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首页> 外文期刊>Environmental Science & Technology >Site-dependent life-cycle analysis by the SAME approach: Its concept, usefulness, and application to the calculation of embodied impact intensity by means of an input-output analysis
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Site-dependent life-cycle analysis by the SAME approach: Its concept, usefulness, and application to the calculation of embodied impact intensity by means of an input-output analysis

机译：通过SAME方法进行的与现场相关的生命周期分析：其概念，实用性，以及通过输入-输出分析在计算实际冲击强度中的应用

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摘要

This paper describes a practical approach to site-dependent life-cycle analysis (SDLCA) that differentiates site-dependent environmental impacts from a system's processes by considering the geographical conditions of each process. This approach converts an environmental output into its impacts by using site-dependent characterization factors (SDCFs). This approach defines an area-the Spatial Area of iMpact Equivalency (SAME)-within the boundaries of the geographical system during site-dependent life-cycle inventory (SDLCI) analysis and calculates an environmental output from a process for the SAMEs. Each SAME represents a collection of geographical areas with internally homogeneous environmental impacts and can be mapped using a geographic information system. Preparing a SDLCI and SDCFs based on SAMEs facilitates the implementation of SDLCA by permitting the use of fewer regions during SDLCI. To demonstrate application of the SAME approach, an embodied impact intensity was formulated; it quantifies the impact directly and indirectly on the basis of the unit activity of a sector by means of input-output analysis with SDCFs. The validity of using SAMEs for SDLCA is demonstrated through two case studies: one studying suspended particulate matter, and one studying benzene. In both cases, the impact intensities are calculated using the SAME approach and the results are compared with those of site-generic LCI.
机译：本文介绍了一种实用的站点依赖生命周期分析方法（SDLCA），该方法通过考虑每个过程的地理条件，将站点依赖环境的影响与系统过程区分开来。这种方法通过使用依赖于站点的特征因子（SDCF）将环境输出转换为影响。此方法在依赖站点的生命周期清单（SDLCI）分析过程中，在地理系统的边界内定义了一个区域，即iMpact等价物（SAME）的空间区域，并计算了SAMEs过程的环境输出。每个SAME代表具有内部同质环境影响的地理区域的集合，并且可以使用地理信息系统进行映射。基于SAME的SDLCI和SDCF的准备通过允许在SDLCI期间使用更少的区域而有助于SDLCA的实现。为了演示SAME方法的应用，制定了具体的冲击强度。它通过使用SDCF进行投入产出分析，根据一个部门的单位活动直接或间接地量化影响。通过两个案例研究证明了将SAME用于SDLCA的有效性：一个研究悬浮颗粒物，另一个研究苯。在这两种情况下，均使用SAME方法计算冲击强度，并将结果与​​现场通用LCI的结果进行比较。

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