内蒙古东北部森林可燃物条件分析  

Analysis on the Forest Fuel Conditions of Northeast Inner Mongolia

作　　者：代海燕 那顺 李兴华 娜日苏 

机构地区：[1]内蒙古气象局生态与农业气象中心,内蒙古呼和浩特010051

出　　处：《安徽农学通报》2012年第9期186-188,共3页Anhui Agricultural Science Bulletin

基　　金：内蒙古科技攻关项目(20070501)内蒙古森林草原预警和评估研究

摘　　要：林火的最终影响将体现在地被物的干燥度上,地表可燃物含水率是林火行为的重要参数,同时它与前期的气象条件紧密相关。该文根据2004-2010年间内蒙古东北部各生态气象站点的可燃物监测数据,分析各站点的可燃物特征与气象因子之间的关系。结果表明:根河市落叶松林枯枝落叶层分布均匀、盖度最大,林内灌木层高度和盖度较高,易发生冲冠火;鄂伦春的柞木和桦树林的枯枝落叶层厚度最低、含水量最高。气象分析结果表明可燃物含水率低于50%,同时空气湿度较低的5-6月份是防火重点时期;可燃物含水量与阶段合计降水量有较好的拟合性,阿尔山、鄂伦春、根河市回归方程都通过显著性检验,可用于该地区的火险等级预测评估。Forest fuel moisture content is a important parameter to forest fire behavior, which represents the early weather conditions. The forest fire ultimately impacts on ground cover Aridity. The paper based on the 2004 -2010 Ecological station combustible＇ s observation data describes the combustible characteristics and analyses the relationship between combustible and meteorological. The results indicated GenHe city Larch litter well distributed and coverage maximum, shrub layer heights and coverage high, which easily lead rush crown fire; Oroqen oak and birch forest have minimum depth litters and maximum moisture content. Study on meteorological conditions indicates that less than 50% fuel moisture content and lower air humidity May and June is the forest fire prevention key periods. Fuel moisture content and total stage rainfall has better fitting. A1 Hill, Oroqen and GenHe city regression equation passed significant test, which can be used to fire danger rating prediction in this area.

关 键 词：森林类型 可燃物含水率 阶段合计降雨量 拟合方程 

分 类 号：S76[农业科学—森林保护学]