Editorial introduction / Overview: Special Issues on the horizontal of research and methodologies on Sustainability in Asia

The eight papers in this special issue touched a variety of issues and took many approaches to deal with the new sustainability problems in East Asia. The cities and regions being introduced in mainland and Taiwan in China and Korea are good representatives of those areas largely affected by the physical and social transformation in the course of urbanization. The authors have explored the related problems from a wide range of perspectives, including urban development, environment-friendly planning, eco-tourism, community development, and cross-border cooperation. The research methodologies presented in this issue also ranged from quantitative spatial analysis with the applications of GIS and RS to qualitative analysis. The findings and proposals are expected to provide insights for other cities and regions bothered with similar problems