| 油松林火烧迹地恢复初期林下植被特征 |
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| 引用本文： | 武秀娟,奥小平.油松林火烧迹地恢复初期林下植被特征[J].西北林学院学报,2022,37(5):155-161. |
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| 作者姓名： | 武秀娟 奥小平 |
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| 作者单位： | （山西省林业和草原科学研究院，山西 太原 030012） |
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| 摘 要： | 以山西省沁源县2019年“3.29”森林火灾形成的油松林火烧迹地为研究对象，按火烧程度将火烧迹地划分为重度、中度、轻度3类，通过调查林下灌草样方，分析火烧迹地林下植被组成和物种多样性特征。结果表明，不同强度林火干扰后林下群落物种组成明显不同，植物种类在重度火烧迹地内最多，轻度火烧迹地次之，中度火烧迹地最少；林下物种多样性以重度火烧迹地内最高，不同强度火烧迹地林下植物群落间均表现为极不相似；不同强度火烧迹地林下植物群落多样性均达到了“较好Ⅲ”级及以上。油松林重度火烧迹地恢复初期林下植被的组成及物种多样性均较轻、中度的高，火烧在一定程度上可促进林下植被的生长。
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| 关 键 词： | 火烧强度 物种多样性指数 林下植被 自然恢复 油松 |
The Characteristics of Understory Vegetation in the Early Stage of Restoration of Burned Pinus tabuliformis Forests |
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| WU Xiu-juan,AO Xiao-ping. The Characteristics of Understory Vegetation in the Early Stage of Restoration of Burned Pinus tabuliformis Forests[J].Journal of Northwest Forestry University,2022,37(5):155-161. |
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| Authors: | WU Xiu-juan AO Xiao-ping |
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| Institution: | （Shanxi Academy of Forestry and Grassland Sciences,Taiyuan 030012,Shanxi,China） |
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| Abstract: | The trails of a fire occurred on 29th March,2019 in Qinyuan County of Shanxi Province were taken as the study objects,which were classified into 3 levels according to the degree of burning:mildly,moderately,and severely burned sites.The vegetation composition and species diversity characteristics were analyzed by investigating the undergrowth vegetations of Pinus tabuliformis forests.The results showed that the species composition of understory vegetation was significantly different after different intensity of forest fire disturbance.The species number was the most in the severely burned site,followed by the mildly burned site,and the least in the moderately burned site.The understory vegetation diversity was the highest in the severely burned site,and there was no similarity among understory vegetation communities in differently burned sites.The diversity of each understory vegetation community in differently burned intensities reached "well Ⅲ"or above level.Species number was the richest and the diversity index was the highest in the severely burned site,indicating that fire could promote the growth of understory vegetation to a certain extent. |
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| Keywords: | fire intensity diversity index undergrowth vegetation natural restoration Pinus tabuliformis Pinus tabuliformis |
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