摘要
蓝绿空间作为城市生态空间的基本骨架与生态安全的重要保障载体,因其显著的碳汇潜力与增汇效能,在城市减排增汇体系中具有不可替代的生态价值。在积极推进国家"双碳"战略目标的背景下,揭示蓝绿空间碳汇时空演变规律及其驱动机制,构建碳汇提升路径,已成为区域可持续发展研究的重要命题。以长株潭城市群为研究对象,基于2008-2022年土地利用数据和碳密度系数,系统分析蓝绿空间碳汇时空演变特征及驱动机制。研究发现:(1)区域碳汇总量均值为151.56万t,整体呈现波动趋势。其中,蓝色空间碳汇量在研究期内平均值为1.34万t,整体呈现持续下降趋势,绿色空间作为主导性碳汇来源,其动态变化趋势与区域碳汇总量的演变特征呈现显著一致性;(2)碳汇量的变动保持了一定程度的稳定性,空间分析显示其空间格局呈现"东北-西南"轴向分布,其中西南区域的空间影响力在研究期内呈现显著增强态势;(3)路径分析揭示土地利用程度和人口密度分别主导了两条核心碳汇提升路径,且其变动受到多因素组态影响,其中城市开发强度与经济水平的协同作用、人口聚集与经济发展的交互效应对碳汇影响尤为显著。
As the basic skeleton of the urban ecological space and an important carrier of ecological security,blue-green space has irreplaceable ecological value in the urban emission reduction and sink enhancement system due to its significant carbon sink potential and sink enhancement efficiency.Under the background of positive response to the national"carbon peaking and carbon neutrality"strategic goal,revealing the spatial and temporal evolution law of carbon sinks in blue-green space and its driven mechanism,as well as constructing the path of carbon sink enhancement,has become an important proposition in the study of regional sustainable development.This study takes Changzhutan city cluster as the research object,and analyzes the spatial and temporal evolution characteristics of the blue-green space carbon sink and its driving mechanism based on the land use data and carbon density coefficients from 2008 to 2022.It is found that:(1)the average value of the total regional carbon sink is 151.56million t,with an overall fluctuating trend.The mean value of the blue space carbon sink in the study period was 1.34 million t,showing a continuous downward trend,and the green space,as the dominant source of carbon sinks,showed a significant consistency between its dynamic trend and the evolution of the total regional carbon sinks;(2)the changes in carbon sinks maintained a certain degree of stability,and the spatial analysis showed that the spatial pattern showed a"northeast-southwest"axial distribution,of which the spatial and temporal evolution characteristics and driving mechanisms were the same as those of the regional carbon sinks.The spatial analysis shows that its spatial pattern shows a"northeast-southwest"axial distribution,in which the spatial influence of the southwest region shows a significant enhancement during the study period;(3)the path analysis reveals that the degree of land use and the population density dominate the two core paths of carbon sink enhancement,and their changes are affected by multi-factors,among which the synergistic effect of the intensity of urban development and the level of the economy,and the interaction effect of the population aggregation and the economic development are particularly significant to the carbon sinks.The synergistic effect between urban development intensity and economic level,and the interactive effect between population concentration and economic development have a particularly significant impact on carbon sinks.
作者
刘亦文
李桢枭
颜建军
LIU Yiwen;LI Zhenxiao;YAN Jianjun(International Business School,Hunan University of Technology and Business,Changsha 410205,China;School of Resource and Environment,Hunan University of Technology and Business,Changsha 410205,China;School of Economics and Trade,Hunan University of Technology and Business,Changsha 410205,China)
出处
《生态学报》
北大核心
2025年第15期7349-7361,共13页
Acta Ecologica Sinica
基金
国家社会科学基金一般项目(24BTJ032)。
关键词
长株潭城市群
蓝绿空间
碳汇
模糊集定性比较分析(fsQCA)
changsha zhuzhou xiangtan urban agglomeration
blue-green space
carbon sink
fsQCA(fuzzy set qualitative comparative analysis)
