The research status on precision agriculture by use of bibliometric analysis from three databases

By use of bibliometric analysis and with the help of a reference software called NoteExpress, 1845 documents on precision agriculture published between 1997 and 2008 are studied and categorized from three databases: Science Citation Index Expanded, Conference Proceedings Citation Index-Science and Ei-Compendex Web. The research covers the following areas. 1. Statistics of keywords used in the 1845 documents. 2. Statistics of publication years of documents. 3. Statistics on the numbers of documents written by different authors. 4. Statistics of documents type. The aim is to provide data for scholars on the study of precision agriculture and help them know the research hot spots and the development trends of this area.