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建设用地资源空间集聚对减污降碳协同的影响机制

The impact mechanism of spatial agglomeration of construction land resources on the synergistic reduction of pollutants and CO2

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空间集聚是地理学的一个重要概念.研究建设用地资源空间集聚对减污降碳协同的影响,为省级政府协同推进减污降碳提供地理学方案.本文首先构建了以建设用地空间集聚为核心的Kaya恒等式与ImPACT恒等式,作为研究的理论分析框架,然后借鉴格鲁贝尔—劳埃德指数测算了减污降碳协同水平,并用赫芬达尔指数等识别省域建设用地空间集聚,借助中国省级面板数据,检验了两者的关系.研究发现:①建设用地规模对减污降碳产生负向协同效应,但其空间集聚有助于产生减污降碳正向协同效应.②建设用地空间集聚一方面通过技术创新减污,另一方面通过能源节约降碳;而技术创新在建设用地空间集聚促进降碳的过程中发挥一定的遮掩效应.③建设用地空间集聚对减污、降碳及减污降碳协同分别呈"U"型、倒"U"型和"U"型的驱动过程,但促进作用占主导,当建设用地空间集聚达到一定水平,将产生减污降碳正向协同效应.④建设用地空间集聚对减污降碳协同的影响具有地区异质性.在东中部地区有助于降碳,但未实现减污,进而未产生减污降碳正向协同效应,西部地区有助于减污和降碳,并产生了减污降碳正向协同效应.
Spatial agglomeration is an important concept in geography.The study examines the effect of spatial agglomeration of construction land resources(SACL)on the synergistic reduction of pollutants and CO2(SRPC),which provides a geographical scheme for provincial governments in this aspect.In this paper,Kaya identity and ImPACT identity are first constructed based on the SACL,which is the theoretical analysis framework of this study.Then,the Gruebel-Lloyd index is used to measure the level of SRPC,and the Herfindahl index is used to identify the degree of SACL in provincial-level regions.The relationship between SACL and SRPC is tested using China's provincial panel data.The findings are as follows:(1)The scale of construction land has a negative effect on the SRPC,but the SACL helps to play a positive role.(2)SACL reduces pollutants emissions through technological innovation and reduces CO2 emissions through energy conservation.Additionally,technological innovation plays a certain masking effect in the process of SACL to promote CO2 emission reduction.(3)SACL has a U-shaped,inverted U-shaped,and U-shaped driving process on pollutant reduction,carbon reduction,and synergic emission reduction,respectively.But overall,the promotion effect is dominant,and only when SACL reaches a certain level can the positive synergistic effect be produced.(4)SACL has a regional heterogeneity effect on SRPC.In the eastern and central regions,SACL helps to reduce CO2 emissions but does not achieve the goal of reducing pollution,thus does not produce a positive effect on SRPC.In the western region,SACL is beneficial for reducing emissions of pollutants and CO2,resulting in a positive effect on SRPC.

construction landspatial allocationspatial agglomerationsynergistic reduction of pollutants and CO2Kaya identityIMPACT identity

钟顺昌、焦怡萌、闫程莉、汪文竹

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山西财经大学资源型经济转型发展研究院,太原 030006

山西财经大学财政与公共经济学院,太原 030006

建设用地 空间配置 空间集聚 减污降碳协同 Kaya恒等式 ImPACT恒等式

国家自然科学基金国家自然科学基金国家自然科学基金教育部人文社会科学研究项目

72274114722041517180409918YJC790236

2024

10.11821/dlxb202403009

地理学报
中国地理学会 中国科学院地理科学与资源研究所

地理学报

CSTPCDCSSCICHSSCD北大核心
影响因子：3.3
ISSN：0375-5444
年,卷(期)：2024.79(3)
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