摘要
采用基于能值分析的生态足迹模型计算方法,对河南省1978年-2007年耕地生态足迹进行动态研究。基于能值分析的生态足迹模型通过将耕地生态系统中的各种能量流换算成对应的生物生产性土地面积,更真实反映人类活动对耕地可持续发展的影响。通过对河南省的耕地生态足迹与生态承载力计算结果比较,得出:河南省耕地由1978年开始生态承载力缓慢降低,生态足迹则呈持续增长,耕地生态系统逐渐变的不可持续。
The article dynamically studies the cultivated land ecological footprint in Henan Province of the years 1978-2007 through the method of ecological footprint model based on energy analysis.The method converts energy flow into the corresponding bio-productive land area,it can more truly reflect the impact of the human activities on the sustainable development of cropland.Through comparing the calculation results of ecological footprint with ecological carrying capacity,it comes to the conclusion：the ecological carrying capacity slow declining from 1978,while,the ecological footprint is showed sustained growth,and,the trends in farmland ecosystem gradually become unsustainable.
出处
《环境科学与管理》
CAS
2010年第10期144-148,共5页
Environmental Science and Management
关键词
生态足迹
能值分析
生态承载力
可持续发展
耕地
ecological footprint
energy analysis
ecological carrying capacity
sustainable development
cultivated land
