杂种落叶松树高-胸径模型的研究

Study of Height-diameter Model for Hybrid Larch

树高是林分生长和收获模型中的重要树木因子之一,其获取方式一直是林业基础研究之一。研究基于黑龙江省江山娇林场实测48块杂种落叶松标准样地树高-胸径数据,建立该树种的树高曲线模型并利用独立样本检验模型的预测能力。结果表明最终树高-胸径(H-D)模型形式为:H=1.3+(D/0.9001+0.2192*D)^2,模型拟合和检验指标均表明该模型可以用于利用胸径这个易测因子对树高进行预估。

Tree height is one of the most important tree attributes in forest growth and yield models,and its acquisition method has always been the basis of forestry research.The height-diameter model for hybrid larch was developed using the data from 48 sampled plots in plantation located in Jiangshanjiao Forest Farm of Heilongjiang Province in this study.The prediction ability of model was also tested with independent samples.The results showed that the final form of height-diameter(H-D)model was:.The performance of model fitting and validation indicated that the model could be used to predict tree height using diameter at breast height which was easy to measure.