韶关市桉树短周期工业原料林树高曲线模拟研制

Models for Tree Height Curves of Short-rotation Industrial Timber Eucalyptus Plantation in Shaoguan

树高曲线在森林经营和收获调整中有着重要的作用。在韶关市曲江区、曲仁区和浈武区的20个乡镇各种立地条件和不同年龄的桉树(尾巨桉、巨尾桉)林分中,调查了标准地93块,对14个非线性树高曲线模型进行了拟合和检验。结果表明:Kozak函数式H=e^(4.6461-6.5228D^(-0. 5)+0.0008D^(-1)+0.00001D^(-2))是模拟桉树短周期工业原料林树高曲线的理想模型。并对其精度进行了检验,建立的桉树短周期工业原料林树高预测方程将对韶关市林业生产经营有较好的指导和参考意义。

The height-diameter curve played an important role in the forest management and forest yield regulation.93 sample plots were surveyed in short-rotation industrial timber Eucalyptus plantation which were distributed in the districts such as Qujiang,Quren and Zhenwu of Shaoguan.The plantations were of different ages and grew in different site conditions from 20 villages and towns.14 nonlinear tree height-diameter curve models were fitted and tested.And Kozak function: H = e^(4.6461-6.5228D^(-0.5)+0.0008D^(-1)+0.00001D^(-2)),which was proved to be the ideal model of the height-diameter curve for simulation trees.The forecast equations would have reference value to forestry productions and managements in the Shaoguan.