We present a forest inventory expert system using both remotely sensed images and forest ecological information with emphasis on the development of forest ecological models its knowledge representation and Fuzzy inference.Initial studies have shown that expert system can not only improve forest image interpretation but also present a new idea to develop expert system for remotely sensed image interpretation. Confined to the test Conditions

the study is not very complete. In some respect

such as the extraction of forest ecological models

further studies should be made.