水土保持研究2024，Vol.31Issue(2)：331-341,11.DOI:10.13869/j.cnki.rswc.2024.02.009
碳排放视角下武汉市土地生态风险时空格局演变
Spatiotemporal Evolution of Land Ecological Risk in Wuhan from the Perspective of Carbon Emission
摘要
Abstract
[Objective]The aims of this study are to explore the adverse effects of land use carbon emissions on land ecological security,and to reveal the evolution of different factors.[Methods]The carbon footprint pressure index in combination vegetation cover,precipitation distance level percentage index,soil erosion degree and land use mixing degree together was introduced to construct a land ecological risk evaluation model.The entropy weighting method was used to determine the weight of risk indicators and calculate the comprehensive risk index.Finally,the spatial analysis was used to investigate the spatial and temporal evolution patterns of land ecological risk and spatial agglomeration effects in Wuhan in 2010,2015 and 2020.[Results]The overall ecological risk in Wuhan City was decreasing but the magnitude was small,the differ-ence of risk indices among administrative districts was large,the vegetation coverage in the central city was low,the land use mix was low,the carbon emission pressure was high,and the land ecological security was worrying.The land ecological risk index showed a strong spatial agglomeration state,and the degree of cold and hot spot agglomeration first increased and then weakened,and the hot spots mainly concentrated in the central urban area and Hannan District.[Conclusion]The surge in land-use carbon emissions has led to the further aggravation of land ecological risks and the diversification of risk sources,and the introduction of carbon footprint pressure index can more comprehensively assess regional land ecological risks and provide a basis for reducing land ecological risks.关键词
土地生态风险/碳排放/空间数据分析/武汉市Key words
land ecological risk/carbon emissions/spatial data analysis/Wuhan City分类
资源环境引用本文复制引用
韩雨非,刘艳中,陈勇,陈弘昳,谭玉川,汪樱,张祚..碳排放视角下武汉市土地生态风险时空格局演变[J].水土保持研究,2024,31(2):331-341,11.基金项目
国家自然科学基金(41971237,72174071) （41971237,72174071）
