森林火损后植物物种多样性特征及空间差异分析

Analysis of Plant Species Diversity Characteristics and Spatial Differences After Forest Fire Damage

为探析攀西地区火损后人工植被恢复情况及不同立地条件下生物多样性特征及其影响因素,以西昌市泸山为研究对象,运用生物多样性相关理论与方法,分析了泸山火损植被恢复后植物物种多样性特征及其影响因素。结果表明:①泸山区域内植物群落4种物种多样性指数均偏低,不同区域内多样性指数差异较大;②不同坡位之间物种多样性有差异,中坡与上坡、下坡之间植物物种多样性差异明显,而上坡与下坡之间并无明显差异;③研究区域不同方位之间植物群落物种多样性指数存在显著性差异,东、北方向植物多样性指数高于其他区域,西、南部区域植物群落物种多样性指数较低。研究区域内植物群落物种多样性因地形地貌和受损程度不同表现出较大的差异性,根据不同的立地条件采取相应措施来恢复区域生态系统,加强区域内生境间的联系,使研究区域内的生态得以恢复与保护。

To explore the restoration of artificial vegetation and the characteristics of biodiversity under different site conditions after fire damage in the Panxi region,this study takes the Lushan area of Xichang City as the research subject.Using relevant theories and methods of biodiversity,this paper analyzes the characteristics of plant species diversity and their influencing factors after the post-fire vegetation restoration in Lushan.The results show that:①The four species diversity indices of plant communities in the Lushan area are all relatively low,with significant differences in diversity indices among different regions;②There are differences in species diversity among different slope positions,with obvious differences in plant species diversity between the middle slope and the upper and lower slopes,while there are no significant differences between the upper and lower slopes;③There are significant differences in species diversity indices of plant communities among different directions within the study area,with the east and north directions having higher plant diversity indices than other areas,while the west and south regions have lower indices.Plant community species diversity in the study area varies greatly due to different topography and geomorphology as well as varying degrees of damage.Appropriate measures should be taken according to different site conditions to restore the regional ecosystem,strengthen connections between habitats within the area,and facilitate the recovery and protection of the ecology within the study area.