[1]ZHAO Yang,YU Xin-xiao,SONG Si-ming,et al.Spatial Structure Characteristic of Quercus variabilis Forest in Xishan Mountain of Beijing[J].Research of Soil and Water Conservation,2011,18(03):41-47.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
18
Number of periods:
2011 03
Page number:
41-47
Column:
Public date:
2011-06-20
- Title:
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Spatial Structure Characteristic of Quercus variabilis Forest in Xishan Mountain of Beijing
- Author(s):
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ZHAO Yang, YU Xin-xiao, SONG Si-ming, ZHANG Yi, YANG Zhi-ge, WANG He-nian, DENG Wen-ping
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Key Lab of Soil and Water Conservation & Desertification Combating of Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
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- Keywords:
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3D laser scanning; cloud point; water conservation; spatial structure; point pattern analysis
- CLC:
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S718.5;S727.21
- DOI:
-
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- Abstract:
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This study investigated the application of terrestrial laser scanning for providing quantitative forest parameters at the plot-level by using ’multi-stop’ scanning method for determining stand parameters such as the tree height,basal area and other parameters.This paper described the spatial structural characteristics of one plot-level stand of Quercus variabilis forests in Xishan Mountain of Beijing using mingling degree,neighborhood comparison and the method of point pattern analysis.The results showed that there were sixteen species in arbor layer of Quercus variabilis forests and the stand has a vertical structure showing a typical structure of the complex character.The average mingling degree of the whole stand was 0.32,suggesting the low mingling degree of stands.In the spatial structural units,Quercus variabilis,Pinus tabulaeformis,Quercus dentata and Robinia pseudoacacia were mainly of dominant,sub-dominant and intermediate trees,accounting for 67%,51%,71% and 57% of the total plants of the populations,respectively,while the advantages of other populations were not obvious.Quercus variabilis took a significant aggregation distribution on the research scale(30m).The space correlation of Quercus variabilis and Acer truncatum is mainly negative association on the research scale,the interspecific competition is very fierce.