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Table 3 Regression models for estimating EC from remote sensing data

From: Soil salinity assessment by using near-infrared channel and Vegetation Soil Salinity Index derived from Landsat 8 OLI data: a case study in the Tra Vinh Province, Mekong Delta, Vietnam

No.Regression formulaR2P valueStandard error of EC (dS/m)
1EC1:5 = 28.013 × e−13.39 × NIR0.802.71E−081.29
2EC1:5 = 26.068 × e−14.73 × SI40.480.007612.44
3EC1:5 = 2.485 × e3.2449 × NDSI0.460.000191.88
4EC1:5 = 5.671 × e−4.984 × NDVI0.410.000342.15
5EC1:5 = 7.406 × e−9.16 × SAVI0.623.78E−071.69
6EC1:5 = 72.86 × e2.8802 × VSSI0.711.39E−051.76