生态系统研究是地球系统科学的重要组成部分，近年来，各国和各相关研究机构对生态系统的研究力度不断加大。利用Thomson Data Analyzer、NetDraw和Aureka等文献计量工具，结合Pathfinder算法对SCIE和SSCI数据库中国际生态系统研究相关文献进行了分析。在对主要国家和机构的发文进行统计分析后发现：美国、德国和英国等国的生态系统研究论文的综合影响力较高，其中美国是国际生态系统研究合作的中心；加州大学伯克利分校、美国国家海洋与大气管理局和法国农业科学研究院等机构的论文影响力较大；美国农业部、德国马普学会、华盛顿大学和瑞典隆德大学是国际生态系统研究的中心；中国生态系统研究论文在总量上优势明显，但整体论文质量不高；国际生态系统研究的主要研究热点集中在珊瑚礁生态系统研究、气候变化研究和生态系统管理等方面。

Ecosystem is an important part of the earth system science. In recent years, various countries and relevant agencies have continued to increase efforts to study the ecosystem.In this paper, combined with “pathfinder” algorithm, we use the bibliometric tools such as Thomson Data Analyzer, NetDraw and Aureka to analyze the data of ecosystem research from the SCIE and SSCI databases.  By the statistical analysis of the literature data of the main countries and institutions, we have found  that: The ecosystem research papers from  the  United States, Germany and the United Kingdom have stronger impact in this area; the United States is the centre of international cooperation of ecosystem research; The impact of the ecosystem research papers from University of California-Berkeley,National Oceanic and Atmospheric Administration and the French National Institute for Agricultural Research is stronger; the United States Department of Agriculture,the Max Planck Institute,Washington University and the University of Lund are centers of international cooperation for ecosystem research; Chinese ecosystem research papers have obvious advantages in quantity, but the quality of papers is not high; The main research focuses of the international ecosystem research  are  concentrated  on the coral reef ecosystem research, climate change research and ecosystem management,etc.