The Research On Graded Services Of Forest Resource Spatial Information Based On Soa

With the dual-driving of technology development and application demands, it is an inevitable trend for geographic information system develop from tangible GIS to intangible spatial information service. Based on 3S technology, network technology, and database technology, forest resources spatial information service can handle and manage a large number of relevant spatial information efficiently. Moreover, with convenient and efficient access, query, publication, conversion, download, exchange and application, it provides "one-stop" services for all types of users to meet the needs of forest resource management and facilitate the sustainable development of forest resources. The change of user's level and/or user's environment as well as the different service roles all need graded forest resources spatial information to provide services.In response to these needs, the thesis adopts the methods of interdisciplinary research, service-oriented architecture modeling techniques, combining abstract models and concrete application to study forest resources spatial information service systematically. Firstly, the thesis studies the theoretical basis of graded services of forest resources spatial information on the basis of analyzing different user different query towards services of forest resources spatial information. Secondly, the thesis probes into forest resources spatial information graded services business view model and SOA-based graded service model. And based on the abstract graded service model of forest resources spatial information, concrete implementation process of graded service is carefully studied. Core of this thesis as follows:(1) Studied how to classify the service based on user, then make a second classification of services by query, and implemented Semantic Web to describe metadata services.(2) Studied the pattern of service combination based on Semantic Web multi-match, utilising Ford-Fulkerson and Dijkstra to match function and non-function services.Finally, the thesis studies the design and realization of platform on forest resources graded spatial information services on the basis of SOA framework, including system design, system operation and system environment running instance of forest resources graded spatial information services.The research achievements include the following aspects:(1) To put forward the strategy, the methods and the models of the service of forest resources graded spatial information.(2) To build a graded service model of forest resources spatial information in the component-based modeling and SOA reference model. And to realise the program of active model of forest resources spatial information graded service.(3) To propose a classification method orients users and queries which graded services of forest resources spatial information. And to discuss the description approaches of service classification based on Semantic Web.(4) To achive combination of graded spatial information services of forest resources and Semantic Web based web after study the realising strategy of spatial information service composition.(5) To accomplish the designing and developing of a prototype system of graded spatial information services of forest resources.The thesis provides suggestions to the research and application of graded spatial information services of forest resources, helping to carry out other related research work. Based on the experimental data of graded spatial information services of forest resources in Bejing, fujian, and guangdong, the service has been applied extensively and strongly promoted the achievements of industrial transformation, achieved good economic and social benefits. Adoption of this system will improve service level and develop the services mode of our country forest resources spatial information service, it will also promot the realization of information sharing and utilization of forestry. This research has broad application prospects.