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Forest and Grassland Resources Research >

2021 , Vol. 0 >Issue 4: 69 - 78

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2021.04.010

Scientific Research

Research on the Difference of Mingling Degree under Different Selection Schemes of Adjacent Trees

  • Dongsheng QING ,
  • Jiang ZHANG ,
  • Jianjun LI ,
  • Jinxiang PENG ,
  • Shuai LIU
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  • 1. Central South University of Forestry Science and Technology,Changsha 410000,China
    2. Hunan Applied Technology College,Changde,Hunan 415000,China
    3 National Engineering Laboratory of Forestry Ecological Application Technology in South China,Changsha 410000,China

Received date: 2021-06-07

  Revised date: 2021-07-14

  Online published: 2021-09-26

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Abstract

In order to clarify the difference of stand mingling degree under different adjacent tree selection schemes,and find the evidence of which stand type is suitable for different adjacent tree selection schemes,this paper can provide reference for the research of stand spatial structure related issues.31 sample plots were set up in Longhu Mountain of South Dongting Lake area according to the types of aggregated distribution stand,random distribution stand,uniform distribution stand and sparse distribution stand.The methods based on "1+4" nearest adjacent trees,radius R(R=3.05 m) circle and Voronoi diagram were used to solve the number of adjacent trees per plot,the mingling degree of single tree and the average mingling degree of stand in various places,and explore the correlation between different schemes in different forest types.1) From the point of view of the overall stand average mingling degree,the average mingling degree values of the other stands in the experimental plots were not greatly different,except that the average mingling degree value of the adjacent trees based on the radius R(R=3.05 m) circle in the sparse distribution was low.2) From the point of view of individual tree,the mingling degree values of target trees in different stand types were different under different adjacent tree selection schemes.3) The correlation between "1+4" nearest adjacent tree and Voronoi diagram was relatively high in different stand types.Different selection schemes of adjacent trees had their own advantages under different stand types,but on the whole,the stability and accuracy of the adjacent selection schemes based on "1+4" nearest adjacent tree and Voronoi diagram were relatively high in solving mingling degrees of different stand types.

Key words： mingling degree; stand spatial structure; based on "1+4" nearest adjacent tree; Voronoi diagram; based on radius R circle

Cite this article

Dongsheng QING , Jiang ZHANG , Jianjun LI , Jinxiang PENG , Shuai LIU . Research on the Difference of Mingling Degree under Different Selection Schemes of Adjacent Trees[J]. Forest and Grassland Resources Research, 2021 , 0(4) : 69 -78 . DOI: 10.13466/j.cnki.lyzygl.2021.04.010

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