【摘要】 对雷州半岛桉树人工林林下植物多样性及生物量进行了调查与研究 ,结果表明 :桉树人工林林下植物多样性及生物量主要与林地土壤类型、林分郁闭度有关 ;林下植物的生长发育随林龄对林分郁闭度的改变而改变 ;不同桉树种类之间及桉树与相思类树种之间林下植物的物种丰富度、多样性和生物量均差异不显著。这说明 ,桉树人工林林下植物多样性低并不是桉树树种本身造成的。更多还原

【Abstract】 This paper makes an investigation as well as a study of the undergrowth plant diversity and biomass of eucalyptus plantation in Leizhou Peninsula. The result indicates that the undergrowth plant diversity and biomass of eucalyptus plantation are mainly related to the soil type of the forest stand and the forest canopy density. The growth of the undergrowth plants varies with the age of the forest and the degree of the forest canopy density. There is no remarkable difference of species richness, diversity and biomass of the undergrowth plants between different kinds of eucalypti,and between eucalypti and other kinds of acacia. The low diversity of the undergrowth plant of eucalyptus plantation is not caused by the eucalypti themselves.更多还原