基于能值生态足迹模型的重庆市生态安全评价

Ecological Security Assessment of Chongqing Based on Emergy Ecological Footprint Model

在生态足迹模型基础上,运用"能值-生态足迹"模型计算重庆市2004～2008年的生态承载力和生态足迹,并引入生态压力指数、生态足迹多样性指数以及生态协调系数,构建生态安全评价指标体系,对区域的生态安全现状进行动态分析与评价。计算结果表明重庆市2004～2008年的人均生态足迹呈上升趋势,持续出现生态赤字,生态压力指数呈快速增长,生态足迹多样性指数存在小幅波动,现有的生态安全的发展趋势不容乐观,社会经济发展与生态环境的承受能力不相协调。

Based on the conventional ecological footprint, the ecological carrying capacity and ecological footprint of Chongqing during 2004 -2008 were calculated by the emergy - ecological footprint model. The ecological pressure index, ecological footprint diversity index and the ec- ological coordination coefficient were introduced to construct the evaluation index system of ecological security. The dynamic analysis and as- sessment of the present condition of the regional ecological security were accomplished by them. The calculation results showed that there was a continuous increase in per capita ecological footprint of Chongqing during 2004 -2008. The ecological deficit appeared and the ecological pressure index increased rapidly. The ecological footprint diversity index fluctuated slightly. The current development trend of the ecological security was not optimistic, and it＇s social economic development didn＇t go well with ecological environment enduring ability.