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作 者:于方冰 郭蒙 郭笑怡 周粉粉 钟超 常禹 YU Fang-bing;GUO Meng;GUO Xiao-yi;ZHOU Fen-fen;ZHONG Chao;CHANG Yu(School of Geographical Sciences,Northeast Normal University,Changchun 130024,China;Key Laboratory of Forest Ecology and Management,Chinese Academy of Sciences,Shenyang 110016,China)
机构地区:[1]东北师范大学地理科学学院,吉林长春130024 [2]中国科学院森林生态与管理重点实验室,辽宁沈阳110016
出 处:《东北师大学报(自然科学版)》2023年第1期123-130,共8页Journal of Northeast Normal University(Natural Science Edition)
基 金:国家重点研发计划项目(2018YFE0207800);国家自然科学基金资助项目(41871103);吉林省科技发展计划项目(20190103151JH);吉林省教育厅“十三五”科学技术项目(JJKH20201172KJ).
摘 要:基于春季和秋季防火期的野外调查数据,利用BehavePlus林火行为预测系统,分别对长白山风倒区春季和秋季防火季的火行为进行了模拟,研究了长白山风倒区火行为特征.结果表明:风倒区4个重要火行为指标(火蔓延速率、火线强度、火焰长度和火蔓延距离)的模拟结果春季都明显高于秋季;火行为与坡度关系较小,与风速关系较大;春季火灾非常容易达到重度火势,难以进行扑救,春季防火期火灾预防尤为重要.结合保护区的实际情况,从扑救人员和扑救物资的合理布局,改善现有扑救装置和促进风倒区林地演替等方面提出了火灾预防和扑救的建议.There has been no large-scale forest fire in the windfall area of Changbai Mountain in the past 60 years,which leads to a large accumulation of combustible material on the surface and a very high fire risk level.Because of the special type of fuel,the windfall area become the key of fire prevention in the Changbai Mountain protected areas.Therefore,it is of great significance for forest fire prevention and management to accurately simulate the fire behavior in this area.Based on the survey data of sample sites in spring and autumn fire prevention periods,this study used the BehavePlus forest fire behavior prediction system to simulate the fire behavior in the wind-blown area of Changbai Mountain respectively,tried to find the fire behavior characteristics and provide guidance for fire prevention in this area.The results show that the simulation results of four important fire behavior indexes(fire spread rate,fire line intensity,flame length and fire spread distance)in the windfall zone are significantly higher in spring than in autumn.The fire behavior has less relation with slope and more relation with wind speed.For the spring fire,it is very easy to reach the severe fire and difficult to put out,which indicates that the fire prevention is particularly important in the spring fire prevention period in this region.At the same time,according to the actual situation of the protected area,some suggestions on fire prevention and fighting are put forward from the aspects of reasonable distribution of fighting personnel and fighting materials,improvement of existing fighting equipment and promotion of forest succession in windfall area.
关 键 词:长白山风倒区 火行为模拟 可燃物含水率 BehavePlus
分 类 号:S762.2[农业科学—森林保护学]
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