摘要
本文应用分解拟合复合模型方法,建立了1/10树高处直径的预估模型d_(0.1)=f_1(h)+f_2(h)d_(1.3)。同时根据树干上10个相对高处的平均相对形率和 d_(0.1)的预估模型,建立了陕西省油松和巴山松的材积方程。这些材积方程的相对系统误差均<±2%,达到了使用精度的要求。
The model d_(0.1)=f_1(h)+f_2(h)d_(1.3) was developed by the method of resolution fit for predicting diameter of 1/10 height of tree.And volume equations for pinus tabulaeformis and P.henryi on Shaanxi province were established on the bases of 10 average relative form-quotientsand the model for predicting d_(0.1).The relative systematic errors of these equations are all<±2%.The precision is up to applicable requirments.
出处
《陕西林业科技》
北大核心
1989年第2期27-33,共7页
Shaanxi Forest Science and Technology
