Abstract: For a long time,the difference has always existed in all kinds of forest resources inventory data,which directly affects the use and release of inventory results and needs further analysis and study.Through the comprehensive analysis on the data difference problems of forest resources inventory,this paper points out the main error sources,conducts the system classification and analysis and puts forward the method and way to solve data difference,which will be benefitial to the development and improve ment of the integrated national forest resources inventory system.

Key words: forest resources inventory, data error analysis, data quality control, data fusion technology