海南东北部木麻黄人工林树高曲线研建

Establishment of the Tree Height Curve for Casuarina equisetifolia Plantations in northeastern Hainan

以海南东北部地区系统抽样样地获取的木麻黄人工林内216株林木为样本,选用6种常用的精度较高的树高曲线方程进行模拟木麻黄的树高曲线,通过决定系数、平均相对误差、均方根误差、预估精度4个统计量以及残差图检验,得到海南省木麻黄人工林树高曲线为H=1.3+30.217×e-8.790/D。研究为通过胸径迅速准确获得木麻黄的树高提供了可靠依据,为木麻黄人工林的生长收获以及科学经营提供参考。

Six commonly used tree height curve equations with high accuracy were employed to simulate the tree height curve of Casuarina equisetifolia from 216 tree samples collected in the C. equisetifolia plantations by systematic sam pling in northeastern Hainan. A tree height curve equation H =1.3 ＋30.217 ×e-8.790/Dfor C. equisetifoli a plantations was derived from determination coefficient, averagerelative error, root mean square error, prediction accuracy and residual plot test. This study provides a reliable basis for the rapid and accurate calculation of the tree height with the DBH, and references for the growth, harvest and scientific operation of C. equisetifolia plantations.