基于能值生态足迹模型的陕西省生态安全评价

Assessment of Shaanxi Province Eco-security Based on an improved Emergy Eco-footprint Model

为评价陕西省的生态安全状况,以传统能值分析理论为基础,结合生态足迹模型进行改进,以2016年陕西省的统计数据为依据,对陕西省的生态安全情况进行了计算与分析.结果表明,2016年陕西省能值生态足迹68.45 hm^2/人,能值生态承载力17.61 hm^2/人,生态压力指数3.89,生态协调系数为1.22.陕西省生态环境较安全,处于轻警程度,生态协调性一般;但对化石能源的依赖程度较高.因此,陕西省需要改善区域生产、生活方式和消费模式,提高生物生态足迹多样性.

In order to evaluate the eco-security situation of Shaanxi Province,based on the traditional emergy value analysis theory,combined with the eco-footprint model,the mode was improved.Based on the statistical data of Shaanxi Province in 2016,we calculate and analyze the eco-security situation of Shaanxi Province.Research indicates that the per capita emergy footprint of Shaanxi Province is 68.45 hm2,the per capita emergy carrying capacity is 17.61 hm2,the eco-stress index is 3.89,and the eco-coordination coefficient is 1.22 in 2016.The ecological environment is relatively safe at the level of light police.It still has a high dependence on fossil energy in Shaanxi Province.Therefore,we need to improve the regional production,lifestyle and consumption patterns,and improve the biology eco-footprint diversity.