中国农业气象

• 论文 • 上一篇    下一篇

大兴安岭地区雷击火发生环境分析

杜春英;于成龙;刘丹;   

  1. 黑龙江省气象科学研究所;
  • 出版日期:2010-08-10 发布日期:2010-08-10
  • 基金资助:
    公益性行业(气象)科研专项经费项目(GYHY200706021)

Environmental Analysis on Lightning Forest Fires in Daxing'an Mountain

DU Chun-ying,YU Cheng-long,LIU Dan(Heilongjiang Institute of Meteorological Sciences,Harbin 150030,China)   

  • Online:2010-08-10 Published:2010-08-10

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。

关键词: 大兴安岭, 雷击火, 雷暴

Abstract: 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.

Key words: Daxing'an Mountain, Daxing'an Mountain, Lighting fire, Thunderstorm