植物生态学报 ›› 1999, Vol. 23 ›› Issue (3): 238-249.

• 论文 • 上一篇    下一篇

昆嵛山老杨坟阳坡与阴坡半天然植被植物群落生态学特性的初步研究

庄树宏,王克明,陈礼学   

  • 出版日期:1999-03-10 发布日期:1999-03-10
  • 通讯作者: 庄树宏

Preliminary Study on the Ecological Characteristics in Sunny ND shady Slopes of Seminatural Vegetation of Laoyangfen in Kunyu Mountain

Zhuang Shuhong, Wang Keming and Chen Lixue   

  • Online:1999-03-10 Published:1999-03-10
  • Contact: Zhang Qingfei

摘要: 本文对昆嵛山老杨坟阳坡与阴坡半天然植被植物群落的上层(乔木层)和下层(灌木层)的物种优势度、多样性指数、群落的均匀度、相似性指数以及群落的最小面积进行了分析。昆嵛山老杨坟半天然植物群落上层的最小面积应为300m2,下层应为225m2。阳坡与阴坡植物群落的上层和下层优势种的分布格局存在一定差异;乔木层的物种多样性指数,阴坡大于阳坡,灌木层阳坡大于阴坡,但二者的差异水平不显著;两群落乔木层的均匀度指数存在显著差异。阳坡与阴坡植物群落乔木层的相似性指数低于灌木层,并且以相对盖度和相对优势度(相对重要值)为基础统计所得到的群落相似性指数更好地反映了群落间乔木层在结构和功能上的差异。

Abstract: The species dominance and diversity index, evenness and similarity index as well as minimum area of plant communities in both sunny and shady slopes of semi-natural vegetation of Laoyangfen in Kunyu Mount were investigated. 300m2 was taken as the minimum area for tree layers of the plant communities, while 225m2 for shrub layers. There were some differences in distribution patterns of dominant species in tree layers between the two plant communities of sunny and shady slopes. It was discovered that the species diversity index in tree layer of the plant community of shady slope was higher than that of sunny slope, while the result was reversed in the shrub layers of both communities. The statistical difference between the two communities was not significant. The community evenness indexes in tree layers between both communities were of marked difference and that in the community of shady slope was higher. It was found that the similarity index in tree layer of both communities was lower than that in shrub layer. The similarity index of community based on relative coverage (RC) and relative dominance (RIV) had more meanings for analysis of structures and functions of tree layer.