It is anticipated that the potential benefits of GIS in environmental assessment will continue to increase. Environmental studies are related to the implementation of monitoring and modeling activities that require the use of reliable databases and validated technologies. For these purposes, conventional terrestrial measurements and methods continue to apply, but geographic information systems (GIS) and remote sensing are increasingly used.
Keyword: geographic information system
Modeling can be defined in the context of geographic information systems (GIS) as occurring whenever operations of the GIS attempt to emulate processes in the real world, at one point in time or over an extended period. Models are useful and used in a vast array of GIS applications, from simple evaluation to the prediction of future landscapes. Modeling in GIS raises a number of important issues, including the question of validation, the roles of scale and accuracy, and the design of infrastructure to facilitate sharing of models.
Spatial data infrastructure (SDI) is the infrastructure that facilitates the discovery, access, management, distribution, reuse, and preservation of digital geospatial resources. The aim of this paper is to present the nature and concept of spatial data infrastructures, which have helped to build understanding about the importance of the relationships within different levels of SDIs to support the interactions and partnerships of the spatial data communities.