摘要
利用《中国林业统计年鉴》,按年际、季度、月份和行政区域分析了2010-2019年东北地区森林火灾总体趋势,揭示了东北地区森林火灾时空分布特征。结果表明:(1) 2010-2019年东北地区森林火灾发生次数处于较低水平,但重、特大森林火灾较多,森林火灾损失较大;(2)东北地区森林火灾以一般森林火灾为主,2014-2017年为高发期,近几年森林火灾有向大火发展的趋势,2010年、2015-2019年为森林火灾损失严重期,春季和秋季是东北地区森林火灾高发期,区内各地进入林火紧要期的时间随着纬度的升高而向后推移,紧要期持续时间延长;(3)东北地区森林火灾整体发展趋势相似,火灾类型和损失情况存在差异,呈现南部中小火高发、北部大火高发、中部小火频发,南部和北部森林资源损失严重,中部和南部人员伤亡集中的特征。
Using the“China Forestry Statistical Yearbook”,the overall trend of forest fires in Northeast China were analyzed from 2010 to 2019 by year,quarter,month&administrative region,and the spatial and temporal distribution characteristics of forest fires were revealed in Northeast China.Result shows that:1)The number of forest fires in Northeast China from 2010 to 2019 is at a low level,but there are more severe and extraordinarily large forest fires,and forest fire losses are greater;2)Forest fires in Northeast China were dominated by general forest fires,2014-2017 is a high-incidence period.In recent years,forest fires have tended to develop into large fires.2010 and 2015-2019 are periods of severe forest fire losses.Spring and autumn are periods of high incidence of forest fires in Northeast China.Forest fires in the region are critical.As the latitude increases,the duration of the critical period is extended;3)The overall development trend of forest fires in Northeast China is similar,and the fire types and losses are different.There is a high incidence of medium and small fires in the south,large fires in the north,and central China.Frequent small fires,severe loss of forest resources in the southern and northern regions,and concentrated casualties in the central and southern regions.
作者
贾斌英
Jia Binying(Liaoning Forestry Development Service Center,Shenyang 110031,China)
出处
《防护林科技》
2021年第4期18-21,共4页
Protection Forest Science and Technology
关键词
东北地区
森林火灾
时空特征
northeast China
forest fires
temporal and spatial characteristics
