【作者】 温远光； 李信贤； 元昌安； 陆俊标； 覃朝忠；

【Author】 Wen Yuangguang,Li Xinxian,Yuan Changan (Forestry College,Guangxi Agricultural University.Nanning 530001) Lu Junbiao Qin Chaozhong (Management of Damingshan Natural Reserve of Guangxi,Wuming 530115)

【机构】 广西农业大学林学院； 广西大明山自然保护区管理处；

【摘要】 本文对大明山天坪区原生林、择伐林和次生林的多样性进行了比较研究.结果表明,皆伐后20年恢复起来的次生林具有较高的种丰富度和多样性,其群落的D和J分别是5.0728和0.6682.择伐林和原生林的多样性较低,其D和J分别为2.9936、0,4031和2.9108、0.4021.不同采伐方式群落层的多样性分异程度依灌木层、层间植物、草本层和乔木层的顺序减少.各类型乔木层的多样性较高且十分相近;而灌木层、草本层和层间植物的多样性差异很大,以次生林较高.利用择伐方式砍伐森林更有利于原生物种的保持和恢复.更多还原

【Abstract】 In this paper,the species diversity of original forest,selective cutting forest and secondary woody growth in Damingshan Mountain Tianping area are researched comparatively.The results show that the species richness and diversity of secondary woody growth restoring 20 years after clean felling evergreen broad-leaved forest are higher,and their D and J are 5.0728 and 0.6682 for community, respectively:but the original forest and selective cutting forest are lower,their D and J are 2.9936 and 0.4031 for the original fotest,2.9108 and 0.4021 for selective cutting forest respectively.The diversity of layers of communities in different cutting ways differentiates according to thereducing sequence from shrub to liana to herb to tree strata.The D and J of tree strata in different types are higher and nearer,but D and Jof shrub layer,herb layer and liana are large variance,and higher for secondary woody gowth.It is of great advantage to sustenance and restoration of original species in forest using selective cutting way cut forest.更多还原