摘要
运用基于能值分析理论的生态足迹计算模型,计算了陕西省2005年的生态足迹和生态承载力。结果表明:2005年陕西省能值密度为5.02×1014sej/hm2,人均生态足迹为4.4810 hm2,人均生态承载力为0.7881 hm2,人均生态赤字达到3.6929 hm2,这说明2005年陕西省的人类活动对生态环境的影响远远超过了生态承载力的范围,其生态经济系统的发展是不可持续的。图1,表3,参10。
A modified model for ecological footprint calculation based on energy analysis could translate all kinds of emergy flows in eco-economic systems into corresponding biological production units. The ecological footprint of Shaanxi Province in 2005 was calculated using this method. The results showed that energy density was 5.02 × 10^14 sej/hm^2, eeologieal footprint was 7.716 3 hm^2/cap, ecological carrying capacity was 0.788 lhm2/eap and ecological deficit was 6.928 2 hm^2/cap,which indicate that the utilization of natural resource is beyond the capacity of the natural ecological system, and the present developing model in Shaanxi Province is in an unsnstainable development status to a certain extent.
出处
《农业系统科学与综合研究》
CSCD
2009年第2期239-242,247,共5页
System Sciemces and Comprehensive Studies In Agriculture
基金
国家自然科学基金项目(3937055
39670586)
陕西省自然科学基金项目(2001SM27)
关键词
生态足迹模型
能值分析
生态足迹
生态承载力
ecological footprint model
energy analysis
ecological footprint
ecological carrying capacity
