Abstract: Based on the analysis of research result concerning forest resource regeneration,An approach and technology route for updating forest resource data based on the information contained in forest sub-compartment of forest management inventory was proposed from the production practice point of view.The technical route implements updating the annual statement of forest resources and data updating in sub-compartment level based on the data of previous forest management inventory,annual forest management archive data and two-stage satellite image,by applying 3S technology,mathematical model and database technology,combined with field investigation.The practice shows that the approach is feasible and supports the full and accurate data updating efficiently and reliably.

Key words: forest management inventory, forest sub-compartment, data updating, annual statement