共16页Zhejiang Social Sciences

基　　金：浙江省科技厅重点软科学研究项目“‘山海协作工程’对山区农户可持续生计的提升机制与推进策略研究”(2022C25010);浙江省宣传思想文化青年英才支持项目“城乡供水与环境卫生服务一体化改善策略研究”(1050QBN0121002G)的阶段性研究成果。

摘　　要：在国家"双碳"目标和绿色发展战略下,"合村并居"作为推进县域新型城镇化建设的重要举措,在县域绿色低碳发展中的作用亟待探究。本文基于2009—2017年中国县级层面面板数据,综合利用双向固定效应回归模型和工具变量方法,系统考察"合村并居"对县域碳排放强度的影响效应,进一步从人口城镇化、土地资源集约利用、公共财政支出有效利用、工业集聚四个方面阐释"合村并居"影响县域碳排放强度的作用机制。研究结果表明:(1)"合村并居"在全国范围内显著降低了县域层面的单位GDP二氧化碳排放量,分区域看,"合村并居"的县域减碳效应在中、西部地区更为明显,而在东部和东北部地区统计上均不显著;(2)"合村并居"主要通过提升县域的土地资源和公共财政支出集约有效利用程度实现减碳效应,人口城镇化和工业集聚的中介作用并不显著;(3)村庄数量较密集、经济集聚水平较低区县的"合村并居"县域减碳效应更为显著。本文研究表明"合村并居"的县域减碳效应具有较强的区域异质性和一定的局限性。在"合村并居"进程中,因地制宜、分类施策、整体规划村居绿色建设、加强土地资源的集约化利用和公共财政资源的有效投放,才能促进其在县域绿色低碳发展中的积极作用。Under the national goals of"emission peak and carbon neutrality"and green development strategy,"Village Merging"as an important action to promote the new-type urbanization at the county-level,is urgently needed to explore its role in the low-carbon development.Based on the panel data from 2009 to 2017 at the county level in China,this paper empirically examines the effect of"Village Merging"on carbon emissions intensity by employing two-way fixed effect model and instrument variable method.Furthermore,this paper explores the effect mechanism from four aspects:population urbanization,intensive utilization rate of land resources,effective utilization rate of public financial expenditure and industrial agglomeration.The findings can be summarized in three perspectives:Firstly,"Village Merging"had a significant effect in reducing carbon emissions intensity,and this effect was mainly occurred in central and western region by not significantly in eastern and northeastern region.Secondly,mechanism investigation indicates this reduction effect was mainly realized by improving the intensive and effective use of land resources and public financial expenditure,which were both positively associated with"Village Merging".While the mediation effect of"Village Merging"on population urbanization and industrial agglomeration was not significant.Thirdly,further analysis highlights the importance of heterogeneity under different village numbers and economic agglomeration level.Specifically,we find"Village Merging"can significantly reduce carbon emissions intensity in counties with more villages number or lower economic agglomeration level.Therefore,it is necessary for local government to improve efficiency of land use and optimize the model of public investment in the process of"Village Merging".While focusing on regional difference,local government should give priority to reducing carbon emissions intensity in areas with a greater number of villages or a lower agglomeration degree.

关 键 词：“合村并居” 碳排放强度 减碳效应 县域 

分 类 号：F127[经济管理—世界经济] X321[环境科学与工程—环境工程]