Browsing by Author "Assmaa ALAOUI"

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    Prediction by maximum entropy of potential habitat of the cork oak (Quercus suber L.) in Maamora Forest, Morocco
    (2021-01-01) Abdelkader BENABOU; Adnane LABBACI; Said LAARIBYA; Mohamed BIJOU; Assmaa ALAOUI; Halim OUHADDOU; Sezgin AYAN
    In this paper, the maximum entropy (MaxEnt) algorithm was applied to estimate the current and potential distributions of cork oak (Quercus suber L.) in the Maarmora forest of Morocco to provide a basis for its conservation under climate change conditions in the Mediterranean basin. A total of 1,428 field-based spatial records of cork oak locations were used (altitude and 19 bioclimatic environmental variables) to model the potential distribution of the cork oak. The adjusted model had a good predictive quality (area under the curve=0.81). Precipitation during the wettest quarter of the year, seasonality in precipitation, altitude, and seasonal variations in temperature were the key factors determining the distribution of the cork oak in the Maamora forest. Most areas with currently suitable conditions for cork oak were located in the western and central Maamora forest regions, which enjoy a humid bioclimate and receive significant sea spray from the Atlantic Ocean. Moving away from the ocean, the humidity decreases, and the temperature increases, such that the cork oak faces difficulties in adapting and regenerating. The results can be used to identify the high-priority areas for cork oak restoration and conservation of this species against the expected impact of climate change.
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    Spatial Analysis of the Degraded Forest Areas in Idmine ForestMorocco Using Geoscience Capabilities
    (2021-03-01) Abdelkader BENABOU; Sezgin AYAN; Said LAARIBYA; Assmaa ALAOUI
    AbstractAim of study: The aim of the study is to present a diagnosis for the state of Argan forest degradation inMorocco through GIS and remote sensing utilizing Sentinel 2 satellite images of the year 2019 (dated28/08/2019).Area of study: The study was carried out in a forest commune in Idmine, South West Morocco, whichis located in semi-arid bioclimatic region.Material and methods: In the study, two methods were tested. These are; (i) the vegetation indices (VIs)[Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), SoilAdjusted Vegetation Index (SAVI), Brilliance Index (IB)] and their combination and (ii) the supervisedclassification and spectral analysis.Main results: Two methods have given the same results (Kappa coefficient=90%) to describe the stateof forest degradation. Consequently, three classes pertaining to forest degradation within the study areawere; low (34%), medium (44%) and critical degradation (22%).Highlights: This monitoring might help managers to create forest management plans and to evaluate thespeed of deforestation and degradation.
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    The Evolution of The Forest Cover with The Effect of Anthropic Pressure (The Case Study of Sehoul Cork-Oak Forest in Morocco, North Atlantic)
    (2020-12-01) Assmaa ALAOUI; Said LAARIBYA; Sezgin AYAN
    Aim of study: The objectives of this study consist in an examination of the evolution of cork-oak forestin Sehoul forest, Morocco, over two decades and to analyze the impact of the anthropic pressure.Area of study: The research has been carried on Sehoul forest, located in northwestern Morocco. It islinked to the largest plain cork-oak forest in the world.Material and method: This work carried via mapping of forest area, socio-economic surveys andparticipatory workshops, to assess the state of degradation of forest areas and their evolution, and tosearch for the causes of these with a relationship with human activities.Main results: Sehoul cork-oak forest is among the forest ecosystems that play a fundamentaleconomic, social and environmental role. However, the current state of its stands is disturbing. Theprogressive degradation is the result of a combination of climatic and anthropogenic factors that continueto intensify. The degradation of the forest can be expressed by its replacement by introduced species andthe reduction of its coverage rate, and the absence of its natural regeneration.Highlights: The cork-oak forest in Sehoul, firewood-borne forest regression is twice as high as forestproduction and overgrazing rate is around 80%.