Structure Characters of Pinus tabulaeformis Natural Forest on Xiaolong Mountain

LIU Wen-zhen; ZHAO Zhong-hua; HUI Gang-ying; ZHANG Song-zhi

The structure characters of Pinus tabulaeformis natural forest on Xiaolong Mountain, Gansu Province was studied by fixed sample survey of each tree positioning data with statistical software, the result showed that the tree composition of Pinus tabulaeformis natural forest was abundants, there had 18 tree species in community dominated by P. tabulaeformis, however, the degree of tree species segregation was lower and the average value of mingling was weak. The diameter at breast height (DBH) distribution of forest stand followed a multi-shaped peak curve and the DBH distribution of P. tabulaeformis population approximated to normal distribution and it was well fitted by Weibull function, the tree height increased with the tree DBH increasing and the relationship between tree height and DBH was well fitted by power function. The individual size of DBH, tree height and crown width of P. tabulaeformis in stand was significantly differentiated; the average state belonged to medium. Both the horizontal distribution patterns of stand and P. tabulaeformis population were random distributed.

1. Xiaolongshan Research Institute of Forestry of Gansu Province, Tianshui 741020, Gansu, China

2. Research Institute of Forestry, Chinese Academy of Forestry,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091, China

Received Date: 2011-02-12

Abstract: The structure characters of Pinus tabulaeformis natural forest on Xiaolong Mountain, Gansu Province was studied by fixed sample survey of each tree positioning data with statistical software, the result showed that the tree composition of Pinus tabulaeformis natural forest was abundants, there had 18 tree species in community dominated by P. tabulaeformis, however, the degree of tree species segregation was lower and the average value of mingling was weak. The diameter at breast height (DBH) distribution of forest stand followed a multi-shaped peak curve and the DBH distribution of P. tabulaeformis population approximated to normal distribution and it was well fitted by Weibull function, the tree height increased with the tree DBH increasing and the relationship between tree height and DBH was well fitted by power function. The individual size of DBH, tree height and crown width of P. tabulaeformis in stand was significantly differentiated; the average state belonged to medium. Both the horizontal distribution patterns of stand and P. tabulaeformis population were random distributed.

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Reference (14)

[1]	惠刚盈,赵中华,胡艳波.结构化森林经营指南[M].北京:中国林业出版社,2010
[2]	Moeur M. Characterizing spatial patterns of trees using stem mapped data[J]. Forest Science, 1993, 39(4): 756-775
[3]	汤孟平. 森林空间结构分析与优化经营模型的研究 .北京:北京林业大学, 2003
[4]	蔺雨阳,王得祥,雷瑞德,等.秦岭西段天然油松种群的数量特征研究[J].水土保持研究,2009,16(4):180-185
[5]	胡宏.浅谈小陇山林业实验局油松造林技术[J].甘肃科技,2008,24(24):174-175
[6]	赵中华,袁士云,惠刚盈,等.甘肃小陇山5种不同灌木林改造模式对比分析[J].林业科学研究,2008, 21(2): 262-267
[7]	赵中华,袁士云,惠刚盈,等.经营措施对林分空间结构特征的影响[J].西北农林科技大学学报:自然科学版,2008,36(7):135-141
[8]	孟宪宇.测树学[M]:第二版.北京:中国林业出版社, 1996:66-80
[9]	惠刚盈,克劳斯·冯佳多.森林空间结构量化分析方法[M]. 北京: 中国科学技术出版社, 2003
[10]	von Gadow K, Füldner K. Zur Methodik der Bestandesbeschreibung .Vortrag anlaesslich der Jahrestagung der A G Forsteinrichtung in Klieken b.Dessau,1992:122-138
[11]	惠刚盈,克劳斯·冯佳多,胡艳波,等.结构化森林经营 [M].北京:中国林业出版社,2007
[12]	张赟,赵亚洲,张春雨,等.北京松山油松种群结构及空间分布格局[J].应用与环境植物学报,2009,15(2):175-179
[13]	罗瑞平,亢新刚.黄龙山林区天然油松林直径结构规律[J].林业调查规划,2006,31(3):86-88
[14]	苏薇,岳永杰,余新晓.油松天然林群落结构及种群空间分布格局[J].东北林业大学学报,2009,39(3):18-21

Structure Characters of Pinus tabulaeformis Natural Forest on Xiaolong Mountain

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