城市尺度生态足迹模型应用中不同参数选择的影响分析

Analysis on the Effect of Valuation of Various Parameters on Application of Ecological Footprint Model on the Urban Scale

针对生态足迹模型在城市尺度上应用中的均衡因子、产量因子和平均产量3个参数的不同取值方式,分别对不同参数应用模式下城市生态足迹核算的内涵和结果进行影响分析。基于对参数的应用条件和效果的解析,指出传统生态足迹模型的应用中存在误差模糊化处理和全球可比性差的问题,"国家公顷"生态足迹模型进行消费来源分解更贴切的体现区域特征。基于参数的尺度效应分析,指出生态足迹模型存在空间可比性和体现区域特征的悖论。通过对参数内涵和模型缺陷分析,探讨均衡因子和产量因子核算中的问题,空间可比性来源于平均产量的引入,并指出模型应用中的贸易调整过程存在缺陷,进而为生态足迹理论及方法论的进一步完善提供依据。

There were different valuations of equivalence factor,yield factor,average yield when ecological footprint（EF） model was applied on the scale of urban.This paper analyzed the effect of various parameters on the connotation of EF model and the result of operation.Based on the analysis of application conditions and effectiveness,there were fuzziness processing of error and weakening of worldwide correlation.Consumptive source should be decomposed to reflect regional characters in ＇national hectares＇ EF model.Analysis on scale effect concluded that there was a paradox between spatial correlation and regional character.By analyzing connation of parameters and defects of model,the problems of equivalence factor and yield factor were discussed on calculation method,and it was pointed that average yield provided worldwide correlation to EF model.Without considering demonic trade and artifactitious products trade,there was a defect in trade-correction of urban scale ecological footprint model.The results of this study would provide some suggestion on perfecting the EF theory and methodology.