Gis-based Fuzzy Comprehensive Evaluation of Forest Fire-potential Zone-grading

Forest fire-potential is natural disaster that breaks out strongly , destructs largely and is difficult to dispose and rescue, its destructive power has a serious threat to the security of society and human living environment, moreover, it does greatly damage to natural ecological environment. Therefore, the study on forest fire prediction and prevention is a main job. In fact, it is complicated to be carried out, fire-potential zone-grading for forest region is an important method to prevent the occurrence of forest fire, and is one of the foundations to carry out other preventive measures. This paper puts forward the concept of GIS-based fuzzy comprehensive evaluation of forest fire-potential zone-grading. The principle of the fuzzy comprehensive evaluation is expatiated, the choice of the forest-potential factors and the obtainment process of factor weights and subordinate function are studied. Combining with the spatial features of forest-potential evaluation, the feasibility of GIS is analyzed and the structure chart of GIS-based fuzzy comprehensive evaluation of forest fire-potential zone-grading is put forward. Finally, an experiment system is developed with Visual Basic and GIS component technology, which takes some forest region as study area. * Corresponding author. [email protected]