The Research And Exploitation Of The Embedded GIS Based On Forestry System

The embedded GIS is named as the milestone of GIS field for its unique technique, excellent performance and successful engineering application. The paper-based data collection and mapping was converted to digitized ones by the new production of embedded GIS. And the embedded GIS can acquire field data quickly and store large numbers of data. So, the embedded GIS is a revolution and it leads a trend of GIS technology.Our country has a few forest, the forest resources have the important meaning to the state economy development,and the forest resources investigation method is also quite backward,How to explore and excogitate a prefect technique method in engineering fields, especially in fields of forest resources and land resources,are the hotspot problems.This article elaborated the domestic forest resources investigation's universal characteri- stic, and elaborated the forest resources investigation universal demand, and elaborated in detail based on the forestry system's embedded geographic information system's composition, elaborated the system data acquisition module principle of design and the method; It has analyzed the forest resources wild investigation data format and the characteristic, proposed how to save the mass data the method, and has studied the database visit technology, has realized the mass data fast effective memory using the ADO technology;it has studied the attribute data quick look principle and the method, has realized the attribute data quick look function using the index file technology; it has studied the grid image compr- ession principle, proposed"tile Pyramid"the model, The compression principle has realized using"Pyramid"take the grid image as the base map fast compression; it has studied traditional Arcgis and the MapInfo data format, union system's data format characteristic, with the vector graphic data success which edits transformed as traditional Arcgis (i.e. Shape) and MapInfo (i.e. Mif) the form. In above research foundation, according to this article definite system data acquisition m- odule principle of design and imagery processing method, the distinction design has realized the attribute data demonstration and the storage module and the map demonstration and the edition module, it has provided a highly effective convenience digitized system module for o- ur country forestry resources investigation system, and has certain guiding sense to the fore- stry embedded geographic information system research and development and the application...