基于能值分析的甘肃天祝县生态足迹研究  

Ecological Footprint in Tianzhu County Based on Emergy Analysis

作　　者：汤萃文[1,2] 苏研科[1] 杨国靖[3] 杨莎莎[1] 刘洋[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730000 [2]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000 [3]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000

出　　处：《冰川冻土》2011年第1期220-226,共7页Journal of Glaciology and Geocryology

基　　金：中国科学院冻土工程国家重点实验室开放基金项目(SKLFSE201002);中国科学院知识创新工程重要方向项目(KZCX2-YW-QN310);国家自然科学基金项目(3050007530970490);兰州交通大学"青蓝"人才工程基金计划项目(QL-08-04A)资助

摘　　要：基于能值分析理论的生态足迹计算模型,是在传统的生态足迹模型基础上结合能值分析理论提出来的改进的生态足迹模型.与传统模型相比,它采用的能值转换率、能值密度等参数更加稳定,更能反映区域特征;同时,它将所有的自然资源转化为太阳能值进行比较,因而具有更强的可比性.应用改进生态足迹模型,分析了天祝县2007年生态经济系统的环境状况,得到人均生态足迹为0.0245hm2,人均生态承载力17.1hm2,生态足迹未超过生态承载力.与传统生态足迹模型的计算结果相一致,但与传统生态足迹模型相比,改进生态足迹模型的计算结果能更真实地反映生态经济系统的环境状况.The ecological footprint integrated model based on emergy analysis is a modified model from traditional ecological footprint.Compared with conventional model,the modified model parameters,including emergy transformation rate and emergy density adopted by the model is more stable,and can better reflect the regional characteristics.Meanwhile through translation of all the natural resources into solar emergy,the modified model is more comparable.By using the modified model,the ecological environmental situation of Tianzhu County in Gansu Province in 2007 was analyzed.The results showed that the per capita ecological carrying capacity of Tianzhu County in 2007 was17.1 hm2/person,and the per capita ecological footprint was 0.0245 hm2 /person,showing that the ecological footprint did not exceed the ecological carrying capacity.This conclusion consisted with the results calculated by using the traditional model of ecological footprint.However,compared with traditional ecological footprint model,the modified ecological footprint model gives a more realistic picture of the environmental situation of the ecological economy system.

关 键 词：能值分析 生态足迹 生态承载力 天祝县 

分 类 号：F062.2[经济管理—政治经济学]