兴安落叶松树高曲线模型研究

应用孟家岗林场2011—2012年17块固定样地中85株解析木资料,根据经验方程选择单木树高曲线的基本模型,应用选定的模型对不同立地条件下的落叶松人工林进行树高曲线拟合,再用参数化的方法确定参数与各个林分调查因子之间的关系,从而建立单木树高曲线模型。结果表明:Richards理论模型可作为落叶松人工林单木树高曲线基本模型,其参数与林分的地位级指数(SCI)呈线性关系,而与年龄和密度的关系不明显;最终建立的树高曲线方程为H=(12.380 25+0.740 79 SCI)(1-e~(-0.05D))0.665 29+1.3,其优点是,当0≤H≤1.3时,D的取值可以为零,符合林木生长的生物学特性。

Height Curve Model of Larix gmelinii

Applying data obtained from 85 base model of individual tree which was selected by empirical equation in 17 permanent sample from 2011 to 2012, Larix gmelini plantation under different site conditions were conducted height curve fitting applied by selected model;the relationship among parameters & survey factors of each stand was determined by parametric method, and finally the single curve was established.Result shows that the Richards model can be used as the basic model of the single curve of Larix gmelinii plantation, and its parameters are linearly related to the positional index (SCI) of stand.The relationship between age and density is not obvious.The high curvilinear equation is:H=(12.380 25+0.740 79 SCI)(1-e-0.05 D)0.665 29+1.3;the advantage of this model is that when 0≤H≤1.3, the value of D can be zero, which is consistent with the biological characteristics of tree growth.