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FOREST RESOURCES WANAGEMENT ›› 2021, Vol. 0 ›› Issue (5): 80-86.doi: 10.13466/j.cnki.lyzygl.2021.05.011

• Scientific Research • Previous Articles     Next Articles

Spatial Structure Characteristics of Betula platyphylla Secondary Forest in Daxing'anling of Inner Mongolia

ZHANG Xianglong(), WANG Bing(), ZHANG Qiuliang   

  1. Forestry College,Inner Mongolia Agricultural University,Hohhot 010019,China
  • Received:2021-07-05 Revised:2021-07-20 Online:2021-10-28 Published:2021-11-29
  • Contact: WANG Bing E-mail:1031789179@qq.com;wbingbing2008@126.com

Abstract:

The spatial structure of Betula platyphylla secondary young and middle aged forest in Daxing'anling,Inner Mongolia,was analyzed,which provided a scientific reference for the scientific management and function improvement of natural secondary young and middle aged forest in Daxing'anling.Taking the Betula platyphylla secondary young and middle aged forest as the research object,the spatial structure characteristics of Betula platyphylla secondary forest were analyzed by using single distribution and binary distribution based on the calculations of uniform angle index,dominance and mingling.The results showed that:In terms of single distribution,three plots were randomly distributed;the random distribution of trees accounted for 51%~59%.The mean dominance of Betula platyphylla in three plots were 0.481,0.521 and 0.466,respectively;and the growth of whole stand was in the moderate state.Three plots were weakly mixed with low stand heterogeneity,and the mingling degrees were 0.175,0.131 and 0.183,respectively.In terms of binary distribution,there were more inferior trees distributed in cluster state.While in random state,there were very few trees with high mingling,and more oppressed trees with low mingling distributed.There were some problems in Betula platyphylla secondary young and middle aged forest in Daxing'anling,Inner Mongolia,such as cluster distribution of some trees and low mingling degree of tree species.It was necessary to adjust the stand spatial structure through measures and to improve the mingling and maintain the healthy and stable development of forest ecosystem.

Key words: Daxing'anling, Betula platyphylla, secondary forest, spatial structure, binary distribution

CLC Number: