中文摘要：

介绍了国家重点基础研究计划项目“中国主要陆地生态系统服务功能与生态安全（2009-2013）”执行三年多来的重要研究进展，包括生态系统过程与服务机理、生态系统服务区域综合研究、国家尺度生态系统结构与服务、生态系统服务价值化与生态安全等四个方面。最后概要介绍了项目的后续研究计划。

英文摘要：

The major research progresses of the 973 project ＂Ecosystem Service and Ecological Safety of Main Terrestrial Ecosystems in China＂ in the past three years are introduced. The main results include the mechanism of ecosystem processes and ecosystem services, comprehensive research of regional ecosystem, integrated assessment of national ecosystem structures and services, and ecosystem service valuation and ecological safety. Besides, the future research plan of this 973 project is briefly presented.