Developing Sustainable Geo-information Service In The Context Of SDI

Geo-information service (GI-service) has been facilitated fast by technology development and increasing customers' requirement, from service aiming at single requirement, to service being well-described for reusing. Nowadays services supplied by service providers are published in service repository for service retrieving by customers in the geo-information market.GI service provider decides the quality version of GI-service which affects service status in the market. To be advantaged in competition in the market, GI service provider should optimize their geo-processing, products and services to be more effective and sustainable, which can facilitate the using of service. As to make GI-service to be sustainable is an attempt, we try to find the way to evaluate sustainability of GI-service by using the concept of sustainability and the criteria to evaluate sustainability in general.The main objective of this research is to propose a method for developing sustainable GI-service. Firstly as the theory foundation of this research, the concepts of GI-service, classification of GI-service, GI-service system are introduced. And then, basing on the common sustainability concept, the selection of sustainability indicators and sustainability evaluation, propose a method for GI-service sustainability evaluation, and establish the framework of GI-service sustainability evaluation which can be used for further evaluation. At last, as the main part of thesis, according data collected from the fieldwork at SBSM, the customers' requirements will be analyzed to get the core services requirements. Then establish a service system, and design and specify the components and architecture of the system.The interaction of these core services could provide functionality for complex service tasks. GI-service architecture needs to be established to specify the interaction between core services. Basing on required core services, the concept of service system and reviews of GI-service provision, a scenario of "to-be" situation of service system will be proposed for SBSM. The service components and service interactions in the system will be designed according OGC standards, to improve interoperability of service. To evaluate the developed GI-service, the evaluation framework developed before will be utilized. This work provides evidence for improving service to be sustainable. The result of evaluation could be used as one item of service metadata, which can be queried by customers as one element for choosing GI-service. It's an efficient way to improve customers' satisfaction which affects the sustainable existing of service.