Study of Tree Competition Index Based on Crown Feature

ZHANG Ye-cheng; ZHANG Huai-qing; CHEN Yong-fu; LI Yong-liang; MA Li-yan

The crown competition of Cunninghamia lanceolata pure stands of Huangfengqiao National Forest Farm in Hu'nan Province was studied and the crown competition index was established. The crown competition index was based on Hegyi competition index and its factors were related to crown. From correlation analysis of DBH (diameter at breast height) increment and two competition indexes, the Kendall's tau-b correlation coefficient, Spearman's rho correlation coefficients and R2 was got, which showed that the crown competition index was more relevant to DBH increment than Hegyi competition index. The results also showed that the crown competition index and tree growth had a more substantial correlation. Moreover, the crown competition index could preferably indicate crown's influence on tree growth. Consequently, the crown competition index can be used as the basis of stand growth simulation.

1. Research Institute of Forestry Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China

Received Date: 2015-01-19

Abstract: The crown competition of Cunninghamia lanceolata pure stands of Huangfengqiao National Forest Farm in Hu'nan Province was studied and the crown competition index was established. The crown competition index was based on Hegyi competition index and its factors were related to crown. From correlation analysis of DBH (diameter at breast height) increment and two competition indexes, the Kendall's tau-b correlation coefficient, Spearman's rho correlation coefficients and R2 was got, which showed that the crown competition index was more relevant to DBH increment than Hegyi competition index. The results also showed that the crown competition index and tree growth had a more substantial correlation. Moreover, the crown competition index could preferably indicate crown's influence on tree growth. Consequently, the crown competition index can be used as the basis of stand growth simulation.

HTML

Reference (18)

[1]	Ford E D,Sorrensen K A.Theory and models of inter-plant competition as a spatial process[M].New York.Springer US,1992:363-407.
[2]	邵国凡.红松人工林单木生长模型的研究[J].东北林业大学学报,1985,13(3):38-45.
[3]	邱学清,江希钿,黄健儿,等.杉木人工林竞争指数及单木生长模型的研究[J].福建林学院学报,1992,12(3):309-316.
[4]	黄家荣.马尾松人工林单木竞争指标及生长模型研究[J].林业科技,2001,26(3):1-4.
[5]	惠刚盈,胡艳波.混交林树种空间隔离程度表达方式的研究[J].林业科学研究,2001,14(1):23-27.
[6]	惠刚盈.基于相邻木关系的林分空间结构参数应用研究[J].北京林业大学学报,2013,35(4):1-8.
[7]	惠刚盈,胡艳波,赵中华,等.基于交角的林木竞争指数[J].林业科学,2013,49(6):68-73
[8]	吴巩胜,王政权.水曲柳落叶松人工混交林中树木个体生长的竞争效应模型[J].应用生态学报,2000,11(5):646-650.
[9]	辛营营.浙江青山湖针阔混交林林木竞争态势研究[D].浙江:浙江农林大学,2011.
[10]	唐守正,李希菲.林分生长模型研究的进展[J].林业科学研究,1993,6(6):672-679.
[11]	张宁,张怀清,林辉,等.基于竞争指数的杉木林分生长可视化模拟研究[J].林业科学研究,2013,26(6):692-697.
[12]	蒋娴,张怀清,鞠洪波,等.基于竞争势的林分生长量分配模型研究[J].林业科学研究,2013,26(5):571-577.
[13]	于秀勇.杉木人工林单木生长模型的研究[D].福建:福建农林大学,2009.
[14]	周隽,国庆喜.林木竞争指数空间格局的地统计学分析[J].东北林业大学学报,2007,35(9):42-44.
[15]	Gea-Izquierdo G,Canellas I.Analysis of holm oak intraspecific competition using Gamma regression[J].Forest Science,2009,55(4):310-322.
[16]	雷相东,唐守正.林分结构多样性指标研究综述[J].林业科学,2002,38(3):68-73.
[17]	覃阳平,张怀清,陈永富,等.基于简单竞争指数的杉木人工林树冠形状模拟[J].林业科学研究,2014,27(3):363-366.
[18]	袁晓红,李际平.杉木人工林南北坡向树高－胸径生长曲线研究[J].西北林学院学报,2012,27(2):180-183.

Study of Tree Competition Index Based on Crown Feature

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views