摘要
该文以对大兴安岭塔河林业局火烧迹地设置的不同强度火烧样地为基础数据,分析了不同火烧强度(重度、中度、轻度)对乔木更新和林下植被的影响。结果表明:不同火烧强度(重度、中度、轻度)对白桦和杨树的更新有显著影响,重度火烧促进了白桦和杨树的地径和树高生长,有利于白桦和杨树等先锋树种的更新。林火对林下植物种类数量影响不大,但使得林下植物优势种群发生了改变,杜鹃、笃斯越桔、蒿类、小叶樟等逐渐成为优势种群,重度火烧使森林生态系统有向沼泽化方向发展的趋势。
This paper analyzed the effects of different fire intensity(severe,moderate and light)on tree regeneration and undergrowth vegetation based on the data of different intensity fire sample plots in Tahe Forestry Bureau of Daxing'an Mountains.The results showed that different fire intensity(severe,moderate and light)had a significant impact on the regeneration of birch and poplar.Severe fire promoted the growth of ground diameter and tree height of birch and poplar,which was conducive to the regeneration of pioneer species such as birch and poplar.Forest fire has little impact on the number of undergrowth plant species,but it has changed the dominant population of undergrowth plants.Rhododendron,Vaccinium uliginosum Linn,Artemisia,Calamagrostis angustifolia,etc.have gradually become the dominant population.Severe fire has made the forest ecosystem develop towards marsh.
作者
陈汉江
Chen Hanjiang(Forest Resources Monitoring Center of State Forestry and Grassland Administration,Jiagedaqi 165000,Greater Khingan Mountains,China)
出处
《林业科技情报》
2024年第1期30-32,共3页
Forestry Science and Technology Information
关键词
林火
火烧强度
林下植被
乔木更新
Forest fire
fire intensity
undergrowth vegetation
tree regeneration
