GWR模型在土壤重金属高光谱预测中的应用

GWR模型在土壤重金属高光谱预测中的应用

江振蓝, 杨玉盛, 沙晋明

Application of GWR model in hyperspectral prediction of soil heavy metals

Zhenlan JIANG, Yusheng YANG, Jinming SHA

表4 福州市土壤重金属OLS及GWR预测模型的精度检验

Tab. 4 Prediction accuracy of OLS and GWR regression models in Fuzhou City

重金属	建模样本							验证样本
	AIC			调节R²		残差平方和		调节R²		均方根误差
	OLS		GWR	OLS	GWR	OLS	GWR	OLS	GWR	OLS	GWR
Cd	75.807	78.544	0.181	0.196	10.986	10.330		0.167	0.192	0.302	0.294
Cu	730.248	698.162	0.323	0.649	13758.666	4141.423		0.217	0.613	11.658	8.192
Pb	1204.227	1199.618	0.141	0.216	64334.784	55866.254		0.083	0.213	24.700	22.884
Cr	742.016	720.703	0.266	0.716	21484.197	5441.275		0.090	0.396	15.487	12.463
Zn	925.785	916.964	0.281	0.525	194869.446	92018.520		0.247	0.456	39.781	31.934
Ni	602.693	605.455	0.212	0.219	5406.102	5179.912		0.094	0.117	7.392	7.292