Abstract: The consistency of boundary was studied where many people work together in forest resource survey based on GIS. Based on workflow of subcompartment dividing,a series of supplementary functions taken the edge locking as its center were developed to ensure the consistency of division and to improve efficiency of wark.By the application of topological polygon data model,the graphic breaking up method was proposed to realize the parent region auto-dividing into child region and auto-merging the divisions into the whole region step by step based on region and boundary code. During the division,Edge locking and autocoding technique were developed to ensure the consistency of boundary and improve efficiency of coding work. A optimized workflow was presented by applying above technique and give a good solution for multi-person cooperation. The analysis and practical application showed that the method presented will improve the efficiency and possess a good application value.

Key words: forest resources investigation, subcompartment division, GIS, edge locking, autocoding