Application of Electromagnetic Technique to Identify Recharge and Discharge Areas for Reforestation in Northeastern Thailand

Abstract

Areas affected by salinization in northeastern Thailand were studied using data obtained from ground geophysics methods, multi frequency electromagnetic induction terrain conductivity meter, and hydrological data from the routine piezometer method. The electromagnetic technique is not only a useful tool for identifying the spatial distribution of salt content in landscapes, but it may also be applicable for delineating local recharge and discharge areas by comparing results with hydrological data. It could also aid in reforestation planning in large-scale areas for rehabilitation of salt-affected soils.