Welcome to the 6th International Symposium on Larger Asian Rivers, which will be held on 9th-13th May, 2014, in Yangling, Shaanxi, China. The theme of this symposium will be focused on Sustainability of Water Environment and Ecology - Biodiversity and Ecological Security at river basin scale. We hope our regular academic symposium will provide a professional and excellent platform for exchanging new ideas and sharing new findings on larger Asian rivers research among scientists and research community, especially the work of our young research scientists. We welcome participants with a wide range of backgrounds and focuses who can enlighten and inspire others, through whom scholars in a range of disciplines can be affected. Alongside this symposium, special issues in international peer-refereed journals Quaternary International (IF>1.96 in 2012) will be published. We can also recommend quality papers to Sustainability of Water Quality and Ecology (Elsevier new journal). We are looking forwards to meeting you in May, 2014, inYangling, Shaanxi.