摘要
公众参与式GIS(PPGIS)是近年来GIS与社会科学和网络技术相结合产生的一个新的应用研究方向,本文首先从模型抽象的角度研究了面向PPGIS的空间信息服务的概念、组织构成、服务模式、过程行为以及评价体系等,揭示了公众参与GIS中空间信息服务模型的本质特征,其次从基于WebGIS的地理信息服务角度,对面向PPGIS的空间信息服务模型的实现。同时,为了用于PPGIS中实时参与空间信息的管理,构建了基于Ar-cIMS系统平台框架,并基于ArcIMS和ArcSDE开发了可以满足实时空间数据处理的扩展空间数据引擎。
Today＇ s researches on PPGIS have been more about the effect of GIS technology on society or culture. Based on the requirement of public participation in civil informationization and sustainable development, together with the importance of spatial information technology in solving problems with geo-spatial reference, the authors present the necessity of studying spatial information service in PPGIS. In this paper, the authors mainly study spatial information service model of PPGIS from the view of abstraction by building several models, including semantic model which includes organization model and process model, evaluation model, and so on. By doing so, the essence of service model in PPGIS is made clear. The purpose of spatial information service in PPGIS is to solve the problem by connecting information given by participants, that is to say, its information flow is two-way, and its aim is to solve those spatial problems by geo-spatial technologies which closely connect with people＇ s daily life. The organization model mainly describes participants and their relation, and participants play two roles in this model： system users and information provider; the process model is built based on such knowledge： every difficult duty can be divided into several small easy sub-operations, including pre-evaluation, problem definition, spatial decision and decision evolution; the evaluation model is composed of data quality control and decision transparency evaluation, and service mode. The authors also discuss the system architecture for providing PPGIS-aimed spatial information service, and give an ArcIMS based example. Another part of the work of this paper is the design and development of extended spatial data engine for managing spatial data produced during participation in a PPGIS based on ArcIMS and ArcSDE.
出处
《地球信息科学》
CSCD
2008年第5期599-603,共5页
Geo-information Science
