摘要
以天然林内的椴木为例,综合考虑胸径和树高的变化情况,使用非线性拟合等方法,给出了一个近似预估树木材积的模型。使用该模型可对树龄在30年以上的天然林树木10年后的材积总量进行预估。如果将同一树种的胸高形数视为常数,按文中的计算,预估所产生的相对误差约为0.06。
Taking tilia in natural forest as an example, this paper considered the way of changing of the diameters and heights of trees synthetically. Using the methods of nonlinear fitting and so on, a prediction model of volumes of trees was established in the paper. The model can predict the sum of the volumes of the trees in natural forest of 10 years later. The age of each tree should be more than 30 years. According to the calculation in the paper, the relative error of the prediction was about 0. 06 suppose the form - factor of same specie of trees was a constant.
出处
《林业科技》
2009年第3期24-26,共3页
Forestry Science & Technology
基金
国家自然科学基金项目(30671667)
国家"十一五"专题项目(2006BAD0308-04)资助
关键词
材积
预估
天然林
Volame
Prediction
Natural forest
