Abstract: In China’s conventional forest management system, there are two types of sub-compartment,i.e., the 2nd- and 3rd-level sub-compartments, which are ncurrent but inconsistent in size and boundary locations. Even in the same type of sub-compartments, the inconsistency still existed at different time, which is unbeneficial to the long-term forest management planning by using digital technologies. With the mountainous region in eastern Liaoning Province as a case, this paper established an ecological classification system (ECS), which contained 5 ecological land types (ELTs) and 34 ecological land type phases (ELTPs). Based on the basic technical needs of China’s digital forestry, the ELTPs could be used as a fixed subcompartment system. A compatible forest inventory system was designed then. It was concluded that ecosystem management based on ECS and geospatial information technologies combined with computer models and decision-support systems would be the important component of digital forestry.

Key words: enzyme stoichiometry, soil enzyme, environmental factor, altitude, Biolog