生态学报2025，Vol.45Issue(11)：5246-5262,17.DOI:10.20103/j.stxb.202410092442
成渝城市群县域碳平衡与人类活动强度的关联性
County-based study on the correlation between carbon balance and human activity intensity in the Chengdu-Chongqing City Cluster
摘要
Abstract
Carbon balance can signify the alignment or harmonization of regional carbon emissions and carbon absorption,both quantitatively and qualitatively.Human activities exert varying influences and varying degrees of impact on the regional carbon cycle.Investigating the correlation between these factors is crucial for addressing global climate change,realizing regional 'double carbon' objectives,and devising regional ecological compensation mechanisms.This study takes the Chengdu-Chongqing city cluster as the research object at the county scale.Utilizing multi-source remote sensing and statistical data,this study analyzes the spatiotemporal evolution of carbon balance and the intensity of human activities,and examines the correlation between carbon balance and human activity intensity within the study area using bivariate spatial autocorrelation and the Geodetector method.The findings indicated that:①Throughout the study period,regions with high carbon balance pressure index(CBPI)values displayed a 'double C' shaped distribution,centered around Chengdu and Chongqing,extending in a northeast-southwest direction and diminishing gradually,while the southwestern edge of the Sichuan Basin represented a low CBPI value area.CBPI has obvious spatial heterogeneity and aggregation,and each district and county is dominated by carbon surplus and CBPI is mostly declining.② During the study period,the human activity intensity(HAI)of Chengdu-Chongqing city cluster increased significantly(21.2％/a),and gradually evolved from the"dual-core axis circle"city cluster to the"interconnected network"city cluster.③A robust positive spatial correlation exists between CBPI and HAI within the Chengdu-Chongqing city cluster.The bivariate correlation coefficient,at 0.675,suggests that both exhibit pronounced similar clustering patterns,predominantly 'low-low' and 'high-high' clusters.④The dominant factors of carbon balance in Chengdu-Chongqing city cluster are mainly human activities,among which economic level and population density are the dominant factors,and NDVI is the main contribution factor of natural factors.The research results are helpful for Chengdu-Chongqing city cluster to achieve the goal of"double carbon,"and provide theoretical reference and practical reference for relevant urban planning and development.关键词
碳平衡/人类活动强度/关联性/地理探测器/成渝城市群Key words
carbon balance/human activity intensity/correlation/Geodetector/Chengdu-Chongqing City Cluster引用本文复制引用
刘欣怡,马柔,张正勇,刘琳,张明羽,高煜,曹宇,张雪莹,陈泓瑾,余凤臣..成渝城市群县域碳平衡与人类活动强度的关联性[J].生态学报,2025,45(11):5246-5262,17.基金项目
国家自然科学基金项目(41781108) （41781108）
