Abstract
As corporate activities are needed for biodiversity conservation, a number of companies have started to understand the relationship between their supply chain and biodiversity. Life Cycle Assessment (LCA) has become to assess environmental interventions throughout a life cycle of products or supply chain. However, most of LCA case studies focus on global warming such as carbon footprinting, a number of studies assessed an impact on biodiversity is still limited. Land use is considered as key inventory item to promote biodiversity assessment in LCA. This study aimed at the development of land use inventory database using input-output analysis. Thjs study estimated occupied land area caused by a certain amount of production activities. To verify the adequacy of this study, an estimation of land use area induced by Japan's domestic consumption was carried out.