华山松针叶耐火性模型初建研究

Model Construction for Fire Resistance of the Leaves of Pinus armandii

在2009年森林防火紧要期,依据对华山松林木针叶进行的耐火性试验结果,建立了华山松针叶死亡率y与枝的直径x1、针叶长度x2、受热时间x3、受热温度x4的关系模型,即y=4.085-6.757x1-3.537x2+0.302x3+0.930x4。分析表明,影响华山松针叶耐火性的因子依次为x4>x3>x1>x2。

In the crucial period for forest firs protection of 2009 in Yunnan Province, we constructed a model for fire resistance of the leaves of Pinus armandii based on the relationship of the leaves＇ mortality （ y）, diameter of leaf （ x1 ）, length of leaves （ x2 ） with the heating duration （x3 ）, and heating temperature （x4）. The model is： y = 4. 085 - 6. 757x1- 3.537x2＋ 0. 302x3＋ 0. 930x4. And, the factors of fire resistant ability is： x4〉 x3〉 x1〉 x2.