土壤水分特征曲线几种标定的对比分析

Analyses by Contrasting Calibration Methods of Soil Water Characteristic Curve

土壤水分特征曲线的标定是土壤水的能量和数量关系在不同尺度间转换的方法,也是植被生态需水机理研究的重要组成部分。通过对传统的迭代法、一次法和建立的2种混合遗传算法进行比较,标定的结果表明,多项式遗传算法能综合考虑2种方差的影响,并能给出一致性的标定结果,这种经验式混合遗传算法对传统的标定算法进行了改进。

Calibration of soil water characteristic curve, as an exchanging method on the relationship of soil water energy and quantity among different scale, is an important research part in mechanism of vegetation ecological water demand also. Through the contrasting traditional iteration method,once method, and the two hybrid genetic algorithms established in this paper, it showed that multinomial genetic algorithm can give coherent calibration results under considering effects from two kinds of variance. The experiential hybrid genetic algorithm is a good improvement to traditional calibration method.