3S技术在森林火险等级研究中的应用

Application of "3S" technique for the forest fire danger rating

综合运用"3S"技术,以北京鹫峰国家森林公园林场的小班作为研究单元,综合考虑了立地条件因素、地形因素以及人为因素作为研究火险等级的依据,对火险等级进行描绘,生成了鹫峰林场的火险等级分布图。鹫峰地区火险等级划分为5级,经统计,较易燃烧(4级)和一般燃烧(3级)区域占80%,易燃(5级)区域占18.66%,难燃(1级)和可燃(2级)区域不到2%。"3S"技术在火险等级研究中的应用为该地区林场的林火防范提供了借鉴。

The Jiufeng national forest park in Beijing as the research area, Using ＂3S＂ technology, the fire danger rating map was painted, considering site conditions, topography factors and anthropic factors synthetically. The fire danger rating of Jiufeng forest was divided to 5 levels. After making statistics and analysis, the area of easier to burning zone （the fourth level） and common zone （the third level） is 80%. The area of easiest burning （the fifth level） is 18.66%. The area of difficult to burn area （the first level） and combustible area （second level） is altogether less than 2%. The signification of ＂3S＂ could provides ideas for the forest fire prevention.