基于物元可拓法的长白落叶松人工林采伐迹地火险等级评价

Fire Risk Rating of Larix gmelinii Logging Slash based on the Matter-element Extension Method

长白落叶松人工林采伐迹地火灾危险具有显著的模糊性和不确定性。为合理评价采伐迹地火险情况,利用物元可拓理论建立评价模型。在此基础上,选择了关于研究区域气象、地理、人为活动及可燃物等因素的12个评价指标,对研究区域内的15个采样点进行火险评估。结果表明,15个采样点中低度火险样点有11个,占全部采样点的73.3%;无火险的样点2个,占13.3%;中度火险和高度火险样点各1个,各占6.7%。通过与2种经典的采伐迹地火险评价方法比较可知,物元可拓法应用于此方面研究是可行的,运用MATLAB2014a进行模型计算,简便快捷。

The fire risk of Larix gmelinii logging slash area iSambiguouSand uncertain.In order to evaluate the fire risk,the evaluation model waSestablished based on the matter-element extension theory.12 indexeSsuch aSthe regional meteorological,geography,human activity and combustible materialSect.were selected to evaluate the fire risk of15 sampling plotSin the study area.The resultSshowed that there were11 low-fire sampleSin the15 sampling sites,which accounted for 73.3% of the total.There were2 fire-free samples,which accounted for13.3%.There were1 moderate fire risk and1 high fire risk plots,accounted for 6.7% respectively.Compared with the classical fire hazard assessment methods,the matter-element extension method iSfeasible,and it iSsimple and convenient to use MATLAB2014a for modeling.