January,2010, the” Papers and Citations Statistics of Environmental Science Institutions of CAS(2004-2009)”, which is directed by CAS Bureau of Resources and Environment Science and Technology, and undertaken by Lanzhou Branch of NSL(The Scientific Information Center for Resources and Environment, Chinese Academy of Sciences), has been released.

　　 This report is the eleventh of the “Papers and Citations Statistics of Environmental Science Institutions of CAS” series of reports. It reported the statistics of papers and citations from 2004 to 2009 of the Environmental Science Institutions of CAS.