Abstract: Compiling sub-compartment polygon is essential for establishing the forest resources database.On the basis of Visual Studio 2005 platform and by use of ArcEngine 9.3 software development module,this study discussed the functions of creation of new polygon and modification and edition for the existing polygon.Furthermore,the functions for the forest updating due to forest logging,forest fire,forest pest,landslide and other project construction,were also discussed,and then the convenient,efficient and intelligent development scheme was proposed.As a result,the efficiency and accuracy of compiling forest sub-compartments were improved.Finally,it was conclude that,(1) The method for seamlessly creating adjacent sub-compartments was proposed under the hypothesis that the start node and end node must be in the adjacent polygons;(2) the scheme for seamlessly compiling the shared border of adjacent polygons was introduced by appending,delete and moving the nodes with the attributes of features unchanged;(3) the updating method and case study for expediently managing forest resources when the sub-compartment was changed by polygon objects,including the geometry object and attributes.

Key words: ArcEngine, subcompartment, modifying of adjacent polygons, update of forest dataset