Use of Remote Sensing Techniques in Land Degradation Mapping

Abstract

Land degradation takes place in a number of ways, such as erosion by water and wind, acidification and salinization, and makes land unfit for humans as well as for soil environments. In most parts of the globe, land degradation has become a major issue. To mitigate this issue the need is to comprehend its causes, effects and level of seriousness. Researchers all over the world have been analysing this issue and have created evaluation and checking strategies. Many varied techniques, such as experts’ views, field estimations, subject perceptions, land users’ critiques, profitability adjustments, remote sensing detection and modelling approaches, are some of the ways to deal with land degradation evaluations at various levels. It has also been seen that in the past there has been an absence of adequate and coordinated tracking and evaluation strategies, which are recognized as a significant controlling component for resisting desertification. Remote sensing gives a superior comprehension of land degradation phenomena and the variables that drive them. A literature review of the past couple of decades shows that huge sets of research papers were published which depicts the commitment of remote sensing techniques in mapping land deterioration and degradation. This chapter presents the application of remote sensing techniques in land degradation assessment, soil mapping, soil moisture studies, soil fertility, soil resource studies and related subthemes.