Detection of terrain indices related to soil salinity and mapping salt-affected soils using remote sensing and
Hela Triki Fourati1, Moncef Bouaziz2,3, Mourad Benzina2
1Laboratory of Water-Energy-Environment, code AD-10-02, National Engineering School of Sfax, B.P.W. 3038, Sfax, Tunisia. hela.tri@gmail.com.
Abstract:
Traditional surveying methods of soil properties over landscapes are dramatically cost and time-consuming. Thus, remote sensing is a proper choice for monitoring environmental problem. This research aims to study the effect of environmental factors on soil salinity and to map the spatial distribution of this salinity over the southern east part of Tunisia by means of remote sensing and geostatistical techniques. For this purpose, we used Advanced Spaceborne Thermal Emission and Reflection Radiometer data to depict geomorphological parameters: elevation, slope, plan curvature (PLC), profile curvature (PRC), and aspect. Pearson correlation between these parameters and soil electrical conductivity (ECsoil) showed that mainly slope and elevation affect the concentration of salt in soil. Moreover, spectral analysis illustrated the high potential of short-wave infrared (SWIR) bands to identify saline soils. To map soil salinity in southern Tunisia, ordinary kriging (OK), minimum distance (MD) classification, and simple regression (SR) were used. The findings showed that ordinary kriging technique provides the most reliable performances to identify and classify saline soils over the study area with a root mean square error of 1.83 and mean error of 0.018.
More Related Videos
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
07:13Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy
Published on: February 25, 2021
Related Concept Videos
Methods of Obtaining Topography
Responses to Salt Stress
Topographic Surveying and Contours
Introduction to Surveying, Plane Surveying and Geodetic Surveys
Manipulation and Analysis
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
