森林蓄积定量估测的岭估计参数  

The Ridge Parameter for Forest Stock Volume Quantitative Estimation

作　　者：李崇贵[1] 蔡体久[2] 赵宪文[3] 

机构地区：[1]深圳职业技术学院,深圳518055 [2]东北林业大学 [3]北京林业大学

出　　处：《东北林业大学学报》2005年第5期21-23,26,共4页Journal of Northeast Forestry University

基　　金：国家自然科学基金资助项目(30371159)。

摘　　要：为克服影响森林蓄积估测的遥感和GIS因子间可能存在多重相关性的影响,采用岭估计建立森林蓄积估测方程。主要研究内容包括采用岭估计的条件、各种岭参数计算方法的比较、最优岭参数计算方法的选择及软件实现。通过实例计算,比较了当在影响蓄积估测的遥感和GIS因子间存在多重相关性时,岭参数的选择及岭估计和最小二乘估计的优劣。To overcome the possible influence of multi - correlation between the factors of remote sensing and GIS influencing forest stock volume estimation, forest stock volume estimation equations were established with ridge estimation. The main research contents included the condition of applying ridge estimation, the comparison of all sorts of methods for calculating the ridge parameter, the selection of the optimum method on calculating the ridge parameter, and the realization of software. The selection of different methods on calculating the ridge parameter, the relative merits of ridge estimation and the least square estimation were expounded through some practical examples when multi - relativity existed between the factors of remote sensing and GIS.

关 键 词：岭估计 岭参数 多重相关性 方差扩大因子 

分 类 号：S785.51[农业科学—林学]