摘要
从多样性角度对桉树人工林群落林下植被进行调查分析,结果表明:紫茎泽兰这一外来物种在整个林地的草本层中占据绝对优势,因其生存力强,发展快,危害严重,已影响到桉树人工的经营管理;在生物多样性的对比分析中,发现阳坡的林下植被的Shannon-Wiener指数H′和Simpson指数D都比阴坡的要高,乔木层枝下高与树高比例为0.5左右。
Understory vegetation for Eucalyptus plantation community were investigated from the view of diversity. Result shows that Eupatorium adenophorum,the alien species,gain absolute superiority in the herb layer of the whole woodland;it affect the management of Eucalyptus plantation due to its strong survival,rapid development &serious harm.In the comparative analysis of biodiversity,it is found that the Shannon-Wiener index (H′)and Simpson index(D)of understory vegetation in sunny slope are higher than that in shady slope.The proportion (un-der crown height/tree height of the tree layer)is about 0.5.
出处
《防护林科技》
2015年第8期19-21,共3页
Protection Forest Science and Technology
关键词
桉树
林下植被
生物多样性
Eucalyptus
understory vegetation
biodiversity
