甘肃省2002年生态足迹的投入-产出分析

生态足迹是环境可持续发展评价的指标之一,生态足迹的投入-产出分析通过展示实际的土地资源在部门间的流动与分配,直接勾勒了部门间的联系.介绍了生态足迹投入-产出的计算方法,以甘肃省2002年生态足迹计算为例进行了实证分析.结果表明:甘肃省2002年生态足迹为8.73×10⁷hm²,接近2002年甘肃省土地总面积的2倍;流出足迹为1.28×10⁷hm²,流入足迹为2.28×10⁷hm²,流入足迹高于流出足迹近一倍;生态足迹流入占生态足迹最终需求的26%,表明甘肃发展对于进口的依赖很大.

Input-Output Analysis on Ecological Footprint of Gansu Province in 2002

After reviewing the standard calculation of ecological footprint(EF),a new calculation of EF which is developed and used widely in the recent years is introduced.The calculation is based on the input-output model proposed by Bicknell and advanced by Ferng.Having summarized in detailed how to use the method to calculate the EF,the EF calculation of Gansu province in 2002 is taken as a case study.The result shows that the EF caused by final domestic demand is 8.73×10⁷ hm²,nearly twice as the total land area of Gansu,obviously overloading the environment supply in Gansu.And the EF exported is 1.28×10⁷ hm² with 91% of the energy-density’,and the EF imported is 2.28×10⁷ hm² with 45% of the energy-density’.The EF imported is twice as large as EF exported.It is also estimated how reliant of Gansu on import to sustain consumption,which is represented by the ration of EF imported to EF final demand.This result to Gansu is 0.26.