单 位：
深圳市气象局;黑龙江省森林保护研究所;黑龙江省农业气象研究所
关键词：
夏季森林火灾;环境场特征;关键气象因子;黑龙江
摘 要：
利用黑龙江省林区2005年夏季林火火场资料及相应地区的同期和前期气象资料,分析了夏季林火的环境场特征,并着重分析了林火发生期的关键气象因子。研究表明:2005年黑龙江省夏季林火主要集中在大兴安岭林区,雷击火是引起林火的主要原因;林火集中出现在7月27日~8月14日,而且具有明显的日变化,主要发生在15∶00~17∶00时;林火发生期的高温少雨天气,为夏季林火的发生提供了有利的气象条件;日降水量5mm以内、连晴日数3~4d、连旱日数5d以上、日水分蒸发量在3.1~5mm之间、日照时数10d以上、平均风速在1.5~2.5 m/s有利于林火的发生。而且随着冷空气的入侵,在气温下降的阶段仍可能伴随有夏季林火的发生,这与冷锋带来的干雷暴有密切关系。
译 名：
Analyse on Summer Forest Fire Features and Meteorological Environment Conditions of Heilongjiang Province in 2005
作 者：
WANG Mingjie(Shenzhen Meteorologic Bureau,Shenzhen 518001)
关键词：
Summer forest fire;Environment features;Key meteorologic factors;Heilongjiang
摘 要：
The environment features of summer forest fire and the key meteorologic factors during the period of the forest fire happenning were analyzed by using summer forest fires' start-stop time in Heillongjiang Province in 2005.The result shows that summer forest fires which were caused primarily by lighting fire mainly happened in Daxing'anling forest.The fires mainly happened from 27th,July to 14th,August and had obvious daily change.It mainly happened from 3 to 5pm.And high temperature,little rainfall were provide favourable climatic conditions for summer fires.These are favourable to forest fires that daily rainfall within 5mm,sunny weather lasts 3～4 days,drought holds more than 5 days,daily water evaporation between 3.1～5mm,sunlight persists more than 10 days and average windspeed is between 1.5～2.5m/s.From the analyse we can know that summer forest fires may happen which is connected with the dry storm coming,and with cold front when the temperature goes down with the encroachment of cold air.
