西安市城市生态足迹估算与动态变化分析

运用生态足迹分析方法对西安市1990～2001年的生态足迹进行了估算和动态变化分析。结果表明,西安市人均生态足迹从1990年的0.9012hm2/人增加至2001年的1.5820hm2/人,生态赤字从1990年的0.5376hm2/人增加至2001年的1.2691hm2/人。在此基础上进行了生态足迹的一次线性拟合趋势预测,并计算了西安市1990～2001年万元GDP的生态足迹。研究结果表明,西安市对自然生态系统的压力相对于本地区的生态承载力来说,呈现不断扩大的趋势,对西安市的可持续发展和生态安全已构成威胁。最后,提出了加强城市生态建设,减缓生态足迹的增加,确保城市及周边地区生态安全的措施。

Ecological footprint and dynamics of Xi'an City from 1990 to 2001

The theory of ecological footprint was introduced and the development of Xi'an City from 1990 to 2001 assessed using the method of ecological footprint.Results show that per capita average ecological footprint for Xi'an City is 0.9012hm2/cap.in 1990 and 1.2691 hm2/cap.in 2001.Per capita average ecological footprint deficit is 0.5376 hm2/cap.in 1990 and 1.2691 hm2/cap.in 2001.Analyses of the ecological footprint of Xi'an City indicate gradual increase in natural ecosystem requirements which threatens sustainable development of Xi'an City under given the ecological capacity of the city.Finally,some measures of reducing the ecological footprint deficit of the city are advanced.