中文摘要：

生态系统服务是国际生态学研究的前沿和热点，表现出向生态系统服务机理和区域集成方法两大方向发展的趋势。开展陆地生态系统服务研究，是生态系统恢复、生态功能区划和建立生态补偿机制、保障国家生态安全的重大战略需求。面向国家重大需求和生态系统服．务研究的国际前沿，以主要陆地生态系统为对象，“中国主要陆地生态系统服务功能与生态安全”项目拟解决3个科学问题：①生态系统结构-过程-服务功能的相互作用机理；②生态系统服务功能的尺度特征与多尺度关联；③生态系统服务功能评估的指标与模型。通过上述研究，发展生态系统服务研究的理论与方法，为国家的生态建设和环境保护提供科学支撑。

英文摘要：

Ecosystem service has become a hot topic in international ecological research with two major trends of advancing ecosystem service mechanism and regional integration methodologies. At the same time, terrestrial ecosystem service research is a great national science and strategic need for ecological restoration, ecological func-tional regionalization, ecological compensation, and sustaining ecological security. Targeting this necessity and the international research frontiers of ecosystem service, this project takes main terrestrial ecosystems in China as the object of research. There are three scientific themes that will be tackled： （1）the interaction between ecosystem structure, process and services; （2）spatiotemporal coupling and scale effects of ecosystem service; （3）regional ecosystem service assessment and integration modeling. Through the above, it is managed to promote the development of ecosystem service theory and applications to scientifically support national ecological rehabilitation and environmental protection.