甘肃省1990—2002年生态足迹的计算与分析

本文运用生态足迹模型对甘肃省1990—2002年的生态足迹进行了计算和分析。结果表明,1990—2002年间甘肃省的人均生态足迹和总生态足迹需求均呈逐渐增长趋势,而人均生态承载力和总的生态承载力均有不同程度的下降。运用万元GDP、人均贸易足迹和生态协调性系数指标对计算结果进行分析,得出甘肃省的发展是通过消耗自然资本存量来弥补生态承载力的不足的,处于一种生态不协调状态。

The Ecological Footprint Dynamic of Gansu Province From 1990 to 2002

The ecological footprint method is a biophysical assessment method of the human appropriation of ecological capacity,for measuring the ecological imperative of sustainability.This research applied the constant global yield method to calculate and analyze the ecological footprint of Gansu province from 1990 to 2002.The result showed that during 1990-2002,the absolute values and the values per-captia of EF had a trend of increase gradually.The demand of fossil and energy land account for a large section in all EF demand and the average ratio during 13 years was 54.78%.The next large section was the demand of crop land and pasture.The ratios of them were respectively 21.39% and 19.47%.While the absolute values and the values per captia of biological capacity(BC) had been decreased.Especially from 1991 to 1992,the BC per captia declined from 1.25hm~(2)/cap to 0.99hm~(2)/cap.The result also displayed that the ecological surplus existed before 1995,because the BC was larger than EF.However,the ecological deficit had emerged and its absolute values increased year by year from 1995.