乐山市森林火险等级区划的研究

在广泛收集、整理乐山市各县区森林资源、植被类型、农业人口分布、气象诸因子及林火资料的基础上,按照林业部制定的《全国森林火险区划》标准,进行森林火险等级区划。全市森林火险等级区划１４个单位（１３个区、市、县、１个林业企业局）,区划为Ｉ级火险区３个,Ⅱ级火险区３个,Ⅲ级火险区８个。同时应用聚类分析、多元回归分析,分析火险因子与历年发生火灾所造成损失的回归关系。

A Study of Forest Fire Danger Rating in Leshan City

In accordane with"the National Standards of Forest Fire Danger Rating"formulated by the Chinese Porestry Ministry,the division of forest fire danger class has been done on the basis of variousfactors such as fored resources,vegetution forms,distribution of agricultural population and meteorology in Leshan City.14 units in the whole city has been divided,including 3 first-class fire danger divisions,3 second-class fire danger divisions and 8 third-class cire danger divisions.In the meantime,relations of fire danger factors with fire losses in the past years have been analysized by accumulationand multiple regression.