Design and mplementation of and cological ecurity valuation ystem based on GIS and models

In order to solve the problem of lack of land ecological security evaluation system and the low degree of spatial information. 14 evaluation model was constructed, integrating with the 14 evaluation model, a professional evaluation module was established by the previous design ideas. Combing with ArcGIS Engine10.0, ArcSDE10.0, SQL Server 2008, it can integrate professional evaluation module and GIS technology, and a strong versatile land ecological security evaluation system which can manage attribute and spatial data, evaluate land ecological security, plot and output thematic maps was established. Final, the system, taking Hunan province as demonstration area, evaluation results show that: the system can manage attribute and spatial data efficiently, can quickly and accurately calculate each evaluation unit of land ecological security evaluation index, and it is be able to provide scientific decision-support tools for dicisionmaking departments.