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采取数据处理、补充调查、统计分析等方法,根据森林燃烧环网理论,以林火三要素在森林燃烧环网上分布的火险值作为定量划分标准,将苍山的林地划分为3个火险等级区;苍山林地燃烧类型中,易燃类占87.9%;特级火险区和一级火险区的面积达20731.9 hm2,占林地面积的69.4%。研究表明,大理苍山森林火险等级高,火灾危险性大,属全国高危火险区域。
Taking the methods of data processing, supplementary investigation, statistical analysis and other methods, according to the theory of forest burning ring network, the fire risk values of the three elements of forest fire distribution on the forest burning ring network are taken as the quantitative standard, and the forest land in Cangshan is divided into three fire risk grade zones; Cangshan forest burning type, flammable accounted for 87.9%; super-fire zone and a fire area of 20731.9 hm2, accounting for 69.4% of the area of forest land. Studies have shown that Dali Cangshan high level of forest fire risk, fire danger, is a national high-risk fire area.