Browsing by Author "Amel NEGHNAGH"

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    Dynamics and biophysical characteristics of forest and pre-forest formations in Hodna
    (University of M'Sila, 2024) Amel NEGHNAGH
    This study aims to investigate the dynamics and biophysical characteristics of forest and preforest formations in Hodna Mountains, specifically Boutaleb and Djebel Messaad forests. The methodology involves measuring the biophysical variables (height and diameters) of trees during the years 2022 and 2023, as well as evaluating the photosynthetic activity using remote sensing techniques of this vegetation formation. The Normalized Difference Vegetation Index (NDVI), the Normalized Difference Moisture Index (NDMI) and Evapotranspiration between the period 2014 and 2024 were calculated. The results of the structure is therefore regressive for Boutaleb forest, characteristic of natural stands with high regeneration potential, small diameter and high heights individuals. The structure in Djebel Messaad forest stands is characterized with a predominance of older and high heights individuals. The results of Vegetation Indices, over the years, shows that the diachronic study of vegetation productivity (NDVI), vegetation humidity (NDMI) and Evapotranspiration varies from one site to another, with maximum values in Boutaleb forest formations. This is due to changes in the physiological processes of plants over time.