摘 要 ：我国传统森林区划中，二类小班和三类小班两类小班体系同时存在，二者在空间上 不一致；即使是同一小班体系，先后两次调查结果也不相同,不利于应用数字技术制定长期 的森林管理计划.本文以辽宁东部山区为例，建立生态分类系统(ecological classificati on system, ECS)，共得到5类生态土地类型(ecological land type, ELT)，34类生态土地 类型相(ecological land type phase, ELTP).以ELTP作为固定小班，设计了一致性森林资 源调查方法，解决了我国数字林业建设中的基础技术问题.以生态分类系统和空间信息技术 为依托的生态系统管理方法，加上计算机模型和辅助决策界面的支持，构成了数字林业的基 本框架.
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 ncurre nt 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 tech nologies. 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 subcompartment 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.