Fig. 11From: 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, VietnamSoil salinity map with depth from 0 to 20 cm, using model VSSI index in Tra Vinh Province (equation 6 in Table 3)Back to article page