在传统生态足迹模型的基础之上,采用基于能值理论的生态足迹方法计算了博州的生态足迹和生态承载力,并衡量了研究区的可持续发展状况。能值生态足迹方法采用了能值转换率、能值密度等较为稳定的参数,将人类对各种资源的利用转换为太阳能值进行比较,更能真实的反映研究区域的特征。使用能值生态足迹方法计算得到,研究区2007年的人均生态足迹为6.948hm^2,人均生态承载力为0.837hm^2,人均生态赤字为6.111hm^2。与传统生态足迹方法计算结果一致,研究区处于不可持续状态。
Based on the conventional ecological footprint model, we used a modified ecological footprint which based on emergy analysis to calculate the ecological footprint and ecological capacity of Bortala Mongol Autonomous Prefecture, and evaluated the development sustainability. Compared with conventional ecological footprint model, the parameters including emergy transformation rate and emergy density adopted by the new model were more stable. Through translating all the natural resources into solar emergy, the modified ecological footprint which based on emergy analysis could reflect regional character better. By using the modified model, the ecological footprint of Bortala Mongol Autonomous Prefecture in 2007 was 6. 948 hm^2, ecological capacity was 0. 837 hm^2, and ecological deficit was 6.111 hm^2. The result was the same with the conventional ecological footprint model: the ecological footprint greatly exceeded its ecological capacity, and the research area is ecologically unsustainable.