Based on field survey and measurement, and the simulated field burning test by indoor burning bed, a multiple linear regression model was established with factors of fuel load（x1）, temperature（x2）, fuel moisture content（x3）, wind velocity（x4）, aspect（xs）, slope（x6）, forest height（x7）, propagation velocity（x8）, fire line intensity（xg） and prescribed burning width of fire isolated belt（y）. The results showed that the multivari- ate linear model was y=-12.371 ＋4.182x1 ＋0.435x2 ＋0.013x3＋0.083x4＋0.017x5＋0.916x6＋ 0.540x7, and the influences of the factors on the prescribed burning width of fire isolated belt were in the order of x6, x7, x1, x4, x3, x2, x5. This model make it easier to establish fire isolated belt by using fuel characteristics, topographic factors, meteorological factors, and forest stand factors, providing basis for the development of prescribed burning and forest management fire.
对中国知网(CNKI)和Web of Science关于森林火灾风险评估的文献汇总、整理和归纳分析,国内外采用的森林火灾风险评估方法可概括为基于信息扩散理论的评估、基于通用风险评估模型的评估、基于林火预报的评估、基于林火蔓延模型的评估和基于GIS、RS的评估,对森林火灾风险性评估方法进行比较。结果表明,现有主流森林火灾风险评估方法以GIS、RS为主,其他一种或者几种方法为辅,综合评估、长期评估、联合评估以及定量精准评价,结果更具科学性和实用性,是未来研究的重点和方向。
