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草海流域植物群落结构数量分类与排序(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年03期
Page:
47-52
Column:
研究论文
publishdate:
2013-05-20

Article Info:/Info

Title:
Numerical classification and ordination of forest communities in Caohai basin
Author(s):
WU Hua1ZHANG Jianli12FAN Yiwen1YU Lifei1*YAN Lingbin1YUAN Congjun1
1. The Research Center of Karst Ecological Environment, Guizhou University, Guiyang 550025,China;
2. Institute of Mountain Resources of Guizhou Province, Guizhou Academy of Sciences, Guiyang 550001, China
Keywords:
forest community TWINSPAN classification DCA ordination CCA ordination Caohai basin
Classification number :
S718.5
DOI:
10.3969/j.issn.1000-2006.2013.03.009
Document Code:
-
Abstract:
In this research, a typical sampling method was adopted to sample in forests of Caohai basin. And based on the data from 22 sample plots, forest communities in Caohai basin were investigated using TWINSPAN and DCA and CCA in order to analyze the structure of the communities.(1)The results of TWINSPAN classification indicated that these quadrate were classified into 7 types based on the species of Caohai basin, and they were further verified in the DCA two-dimensional ranking diagram.(2)CCA ordination results showed that the contribution in descending order was elevation,aspect, slope,and slope position.The first axis expressed the gradient of altitude among the communities,indicating the function of temperature.On the other hand,the second axis showed significant correlation with slop and aspect,which suggested that humidity,illumination and other things played key roles in community assembly.The results also indicated that the distribution of the vegetation communities was mainly impacted by two environment factors including elevation and aspect.At the same time, the vertical distribution character was obvious.

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Last Update: 2013-05-31