【摘要】 野生竹林的垦复利用是一种持续的综合性的干扰,垦复干扰对糙花穗竹林的物种多样性有明显的影响,降低了样地内的物种总种数,尤其对灌木层的物种丰富度有较大的影响;但垦复反而使草本层的丰富度有所提高.垦复干扰使林地的优势种的变化十分明显,未垦复样地的优势种以耐荫或半耐荫植物为主,垦复样地的优势种则以不耐荫植物为主.垦复样地的多样性指数和均匀度指数均低于未垦复样地,而优势度指数均显著高于未垦复样地.垦复样地与未垦复样地的共有种数较少(最少为7种),二类样地的相似指数较低,最低仅0.173.而垦复样地间的共有种数较多(最多为21种),相似指数最大达0.656.更多还原

【Abstract】 Reclaimation of wild bamboo forest was a kind of unremitting,integrative disturbance.The research results indicated that this kind of reclaiming disturbance on species diversity in Oligostachyum scabriflorum forest had notably decreased the total species number and shrub species number in the investigated stands,but increased the herb species number.The dominant species in(reclaimed) stands were shade-intolerant plants,whereas tolerant ones in wild stand.The Shannon-Wiener diversity index and Simpson evenness index in reclaimed stands were less than that in wild stand.Pielou dominance index was in reverse.The common species and similar indexes between the reclaimed and wild stands were in small numbers (the least numbers being 7 species and 0.173),but that between the reclaimed stands were larger(the largest number being 21 species and 0.656).更多还原