The design method of datebase,knowledge base,inference engine and interpreter in Expert System（ES for short） of forest land classification and evaluation were eleborated.The functions of modules development of logon,classification,evaluation and crystal report have been realized in view of powerful combinational advantages of Visual Basic.Net and MS SQL Server developer edtion;and the GIS map＇s management module has been developed by means of ESRI company＇s ArcEngine component,and the analysi...
