Geospatial Knowledge Service:A Review

Geographic information technology is evolving from a Geographic Information System to a Geographic Information Service,given the increasingly widespread use of the Internet.Not only are geospatial data and information shared online,but also geospatial knowledge is disseminated via the Internet.Geosciences' rules,models,and processes can be registered to the web,and provided to various users through geospatial knowledge web services based on the Internet.In this paper,the background for this transition from geospatial information to geospatial knowledge services is introduced,and key concepts of geospatial knowledge,geospatial knowledge services and the technologies are elaborated.Finally based on this foundation,an implementation of a geospatial knowledge services is discussed.