速生桉等3种人工林的物种多样性特征  

Eucalyptus and other 3 Kinds of Artificial Forest Species Diversity Characteristics

作　　者：韦春义[1] 

机构地区：[1]广西生态工程职业技术学院,广西柳州545004

出　　处：《福建林业科技》2014年第3期12-15,31,共5页Journal of Fujian Forestry Science and Technology

基　　金：2011年广西高等学校一般资助科研项目(桉树人工林生态与可持续经营技术研究;20010YB169)

摘　　要：以广西国营沙塘林场的速生桉(广林9)、马尾松、湿地松3种人工纯林的生物群落调查为基底,研究不同类型林分生物多样性特征。结果表明:研究区不同类型林分之间的物种多样性指数无明显差异,速生桉人工林物种种类和数量在很大程度上取决于该立地原有植被和生物的种类和数量;研究区草本层的Shannon-Weiner多样性指数、Simpson优势度指数、Margalef丰富度指数总体比灌木层小,速生桉人工林草本层和灌木层分层不明显,灌木层的物种丰富度和多样性指数高于草本层。In order to get the characteristics f species diversity in plantations ,Eucalyptus grandis ＆#215;E.urophylla,Pinus massoniana Lamb ＆amp; Pinus elliottii is to be the samples in Shatung State Forest in Guangxi Province.The results showed that：there is no any difference in different plantations zones.It depends largely on the type and quantity of original vegetation of the site and the type and number of organisms;Shannon-Weiner diversity index ,Simpson dominance index ,Margalef richness index generally is smaller than herbaceous layer in the mainly research area.There is no significant difference in Eucalyptus grandis ×E.urophylla plantations be-tween herbaceous layer and shrub layer.Richness of shrub species and diversity index in the herbaceous layer is higher than in the shrub layer.

关 键 词：速生桉 马尾松 湿地松 人工林 物种多样性 

分 类 号：S792.41[农业科学—林木遗传育种] S718[农业科学—林学]