A combination of natural condition and human activities caused significant effects on land use in Asia, and brought challenges for decision making on sustainable land management. Land use function (LUF) approach has been developed for assessing policy impact on performance of multi-functions attached to land use, and economic, environmental and societal impacts of land use changes have on sustainability. LUF is a crosscutting but less studied issue. This project addresses questions of what are the policy impact on LUF and sustainability, and how to mainstream the results into land use decisions? It aims to a place-based comparative study in China, Bangladesh and Japan by selecting remote rural areas and linking to local policy/program/plan and international best practices, to develop a framework, indicator system and scenarios for quantitative assessment of policy impact on LUFs, and enhance regional partnerships with Global Land Project(GLP)/Future Earth(FE)/IPBES/APEC and APN through joint activities, shared data/findings and dissemination materials. Quantitative data will be developed from intensive field surveys using professional tools like Participatory Rural Appraisal (PRA), Key Informant Interview(KII), Framework for Participatory Impact Assessment(FoPIA),satellite images and statistics. The study highlights stakeholders’ participation/skill improvement; proposed activities and expected outputs are closely relevant for APN goals and agenda in various ways.