[1]石小龙,杜彦昌*,王鹏,等. 小陇山油松人工林林冠指标相关性研究[J].西北林学院学报,2018,33(3):67-73.[doi:10.3969/j.issn.1001-7461.2018.03.11]
 SHI Xiao-long,DU Yan-chang*,WANG Peng,et al. Correlation of Crown Indicators on Pinus tabuliformis Plantation in Xiaolongshan Mountain[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(3):67-73.[doi:10.3969/j.issn.1001-7461.2018.03.11]
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 小陇山油松人工林林冠指标相关性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第3期
页码:
67-73
栏目:
出版日期:
2018-05-31

文章信息/Info

Title:
 Correlation of Crown Indicators on Pinus tabuliformis Plantation in Xiaolongshan Mountain
文章编号:
1001-7461(2018)03-0067-07
作者:
 石小龙12杜彦昌12*王鹏12李录林12
 (1.甘肃省小陇山林业实验局 林业科学研究所,甘肃 天水 741022;2.甘肃省栎类次生林生态系统重点实验室,甘肃 天水 741022)
Author(s):
 SHI Xiao-long12DU Yan-chang12*WANG Peng12LI Lu-lin12
 (1.Forestry Reserch Institute of Xiaolongshan Forstry Experinent Bureau,Tianshui,Gansu 741022,China; 2.Key Laboratory of Oak Secondary Forest Ecosystem,Tianshui,Gansu 741022,China)
关键词:
 小陇山油松林冠指标相关性
Keywords:
 Xiaolongshan Mountain Pinus tabuliformis crown indicators correlation
分类号:
S791.254
DOI:
10.3969/j.issn.1001-7461.2018.03.11
文献标志码:
A
摘要:
 以甘肃小陇山油松人工林为研究对象,在探讨油松冠幅分布及其与树高、胸径之间关系的基础上,采用Pearson相关系数探讨平均冠幅(C)、冠长(CL)、树冠面积(CA)、相对冠幅(RC)、相对冠长(RCL)、相对冠面积(RCA)、树冠体积(CV)、树冠伸展度(TCEL)、冠长率(TCR)、树冠圆满度(TROR)、树冠投影比(TRPR)、生长空间指数(GSI)、树冠表面积(TCA)13个树冠指标之间的内在关联。结果表明,油松人工林冠幅平均值3.462 m,大多数林木冠幅0.6~5.4 m,整体分布近似正态分布。冠幅和树高、胸径之间均呈线性关系,且冠幅与胸径之间的线性关系更为显著。13个林冠指标之间大多数存在一定的相关性,其中,CCACVTCACAGSI等指标对呈正相关,且相关系数较大;CVTRORGSITROR等指标对则呈微弱的正相关;TCRTRORCLTRORRCLTROR呈负相关。该研究揭示了不同林冠指标之间的内在关联,同时为林冠指标高效选择提供便捷途径。
Abstract:
 Based on the characteristics of crown distribution and the relationship between crown and tree height,DBH,using Pearson correlation coefficient,the Pinus tabuliformis plantation in Xiaolongshan Mountain,was selected to explore the intrinsic association among 13 crown indicators,i.e.,the average crown (C),crown length (CL),crown area (CA),relative crown (RC),relative crown length (RCL),relative crown area (RCA),crown volume (CV),tree crown extend limit (TCEL),tree crown ratio (TCR),tree crown orbicular ratio (TROR),tree crown projection ratio (TRPR),growth space index (GSI) ,tree crown area (TCA).The results showed that the average crown width of P.tabuliformis plantation was 3.462 m,and most of the tree crowns were between 0.6-5.4 m,while the overall crown distribution was approximately normal distribution.There was a linear relationship between crown width and tree height,DBH,and the linear relationship between crown width,and DBH was more significant.Most of the 13 canopy indexes had certain extent correlations.Among them,C and CA,CV and TCA,CA and GSI and other indicator pairs had positive correlation,and the correlation coefficient were large.CV and TROR,GSI and TROR and other indicator pairs had smaller positive correlation,while TCR and TROR,CL and TROR,RCL and TROR negatively correlated.This study revealed the inherent correlation among different canopy indicators and provided a convenient way for the efficient selection of canopy indicators.

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备注/Memo

备注/Memo:
 收稿日期:2017-08-10修回日期:2017-09-26
基金项目:国家重点研发计划:人工林结构调控与稳定性维持机制及其生产力效应 ( 2016YFD0600203 )。
作者简介:石小龙 ,男 ,工程师 ,研究方向:森林培育。E-mail:747260188@qq.com
*通信作者:杜彦昌,男,工程师,研究方向:森林培育。E-mail:872931697@qq.com
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