论文部分内容阅读
数量化理论是多元分析的一支,是一种通过数量化得分的办法,把复杂的多元回归关系用得分值简明地表现出来。如划分立地条件时,要考虑立地条件的主导因子(即海拔、坡向、坡度……)的综合影响。根据立地指数对各种立地因子的多元回归,采用数量化予测模型的方法,把立地指数作为因变量(Y),把立地条件的几个主导因子作为自变量(X),各因子均通过级距划分为几个等级转化成质的因子,而因变量的立地指数则用量的因子通过大量调查材料来建立多元回归方程,通过计算求解多元回归方程的参数,可算出各立地因子
Quantitative theory is a multi-analytic, is a way to quantify the score, the complexity of the multiple regression with the score concisely demonstrated. Such as the division of site conditions, we must consider the site conditions of the dominant factor (ie, elevation, aspect, slope ......) the combined effect. Based on the multiple regression of site index to various site factors, a quantitative prediction model was adopted. The site index was taken as dependent variable (Y), and several dominant factors of site conditions were taken as independent variable (X). All the factors passed The grades are divided into several grades into qualitative factors, and the dependent index is the amount of factors used by a large number of survey materials to establish multiple regression equation, calculated by solving the multiple regression equation parameters can be calculated from the site factors