Reply: Downstream cut-offs in integrated hybrid life-cycle assessment

摘要: Abstract In the comment by Peters and Hertwich (Peters, G.P., Hertwich, E., 2006-this issue), authors provide two interpretations on one of block matrices that is a part integrated hybrid Life Cycle Assessment (LCA) framework presented in Suh (2004a) (Suh, S., 2004a. Functions, commodities environmental impacts an ecological economic model. Ecological Economics 48 (4), 451–467). The argue contribution downstream cut-off matrix to overall results might be small, or amount resources needed compile will too high, depending type LCA databases distinguish. this response, I confirm generally minor, which can easily recognized from structure system. However, should realize there are cases when it not, leaving little reason automatically preset as zero matrix. A set conditions under becomes important discussed, practical method for checking potential importance before actually compiling data presented. tested using numerical example shown . distinction based their capabilities handling arbitrary demands, proposed discussed practitioner’s point view, argued actual process collection far what suggest. Finally, step-wise strategy efficient budget time constraints discussed.