分析了与北京八达岭林场潜在林火险情密切相关的气候、地形、植被和可燃物四类因素。气候潜在林火险情主要是防火期内温度高、湿度小、风多、风大、植物凋萎期长。陡急险坡和鞍部构成防火和灭火危险地形因素。易燃针叶和阔叶树种多、林下灌木和多年生草本茂密、幼龄林和中龄林面积比例高、易燃可燃物载量大、水平和垂直分布连续性强为火险的植被因素。
The paper analyzes the four factors of climate,topography,vegetation and forest fuel which have close correlation to forest fire safety in Badaling Forest Centre of Beijing.The potential climatic factors of forest fire dangers are high temperature,low humidity,frequent and strong winds and long plant withering period.The topographical factors for forest fire control are steep slope,rapid slope and necks.The coniferous and broadleaf trees have more flammability,shrubs and renascent herbs in forest are dense,the area of sapling forest and young forest is large in proportion and inflammable fuels accumulated in the forest and the continuous vertical and horizontal distribution of vegetation are also the hidden dangers of forest fire.
[1] 高国平,王月.辽宁东部地区森林地被可燃物及其燃烧性的研究[J].沈阳农业大学学报,2004,35(1):24-28.
[2] 鲁绍伟,余新晓,刘凤芹,等.北京八达岭林场森林燃烧性及防火措施研究[J].北京林业大学学报,2006,28(3):109-114.
[3] 牛树奎,崔国发,雷鸣,等.北京喇叭沟门林区森林燃烧性及防火区研究[J].北京林业大学学报,2000,22(4):109-112.
[4] 田晓瑞,舒立福,阎海平,等.北京地区森林燃烧性研究[J].森林防火,2004(1):23-24.
[5] 张家来,曾祥福,胡仁华,等.湖北主要森林可燃物类型及潜在火行为研究[J].华中农业大学学报,2002,21(6):550-554.
[6] 郑焕能.人工针叶林燃烧性的研究[J].林业科学,1983,19(2):145-152.
[7] 王立明,蒋丽伟,牛树奎,等.森林易燃可燃物垂直连续性指数模型研究[J].林业资源管理,2012(6):118-119.
