期刊论文

Spatiotemporal Evolution of Land Ecological Risk in Wuhan from the Perspective of Carbon Emission

中文

水土保持研究

1005-3409

2024

31

2

331-341

10.13869/j.cnki.rswc.2024.02.009

41971237:国家自然科学基金 72174071:国家自然科学基金

本校为其他机构

[目的]探究土地利用碳排放对土地生态安全的不利影响,揭示不同因素的演变情况.[方法]引入碳足迹压力指数,并结合植被覆盖度、降水距平百分比指数、土壤侵蚀程度和土地利用混合度一同构建土地生态风险评价模型.使用熵权法确定风险指标权重并计算了综合风险指数.最后,利用空间分析方法,探究了武汉市 2010 年、2015 年、2020 年土地生态风险及空间集聚效应的时空演化规律.[结果]武汉市生态风险整体呈降低态势但幅度较小,各行政区风险指数差值大,中心城区植被覆盖度低、土地利用混合度低、碳排放压力高、土地生态安全状况堪忧;土地生态风险指数呈较强的空间集聚状态,冷热点集聚程度先增强后减弱,热点...

[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 t...