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环境足迹是近年来国际生态经济学的研究热点。从指标的分类与整合两方面对环境足迹进行了深入分析。基于所涉及的资源代谢方式,将环境足迹分为资源足迹、排放足迹和复合足迹三大类;基于足迹内部各组分之间的加和方式,又进一步将其分为等权加和与特征化加和两类。据此提出了两种环境足迹整合范式:一种基于系统资源代谢,对所有物质流量进行等权加和,从而公式化表达资源总足迹、排放总足迹和环境总足迹;另一种基于生命周期影响评价,通过特征化加和清单物质来量化各类环境足迹,然后对核算结果进行标准化和权重化处理,最终得到环境影响综合评价指数。
Environmental footprint is a hot research topic in international ecological economics in recent years. The environmental footprint has been deeply analyzed from the aspects of index classification and integration. Based on the method of resource metabolism involved, the environmental footprint is divided into three categories: resource footprint, emission footprint and composite footprint. Based on the summation of the components within the footprint, the environmental footprint is further divided into sum of features and features Add up and two categories. Based on this, two environmental footprint integration paradigms are proposed: one is based on the system resource metabolism, the sum of all the substance flows is summed up to formulate the total footprint of the resource, the total footprint of the emissions and the total environmental footprint; the other is based on the impact of the life cycle The evaluation quantifies various environmental footprints by characterizing the list substances and then normalizes and weights the accounting results to finally obtain the comprehensive environmental impact assessment index.