云杉二元材积与蓄积量精度分析模型研究  

Research on Models for Accuracy Analysis of Dual Volume and Stock Volume of the Spruce

作　　者：何诚[1] 冯仲科[1] 刘柯珍[2] 袁进军[1] 

机构地区：[1]北京林业大学测绘与3S技术研究中心,北京100083 [2]中国林业科学研究院木材工业研究所,北京100091

出　　处：《林业调查规划》2010年第4期1-6,共6页Forest Inventory and Planning

基　　金：国家863目标导向精密光电角距测量定位关键技术及低成本智能化仪器研制(2009AA12Z327)

摘　　要：针对如何提高云杉二元材积回归模型参数的回归精度,进而提高其蓄积量的估算精度的问题,采用非线性最小二乘法和附加限制条件的非线性最小二乘法建立了云杉材积模型,并对建模中估计出的模型参数进行精度评定;在斯泊尔模型蓄积量精度估算的基础上,运用每木法计算出云杉蓄积量的精度评定模型,然后利用已建模型估算出的云杉蓄积量进行精度评定,不仅知道所求参数或立木蓄积量的具体数值,还可知道其具体误差范围;通过计算机VB语言编制了建立模型和精度分析程序,实现建模和精度评定的自动化,提高处理大批量木材、蓄积数据的效率和准确性.In this paper,focus on the issues concerning how to improve the regression accuracy of the spruce＇s dual volume regression model parameters and to increase estimation precision of the stock volume,the authors adopted both non-linear least squares method and additional restrictions on the conditions of a non-linear least squares method to establish a model for spruce volume,and evaluated the accuracy of model parameters estimated in the modeling.On the basis of the volume accuracy estimation of Slovakia＇s Weibull model,we calculated the accuracy assessment model of the spruce volume by using individual tree method,and then assessed the accuracy of the stock volume estimated in the established model.In such a way,we get to know not only specific numerical value of the parameters or standing volume,but also the specific error range.The VB computer language helped to program the model establishment and precision analysis to achieve automation of modeling and the accuracy assessment,and finally to increase the efficiency and accuracy of disposing a great deal of volume data.

关 键 词：二元材积 蓄积量 精度分析 最小二乘法 回归模型 云杉 

分 类 号：S791.18[农业科学—林木遗传育种] S758[农业科学—林学]