Surface Soil Moisture Estimation Using a Neural Network Model in Bare Land and Vegetated Areas

Table 2

Accuracy evaluation of soil volumetric moisture retrieval results.

Evaluating indices	Scheme 1	Scheme 2	Scheme 3	Scheme 4	Scheme 5	Scheme 6	Scheme 7	Scheme 8	Scheme 9	Scheme 10	Scheme 11	Scheme 12
R	0.8682	0.8163	0.7815	0.6477	0.7093	0.7382	0.9001	0.8519	0.8049	0.7008	0.7588	0.7669
RMSE (cm^3/cm^3)	0.0593	0.0579	0.0577	0.0674	0.0648	0.0631	0.0414	0.0547	0.0579	0.0635	0.0575	0.0588
ubRMSE (cm^3/cm^3)	0.0544	0.0577	0.0575	0.0774	0.0646	0.0617	0.0414	0.0537	0.0574	0.0634	0.0569	0.0582
Bias (cm^3/cm^3)	−0.0035	−0.0034	−0.0033	−0.0045	−0.0042	−0.0039	−0.0017	−0.0030	−0.0033	−0.0041	−0.0033	−0.0034