全球智库信息集成服务系统(G2TT): Characterization factors for terrestrial acidification at the global scale: A systematic analysis of spatial variability and uncertainty.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.scitotenv.2014.08.099
	Characterization factors for terrestrial acidification at the global scale: A systematic analysis of spatial variability and uncertainty.
	Roy P-O; Azevedo L; Margni M; van Zelm R; Deschenes L; Huijbregts MAJ
发表日期	2014
出处	Science of the Total Environment : 270-276
出版年	2014
语种	英语
摘要	Characterization factors (CFs) are used in life cycle assessment (LCA) to quantify the potential impact per unit of emission. CFs are obtained from a characterization model which assess the environmental mechanisms along the cause-effect chain linking an emission to its potential damage on a given area of protection, such as loss in ecosystem quality. Up to now, CFs for acidifying emissions did not cover the global scale and were only representative of their characterization model geographical scope. Consequently, current LCA practices implicitly assume that all emissions from a global supply chain occur within the continent referring to the characterization method geographical scope. This paper provides worldwide 2 degree x 2.5 degree spatially-explicit CFs, representing the change in relative loss of terrestrial vascular plant species due to an emission change of nitrogen oxides (NOx), ammonia (NH3) and sulfur dioxide (SO2). We found that spatial variability in the CFs is much larger compared to statistical uncertainty (six orders of magnitude vs. two orders of magnitude). Spatial variability is mainly caused by the atmospheric fate factor and soil sensitivity factor, while the ecological effect factor is the dominant contributor to the statistical uncertainty. The CFs provided in our study allow the worldwide spatially explicit evaluation of life cycle impacts related to acidifying emissions. This opens the door to evaluate regional life cycle emissions of different products in a global economy.
主题	Ecosystems Services and Management (ESM)
关键词	Acidification Characterization factors Spatial variability Uncertainty analysis
URL	http://pure.iiasa.ac.at/id/eprint/10848/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/129988
推荐引用方式 GB/T 7714	Roy P-O,Azevedo L,Margni M,et al. Characterization factors for terrestrial acidification at the global scale: A systematic analysis of spatial variability and uncertainty.. 2014.