回归分析确定土地质量评价因素权重的探讨

以土种为基本单元统计资料,采用多元回归分析法定量确定土地评价因素的权重,是一种新的尝试。该方法比传统的经验更具有科学性。同时,由于各地在土壤普查中积累了丰富的土种资料,此种方法也容易为基层掌握。以土种为基本单元统计资料,可以把因变量和自变量由于统计数据的误差缩小在土种范围,因而可以提高因变量和自变量的相关总体效果,从而提高评价的精度。确定好土种基本产量是该方法的关键。

STUDY ON DETERMINING THE WEIGHTED COEFFICIENTS OF EVALUATION FACTORS IN LAND EVALUATION WITH THE METHOD OF MULTIPLE LINEAR REGRESSION ANALYSIS

The weighted coefficients of land evaluation factors refer to those values which can be used to weigh the importance of each evaluation factor in land evaluation. In the past work of land evaluation, the weighted coefficients of evaluation factors were mostly determined by the experinces of specialists. It might be short of enough scientific basis. If we use the method of regression analysis to determin the weighted coefficients of land evaluation factors by means of the computer, the precision of evaluation result and efficiency in land evaluation will be increased obviously. Many specialists and farmers think that this method is a scientific and practical one.