Remote Sensing of Grassland Biophysical Parameters in the Context of the Sentinel-2 Satellite Mission

Table 5

Summary of the multiple regression models: partial adjusted coefficient of determination (partial ), variance inflation factor (VIF), significance levels of the predictor variables (), number of observations (), cumulative , cross-validated cumulative (), root mean square error (RMSE), cross-validated RMSE (RMSE), normalized RMSE (NRMSE), and cross-validated NRMSE (NRMSE). refers to reflectance at a given spectral band (e.g., , Sentinel-2 simulated reflectance centered at 705 nm).

Model	MR models statistical summary
	CCC											GFAPAR
	Explanatory variables	Partial; (—)	VIF; (—)	(—)	(—)	Cumulative; (—)	Cumulative; (—)	RMSE; (mg m^−2)	RMSE; (mg m^−2)	NRMSE; (—)	NRMSE; (—)	Explanatory variables	Partial; (—)	VIF; (—)	(—)	(—)	Cumulative; (—)	Cumulative; (—)	RMSE; (—)	RMSE; (—)	NRMSE; (—)	NRMSE; (—)
2		0.77; 0.14	1.25; 1.25		32	0.92	0.90	135.07	147.95	0.08	0.09		0.69; 0.06; 0.04	3.58; 3.13; 5.64		94	0.79	0.78	0.09	0.09	0.11	0.12