Abstract:Climate change with regards to human-induced emission of greenhouse gases has become one of the focuses that draws strong attentions of international society, the scientific community, and the social public, and has been deeply involved in international political and diplomatic levels.Before deeply participating in the negotiation for international control of CO2 concentration, it is extremely needed for China to organize overall and systematic scientific research, and solve key scientific issues coping with climate change and confronted by international negotiation.Recently, the Chinese Academy of Sciences has launched a cluster of research projects of"key scientific issues of international negotiation with regard to coping with climate change"aiming at the study of the cause and mechanisms of climate change, impacts of climate change and adaptation, the potential and approach of carbon fixation by the ecosystem, and the policy for international negotiation with regard to coping with climate change.This effort is expected to obtain breakthrough in theoretical research in climate change in order to provide scientific guarantee for China to participate in international negotiates on climate change.