关键词: 生命周期评价, 生命周期清单分析, 生命周期影响评价, 生命周期可持续评价

Abstract: Aiming at the attributional Life Cycle Assessment (LCA) and consequential LCA of goal and scope definition level in LCA,the problems such as the functional unit and system boundary definition,the quality and uncertainty of the inventory data,the selection and allocation of inventory data analysis,the broaden and deepen the scope of LCA and the selection of varies impact assessment methods were analyzed.The main solving methods for these key problems were also proposed.Through the study for these problems,the conclusion and outlook showed that LCA would develop along the direction of Life Cycle Sustainability Assessment (LCSA) in the future,which was not only accounted the environmental aspects,but also included the economic and society.The new key problems would be appeared in LCSA that needed further study and discussion.

Key words: life cycle assessment, life cycle inventory analysis, life cycle impact assessment, life cycle sustainability assessment