Diameter variability in loblolly pine plantations

被引:1
|
作者
Zeide, B [1 ]
Zhang, YJ [1 ]
机构
[1] Univ Arkansas, Sch Forest Resources, Arkansas Agr Expt Stn, Arkansas Forest Resources Ctr, Monticello, AR 71656 USA
关键词
diameter variability; standard deviation of diameter; loblolly pine; growth predictions;
D O I
10.1016/S0378-1127(99)00139-5
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Diameter variability in loblolly pine plantations was investigated using a dataset of 2502 thinned and unthinned plot measurements covering the entire native loblolly pine (Pinus taeda L.) range. The proposed model for estimating standard deviation of diameter (STD) uses commonly available stand variables (average diameter, number of trees, age). The variability of STD among physiographic regions is explained by plot elevation. The proposed model explains 91% of the variation in STD. An independent dataset (with 10 measurements of 45 plots) was used to evaluate the model. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:139 / 143
页数:5
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