灵空山油松群落物种多样性研究

Species Diversity of Pinus tabuliformis Communities in Lingkong Mountains

依据山西灵空山国家级自然保护区油松林群落的调查结果,研究了油松群落的物种组成,计算了各层次物种重要值,分析了物种多样性。结果表明:(1)在64个样地中发现了177种植物,其中乔木28种,灌木51种,草本98种,隶属于49科110属。(2)乔木层和草本层优势种更为明显。依各层次植物重要值排序,乔木层优势种为油松,草本层优势种为披针苔草,灌木层优势种为土庄绣线菊。(3)多样性指数在各层次表现为:灌木层多样性指数和均匀度指数最高,优势度最低;草本层的丰富度指数最高;乔木层的优势度指数最高,丰富度、多样性和均匀度指数均最低。

According to the investigation results of Pinus tabuliformis community in Lingkong Mountains National Nature Reserve, Shanxi Province,the species composition of Pinus tabuliformis community was studied,the important values of species in each level were calculated,and used Patrick index, Margalef index, Shannon-Winner index, Simpson index, Pielou index analyzed species diversity. Result shows that: 1) A total of 177 species of plants were found in 64 plots, including 28 species of trees, 51 species of shrubs and 98 species of herbaceous plants, belonging to 49 families and 110 genera;2) It has obvious advantage of arbor layer & herb layer dominant species. According to the important values for all three layers, the dominant species of the arbor layer is Pinus tabuliformis , the dominant species of the herb layer is Carex lanceolate , and the dominant species of the shrub layer is Spiraea Pubescens . 3) The diversity index has represented at each level that the diversity index & uniformity index of the shrub layer are the highest,the dominance is the lowest;the richness index of the herb layer is the highest;the dominance index of the arbor layer is the highest, the richness index, diversity index & evenness index are the lowest.