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Assessment of the impact of climate change on soil moisture using remote sensing and Geographic Information Systems (GIS)

M. Meghraoui, M. Regagba

Abstract



Studying the relationship between the Soil Moisture Index (SMI) and climate change is crucial, as it provides insights into the impacts of changing climatic conditions on soil moisture dynamics and hydrological processes . Our main objective in this study is to evaluate soil moisture variations in the El Mefrouche watershed in northwestern Algeria, based on changes in climatic parameters such as precipitation and temperature over a period of five years. To achieve this objective, we will use Landsat 8 satellite.images for each year of the study period. The study uses a Soil Moisture Index (SMI) to analyze satellite images taken on five different dates. The results show that on 02/01/2019, the soil moisture was very high (SMI from 0.8 to 1) covering an area of 309.67 hectares, whereas on 12/30/2017, the soil moisture was very low (SMI from 0.8 to 1) covering only an area of 65.46 hectares. The driest SMI values (0 to 0.2) were recorded on 12/30/2017, covering the largest area of 1809.37 hectares, indicating that the soil was very dry in a large part of the watershed. What is really confirmed after analyzing the climatic data for the cited period

Keywords


SMI, Remote sensing, Landsat8, climate, El Mefrouche.

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