The 12th International Congress of Ecology (INTECOL2017Beijing) organized by INTECOL will be held in Beijing, August 20-25, 2017. As the host of the congress, the Ecological Society of China warmly welcome you to join this meeting together with leaders in ecology from the globe, as well as scientists, educators, practitioners and policy-makers, who are dedicated to protecting and preserving our planet. The theme of the congress is Ecology and Civilization in a Changing World, which will focus on harmonious and sustainable development among people, nature, and society in the context of global development. During the congress, the issues on the following fields will be thoroughly discussed, i.e., ecosystem service valuation and sustainable development, culture conservation and human well-being, global change, environmental change in urbanization, ecosystem restoration and management, biodiversity conservation and ecosystem health, ecological civilization, molecular ecology and ecological genomics. We do hope you can join us for discussing the issues faced by human and finding solutions to them, as well as making new friends from the other regions.