06. Study on soil salinity by using Sentinel-2 imagery data: a case study in Dong Nai Province, Vietnam

Abstract

Soil salinity is one of the causes affecting agriculture in many countries and territories around the world. This study aims to develop the saline soil map of ​​Long Thanh and Nhon Trach districts, Dong Nai province, using Sentinel-2 data taken in the dry season 2020 - 2021. Salinity Index (SI) and Enhanced Vegetation Index (EVI) were used in this study. The actual measurement data and satellite data were collected at the same time in order to build a suitable model of index correlation at the study area. On the basis of correlation calculations by a multivariable linear regression model with a correlation coefficient of approximately 0.75. The data set collected in March 2021 was used to build a saline soil map in the study area due to salinity soils were clearly detected at this time.