Through testing, all the models had good estimate effects,and regression models of Rg/Rr were better than those of RVI.

• 经过统计检验,建立的模型估测效果均较好,估测值与实测值的相关性均达到显著水平,其中包含特征变量Rg/Rr的回归模型估测效果优于RVI构建的模型。