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为确定不同环境因子对塞罕坝机械林场林下草本植物物种多样性的影响程度,通过样地调查法对该区物种进行了调查,并对调查数据采用灰色关联法进行了处理和分析。结果表明:调查区共有林下草本植物79种,优势种主要为细叶苔草、小花糖芥、中华隐子草;草问荆、蒲公英、唐松草等为常见种;苦荬菜、银莲花等为偶见种。对物种丰富度影响最大的2个林分因子分别是树高和胸径,对物种丰富度影响较大的生境因子依次为海拔高度和坡度。
In order to determine the degree of influence of different environmental factors on the species diversity of understory herbs in Saihanba mechanical forest farm, the species of the area were surveyed by plot survey method and the survey data were processed and analyzed by the gray correlation method. The results showed that there were 79 species of understory herbs in the survey area, and the dominant species were C. septentrionalis, F. montmorillonum, C. sinensis, For occasional species. The two stand factors that had the most significant impact on species richness were tree height and DBH, respectively, and the habitat factors that greatly influenced species richness were altitude and slope.