海南省桉树生长率模型研建

Establishment of Growth Rate Models for Eucalyptus robusta in Hainan

利用海南省1998年、2003年和2008年森林资源连续清查中,复查的3 642株桉树保留木、135个桉树实测样地资料,研究建立了桉树胸径生长率、材积生长率和林分材积生长率模型。所建模型拟合效果良好,无明显系统偏差,建立的桉树胸径生长率模型预估精度达96%以上,一元、二元林分材积生长率模型预估精度均在99%以上,可为以后海南省开展各类森林资源调查估算桉树生长量提供参考依据。

Taking data of 3 642 Eucalyptus robusta standing timbers, 135 Eucalyptus robusta field testing spots of 1998, 2003 and 2008 continuous forest inventories in Hainan Province as studying cases, we established diameter growth rate, volume of timber growth rate for single tree and volume of timber growth rate for forest models of Eucalyptus robusta. These models were with good fitting effect, no systematical errors, the evaluation accuracy of diameter growth rate model were high than 96%, unary and binary volume of timber growth rate for forest were both higher than 99% , which will provide refences for all kinds of forest resource evaluations of Eucalyptus robusta forest in Hainan Province.