Research Article
Estimating Salt Concentrations Based on Optimized Spectral Indices in Soils with Regional Heterogeneity
Figure 5
Scatter plots of predicted vs. measured SSC. (a) NDSI-Ebinur Lake Basin. (b) RSI-Ebinur Lake Basin. (c) Combination-Ebinur Lake Basin. (d) NDSI-Ugan-Kuqa Oasis. (e) RSI-Ugan-Kuqa Oasis. (f) Combination-Ugan-Kuqa Oasis. (g) NDSI-Keriya Oasis. (h) RSI-Keriya Oasis. (i) Combination-Keriya Oasis. (j) Global model.
(a) |
(b) |
(c) |
(d) |
(e) |
(f) |
(g) |
(h) |
(i) |
(j) |