基于生态足迹的长株潭城市群土地生态安全分析

Analysis on Ecological Security of Land Resources in Changsha-Zhuzhou-Xiangtan Urban Agglomerations Based on Ecological Footprint

生态足迹是衡量区域土地生态安全状况的一种定量分析方法。采用生态足迹方法对长株潭城市群的生态足迹和生态承载力进行了计量分析研究,探讨了长株潭城市群土地生态系统安全状况。结果表明,长株潭城市群2007年人均生态足迹为2.5800hm2,生态足迹供给仅为0.4415hm2,出现了2.1915hm2的生态赤字。虽然长株潭城市群在不断提高土地资源的利用效率,但其城市群的发展模式是不可持续的,土地生态系统已处于超负荷状态,土地生态安全状况是一种不安全状态。针对此,提出了一些措施来改善该区域土地生态系统的安全状况,以期为长株潭城市群资源节约型、环境友好型社会的试点工作提供参考。

Ecological footprint was an analysis method for measuring land resource ecological security.This paper analyzed the ecological footmark and ecological capacity of Changsha-Zhuzhou-Xiangtan urban agglomerations in 2007 by ecological footprint model to fatherly discuss the status of land resource ecological security.The results showed that the needs of ecological footprint per capita was 2.5800hm2,the supply was only 0.4415hm2,the ecological footprint deficit was 2.1915hm2.The results indicated that although it was strive to enhance the land use efficiency in Changsha-Zhuzhou-Xiangtan urban agglomerations,its development model was not sustainable,and the land resource system was almost in the ecology over burden condition,the status of regional land resource eco-security was belong to the insecurity grade.At last,in order to provide some reference in the experimental work about building resource-economical and environment-friendly society of Changsha-Zhuzhou-Xiangtan urban agglomerations,this paper gave some useful suggestions to prove the security status of regional land resource system.