桉树林下植被他感作用与植物多样性分析  

Analysis of Allelopathy & Biodiversity of Plant in Eucalyptus spp. Stand

作　　者：曾群英[1] 刘素青[1] 周元满[1] 李际平[2] 

机构地区：[1]广东海洋大学农学院,广东湛江524088 [2]中南林业科技大学资环学院

出　　处：《防护林科技》2010年第4期18-20,共3页Protection Forest Science and Technology

基　　金：国家自然科学基金(30771724);广东省自然科学基金(8152408801000007);湖南省教育厅重点课题(05A027)

摘　　要：桉树是中国南方最重要的商品用材树种,桉树林的生态性一直备受争议。文章用扩大圆样地法,研究了桉树林下的他感作用和植物多样性。结果表明,桉树林下的他感作用明显,作用范围为0～15D,其中他感作用最强区域为5～10D范围。在研究区内,对含羞草、山芝麻和桃金娘的他感作用较为敏感。桉树林下的植物多样性较丰富,有15种植物之多。Eucalyptus spp. whose ecological effect is always the focus of the contention is an important commercial timber species. Allelopathy ＆ plant diversity of Eucalyptus were stndied by circularity magnified plot method. Result shows that： allelopathy of undergrowth Eucalyptus whose action sphere is 0-15D is obvious;among them the strongest region is 5-10D. Allelopathy of Eucalyptus on Mimosa pudica,Helicteres angustifolia ＆ Rhodomyrtus tomentosa are more sensitive than that of others. Plant diversity of undergrowth Eucalyptus which have 15 species is much richer.

关 键 词：桉树 他感作用 生物多样性 

分 类 号：S792.390.2[农业科学—林木遗传育种]