广义岭估计在植被盖度定量评价中的应用

Generalized Ridge Estimate and its Application in the Quantitative Evaluation of the Extent of Desertification

引入了广义岭估计的方法,明显的改善了线性回归方法的缺陷,克服了变量间由于存在复共线性关系对求解待定参数所造成的不利影响,提高了估测精度.运用广义岭估计参数的迭代算法,以影响荒漠化程度的主要因子植被盖度进行研究.

In this paper, the generalized ridge estimation method ts mtroaucteu. linear regression method is remarkable improved. Muhicollinearity relationship existed between variables, for causing a bad influence to undetermine parameters calculation is overcome. The precision of the estimate is improved. Using iterative algorithm of generalized ridge estimated parameters, vegetation cover as the object to affect the extent of desertification is studied.