Soil and Groundwater Salinization Problems in the Khorat Plateau, NE Thailand: Integrated Study of Remote Sensing, Geophysical and Field Data

Abstract

Title Page 1\. Introduction 1.1 Problems of Soil and Groundwater Salinization in the Khorat Plateau 1.2 Objectives of the Study 1.3 The Study Area 1.4 Previous Work 1.5 Data and Equipment 1.6 Methods of Investigation 2\. Geology 2.1 General Geology 2.2 Regional Plate Tectonic Development 2.3 Structural Framework 2.4 Lithostratigraphy and Sedimentology 2.5 Rock Salts in the Khorat Plateau 2.6 Subsurface Geology 3\. Soil and Groundwater Salinization in the Khorat Plateau 3.1 Soil and Groundwater Salinity 3.2 Hydrogeology 3.3 Causes of Soil and Groundwater Salinization in the Khorat Plateau 3.4 Salinity Classification 4\. Remote Sensing and GIS Investigation 4.1 General Background 4.2 Remote Sensing Data Used 4.3 Image Processing 4.4 Lineament Analysis 4.5 Drainage Pattern Analysis 4.6 Saline Soil Mapping 5\. Geophysical Investigation 5.1 Geophysical Investigation and Rock Salt 5.2 Electric Resistivity Investigation 5.3 Seismic Investigation 5.4 Microgravity Investigation 6\. Results of the Study and Recommendations 6.1 Distribution of Rock Salt and Soil Salinity in the Study Area 6.2 Salinization Features and Remote Sensing 6.3 Conceptual Model of Soil and Groundwater Salinization in the Khorat Plateau 6.4 Salinity Classification of the Study Area 6.5 Recommendations References Appendices Enclosure 1. False Color Composite Image Landsat7 ETM+ (27.12.1999), Western Khorat Plateau, NE Thailand Enclosure 2. Classification of Salt-affected Areas on the western Khorat Plateau