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Table 1 Classification of soil salinity based on electrical conductivity values (http://vro.agriculture.vic.gov.au/dpi/vro/vrosite.nsf/pages/water_spotting_soil_salting_class_ranges#)

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

EC1 : 5 (dS/m)Soil salinity classes
< 2No salinity
2–4Low salinity
4–8Medium salinity
8–16High salinity
> 16Very high salinity