Establishment Of Expert System For Fast-growing And High-yield Forest Soil Testing

Today, the growth rate of the trees can not meet the needs for the sustained development of economic and social, which led to the contradiction between the supply and demand of forest resources, to create a fast-growing and high-yield forest has already been proven to be the most important way to ease this problem. The most important problem in building the fast-growing and high-yield forest is to improve the productivity and find the suitable species.In recent years, with the rapid development of computer technology, information technology and matures of geographic information systems technology, the WebGIS also appears. It is a GIS product based on internet, can achieve the interoperability of GIS, use the WebGIS application to create the fast-growing and high-yield forest, can turn the traditional afforestation methods to the "digital forestry"The fast-growing and high-yield forest soil testing expert system which is designed and developed in this paper, detailing of WebGIS the theoretical knowledge and expert system knowledge, analysis and compare the commonly used method of knowledge representation, according to the knowledge characteristics of fast-growing and high-yield forest use both productive representation and framework representation, it can improve the efficiency of the system. Design the fact base and rule base of knowledge base, also design the inference engine of the fast-growing and high-yield forest expert system, using the intelligent reasoning methods to facilitate the operation of user. According to site conditions to determine the suitable species for planting and guidance by the expert system, also do the secondary development for geographic information system, achieve the basic operation of the map, and view the suitable species for planting by the map.The fast-growing and high-yield forest soil testing expert system is an application system to serve the foresters, it’s based on a large number of knowledge and experience of experts in this field, combined with expert system, database technology, WebGIS technology and other advanced information technology, can provide effective consulting services for users, the expert knowledge can really reach to the primary users, it help to find out the woodland soil resources, to provide technical support for the improvement of management level and the income of foresters.