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桉树人工林林下植被结构的研究

Structure of Understorey Vegetation in Eucalyptus Plantations

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【作者】 余雪标钟罗生杨为东龙腾

【Author】 Yu Xuebiao; Zhong Luosheng; Yang Weidong; Long Teng(1 Rubber Cultivation Research Institute, CATAS, Danzhou, Hainan 571737;2 Leizhou Forestry Bureau, Shuixi, Guangdong 524348)

【机构】 中国热带农业科学院橡胶栽培研究所!海南儋州571737广东省雷州林业局!广东遂溪524348

【摘要】 桉树林下植被有灌木一草本型和纯草本型2种类型,共有植物种类18种,出现最多的样地仅11种。灌木一草本型植被分布于离地面150cm范围,纯草本型植被分布于离地面40cm范围。随林龄增大,林下植被物种丰富度降低,多样性下降,生物量减少。造林密度增加,物种丰富度降低,多样性下降。随这栽代次增加,林下植被生物量和物种多样性下降,但不能成为林分生产力下降的理由。轮作西瓜可增加林下植被生物量和物种多样性,这对桉树林下植被的恢复与重建提供了可能性。

【Abstract】 There were two patterns of understorey vegetation in Eucalyptus plantations:shrub/herb and pure herb, and a total of 18 species of Plants were found underthe plantstions. As many as 11 species of the undergrowth were found in one sample plot. The shrub/herb vegetation was distributed within 150 cm from the groundand pure herb vegetation within 40 cm. The abundance and diversity of the speciesof the undergrowth decreased with the age and stand density. The biomass of theundergrowth decreased with the age. The biomass and species diversity of the undergrowth decreased with continuous rotation, which was, however, not considered as acause to low stand productivity. Rotation by watermelon increased the biomass andspecies diversity of the undergrowth, indicating some possibility of restoration and reestablishment of understorey vegetation.

【关键词】 桉树人工林林下植被结构
【Key words】 Euculyptus plantationunderstorey vegetationstructure
【基金】 国际热带木材组织资助
  • 【文献出处】 热带作物学报 ,Chinese Journal of Tropical Crops , 编辑部邮箱 ,1999年01期
  • 【分类号】S792.39;
  • 【被引频次】124
  • 【下载频次】563
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