江西大岗山地区杉木树高曲线模型的研究

Tree Height-diameter Models of Chinese Fir Plantations in Dagangshan,Jiangxi Province

树高曲线是描述林分结构的一条重要曲线。江西大岗山地区是杉木分布的中心产区。研究构建该地区的树高曲线有利于提高该地区的林分蓄积量估计精度。本研究以该地区15年生杉木人工林为研究对象，利用6个常用的树高曲线模型，分析树高与胸径的关系。研究结果发现Weibull模型模拟该地区的杉木树高曲线精度最高，可为估计该地区的杉木树高服务。

Height-diameter curve is a critical relationship for describing forest structures in a stand. Dagangshan, Jiangxi province, is a major area planting Chinese fir. Modeling the height-diameter plays an important role on improving the stand volume prediction. In this study, based on the Chinese fir stand at 15-year, we develop the height-diameter models through using widely used six equations. Results showed that Weibull model performed best among these 6 models, which indicated that the Weibull model could be used for predicting tree height of Chinese fir in this area.