摘要
为更加准确地核算小尺度生态足迹,建立了"国家公顷"模型,明确了均衡因子和产量因子的含义与计算方法。在计算方法上,引入热值的概念,克服了不同类型生物产品不能直接加总的难题。以重庆市为例,应用建立的模型测算2007年各类土地的均衡因子和各类土地的产量因子。结果表明,计算数值与国际上通行的数值存在较大差异,但客观地表达了国内及重庆市的实际情况,存在差异是合理的;重庆市人均生态足迹达2.258hm2,人均生态赤字达1.894hm2,说明重庆市的经济处于不可持续发展的状态;所构建的方法简单易行,结果合理。
In order to accurately measure small-scale ecological footprint,＂national hectare＂ model was established,the connotation and calculation of equivalence factor and yield factor were determined.To overcome obstacle that different biomass yielded can not be added directly,caloric value embodied in unit biomass was innovatively introduced to calculate equivalence factors and yield factors.Equivalence factors and yield factors of biologically productive land and water in 2007 in Chongqing were calculated through this method.The results gained from ＂national hectare＂ framework was differed from figures which universally prevail in ＂global hectare＂.But it recognized that values of equivalence factors and yield factors achieved in this paper delivered the actual circumstances of Chongqing.By using the modified model,the ecological footprint of Chongqing in 2007 was 2.258 hm^2/person and ecological deficit was 1.894 hm^2/person,which shows that the economy status of Chongqing is in a state of unsustainable development.Finally,it was pointed out that the constructed method is simple,results were reasonable.
出处
《安徽农业科学》
CAS
北大核心
2010年第15期7868-7871,共4页
Journal of Anhui Agricultural Sciences
关键词
生态足迹
国家公顷
转换因子
转换方法
热值
可持续
Ecological footprint
National hectare
Conversion factor
Conversion method
Caloric value
Sustainable
