我国植被覆盖变化的城乡差异及生态安全评估体系研究

Urban-rural differences and ecological security assessment system of vegetation cover change in China

文章利用Dagum基尼系数公式和相关模型,探讨了当前国内植被覆盖变化中形成的城乡差异,并对当前国内生态安全评估体系予以深入分析。结果表明,植被覆盖差异在当前国内各地区间逐步减小,但东部地区形成的内部差异逐步提升,其他地区的内部差异整体处于减小趋势。我国各地区间在发展过程中差距逐步增加,区域呈现出减少或未形成差异发展态势。城乡差异化进程对植被覆盖生态安全效应检验表明,城乡差异化质量给植被覆盖生态安全效应带来显著的正向推进影响,在城乡发展过程中能有效促进植被覆盖生态安全效应。结合分析提出提升植被覆盖水平的策略,其中涉及发挥城乡集群的集聚效应,促进植被覆盖均衡发展等。

Using Dagum Gini coefficient formula and related models,the differences between urban and rural areas formed in the current domestic vegetation cover change were discussed,and the current domestic ecological security assessment system in depth was analyzed.The results showed that the differences in vegetation coverage between different regions in China were gradually decreasing,with the internal differences formed in the eastern region gradually increasing.In the process of development,the gap between different regions in China had gradually increased,and the regional development trend had decreased or not formed the difference.The test of the ecological security effect of vegetation cover in the process of urban-rural differentiation showed that the quality of urban-rural differentiation had a significant positive impact on the ecological security effect of vegetation cover,and could effectively promote the ecological security effect of vegetation cover in the process of urban-rural development.Based on analysis,strategies for improving vegetation coverage levels were proposed,which involved leveraging the agglomeration effect of urban-rural clusters and promoting balanced development of vegetation coverage.