基于能值理论的西宁市生态足迹分析  

Analysis of ecological footprint of Xining city based on emergy theory

作　　者：刘志杰[1] 陈克龙[1] 赵志强[2] 苏茂新[1] 

机构地区：[1]青海师范大学生命与地理科学学院,西宁810008 [2]北京大学城市与环境学院,北京100871

出　　处：《国土与自然资源研究》2011年第1期5-7,共3页Territory & Natural Resources Study

基　　金：国家科技支撑计划-高寒地区植被多样性对气候变化的响应模式与管理对策(2007BAC03A08-5子项目);国家社会科学基金项目(08XJY012)

摘　　要：本文在传统生态足迹模型的基础上,运用能值生态足迹模型对西宁市的生态足迹进行了计算和分析。与传统的生态足迹模型相比,改进后的模型采用能值转换率、能值密度等相对稳定的参数,并将自然资源转化为太阳能值,因而区域可比性更强。利用传统的生态足迹模型,2007年西宁市人均生态足迹为1.2990 hm2,人均生态承载力为0.4432 hm2,人均生态赤字为0.8558 hm2。采用改进的生态足迹模型,2007年西宁市人均生态足迹为4.2365hm2,人均生态承载力为0.3853hm2,人均生态赤字为3.8512hm2。两种方法的计算结果生态足迹均超过生态承载力,这表明西宁市的经济社会发展处于不可持续状态。Based on the conventional model of ecological footprint,put forward a modified model by connecting emergy analysis to the model of traditional ecological footprint,analysis the ecological footprint of Xining city in 2007.Compared with conventional model,the modified model included the parameters of emergy transformation rate and emergy density,and translated the natural resources into solar emergy,so it was more comparable in regions.By using the conventional model,the ecological footprint of Xining city in 2007 was 1.2990hm2·cap-1,the carrying capacity was 0.4432hm2·cap-1,and ecological deficit was 0.8558 hm2·cap-1.Calculated by the modified model,ecological footprint was 4.2365hm2·cap-1,the carrying capacity was 0.3853 hm2·cap-1,and ecological deficit was 3.8512hm2·cap-1.The ecological footprint value both exceeded its carrying capacity based on the two methods,which showed that the social and economic development of Xining city was not sustainable.

关 键 词：能值分析 生态足迹 生态承载力 生态赤字 可持续发展 西宁 

分 类 号：F061.5[经济管理—政治经济学]