摘要
为了解大兴安岭地区雷击火发生的环境特点,提高当地森林火险等级的预报水平,利用当地气象、植被、地形等基础资料,对大兴安岭地区森林雷击火发生的环境进行分析。结果表明：雷击火次数与雷暴次数呈显著的正相关关系,与湿润指数呈显著的负相关关系,研究区有65.29%的雷击火发生在落叶松林;平坡发生雷击火的次数最多,占总次数的36.77%,在坡度为1°~4°的山地发生频繁,占总次数的84.99%,并多集中于海拔200-1300m的范围内发生,其中300-800m区域雷击火发生尤为密集。
To understand the environmental characteristics of lightning fires and improve forecasting accuracy,based on meteorological data,vegetation,terrain and other basic information,the environment of lightning forest fire in Daxing＇an Mountains was analyzed.The results showed that the occurrence of lightning fires had a positive correlation with the thunderstorms and a negative correlation with humidity index.65.29% of lightning fires was occurred in larch forest,and 36.77% of those was occurred in flat slope region,of which 84.99% was occurred in the region of slope 1°-4°,and tended to the region of 200-1300m attitude,in particularly 300-800m.
出处
《中国农业气象》
CSCD
2010年第4期596-599,共4页
Chinese Journal of Agrometeorology
基金
公益性行业(气象)科研专项经费项目(GYHY200706021)
关键词
大兴安岭
雷击火
雷暴
Daxing＇an Mountain
Lighting fire
Thunderstorm
作者简介
杜春英（1964-），女，四川射洪人，硕士研究生，副研究员，主要从事应用气象方面的研究。
通讯作者。E—mail：nefuliudan@163．com
