文章基本信息

标题：Global process-based characterization factors of soil carbon depletion for life cycle impact assessment
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作者：Teixeira, Ricardo F. M. ; Morais, Tiago G. ; Domingos, Tiago 等
期刊名称：Scientific Data
电子版ISSN：2052-4463
出版年度：2021
卷号：8
期号：1
页码：1-10
DOI：10.1038/s41597-021-01018-2
语种：English
出版社：Nature Publishing Group
摘要：Regionalization of land use (LU) impact in life cycle assessment (LCA) has gained relevance in recent years. Most regionalized models are statistical, using highly aggregated spatial units and LU classes (e.g. one unique LU class for cropland). Process-based modelling is a powerful characterization tool but so far has never been applied globally for all LU classes. Here, we propose a new set of spatially detailed characterization factors (CFs) for soil organic carbon (SOC) depletion. We used SOC dynamic curves and attainable SOC stocks from a process-based model for more than 17,000 world regions and 81鈥塋U classes. Those classes include 63 agricultural (depending on 4 types of management/production), and 16 forest sub-classes, and 1 grassland and 1 urban class. We matched the CFs to LU elementary flows used by LCA databases at country-level. Results show that CFs are highly dependent on the LU sub-class and management practices. For example, transformation into cropland in general leads to the highest SOC depletion but SOC gains are possible with specific crops.