水土保持研究2026，Vol.33Issue(3)：289-298,321,11.DOI:10.13869/j.cnki.rswc.2026.03.002
广州市土地利用变化对碳代谢的影响
Impact of land use changes on carbon metabolism in Guangzhou
摘要
Abstract
[Objective]This study aims to reveal the impact of land use changes on carbon metabolism in Guangzhou and provide a reference for promoting the balance of its carbon metabolism system.[Methods]Vertical carbon metabolism in Guangzhou was calculated for the years 2000,2005,2010,2015,and 2020.A geographically weighted regression(GWR)model was used to explore the driving factors of vertical carbon metabolism.Ecological network analysis(ENA)was applied to analyze horizontal carbon metabolism,and GIS spatial analysis was combined to investigate the impact of land use changes(2000-2020)on carbon metabolism in Guangzhou.[Results](1)Carbon emissions in Guangzhou first increased and then decreased,with construction land having the greatest impact.Carbon adsorption by cultivated land and forest land tended to decrease,while adsorption by grassland,water bodies,and unused land remained relatively low and showed limited variation.Construction land area had a positive impact on vertical carbon metabolism,and the effects of elevation,GDP,mean annual precipitation,and nighttime light intensity exhibited significant spatial heterogeneity.(2)Total positive and negative carbon flows both increased initially,then decreased,and subsequently increased again.Positive carbon flows exhibited a dispersed distribution,while negative carbon flows were mainly concentrated in the central and western parts of the study area.(3)Ecological relationships among land types were mainly characterized by predation/constraint interactions and gradually shifted from concentrated to dispersed distribution,affecting the balance of the carbon metabolism system.(4)The symbiosis level of the carbon metabolism system first decreased,then increased,and finally decreased again.[Conclusion]The effects of various factors on vertical carbon metabolism exhibit pronounced spatial heterogeneity.Positive and negative carbon flows show distinct spatial distribution characteristics,and predation/constraint relationships dominate the ecological interactions.Land use changes in Guangzhou first promoted but later disrupted the carbon metabolism balance.关键词
碳代谢/碳流/土地利用变化/生态网络分析/广州市Key words
carbon metabolism/carbon flow/land use change/ecological network analysis/Guangzhou分类
管理科学引用本文复制引用
梁江森,梅志雄,黎思辰,王心雨..广州市土地利用变化对碳代谢的影响[J].水土保持研究,2026,33(3):289-298,321,11.基金项目
教育部人文社会科学研究规划基金项目"面向生态安全的大区域土地利用优化配置:以珠江三角洲地区为例"(23YJAZH101) （23YJAZH101）
