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Noury Benabadji

  • Biodiversity Journal, 12 (2): 0283-0288

    Fatima Zohra Meftah, Noury Benabadji & Abdessamad Merzouk
    New data on some matorralized soils in the western Algerian region
    https://doi.org/10.31396/Biodiv.Jour.2021.12.2.283.288

    ABSTRACT
    This paper continues the work carried out to determine the influence of soil physico-chemical factors on the spatial distribution of matorrals in the plain from Remchi to Béni-Saf located in the western region of Algeria and on the relationships that soil can have on the diversity of matorrals. On the bioclimatic level, the region is characterized by semi-aridity accentuating the phenomena of thérophysation. Soil analysis was carried out using known methods (Stokes Particle Size Method, Electrometric Method for pH, 1/5 Extract Method for Electrical Conductivity, Bernard Calcium Method for Ca CO3, Anne Method for Organic Carbon). The results confirm the following characteristics: sandy-muddy “Remchi”, sandy “Rachgoun 1 and Rechgoun 2”, not far from Béni-Saf. The low clay content (Remchi: Profile 1: Horizon 1 clays 9%, Profile 2: Horizon 1: Clays 12%, Profile 3: Horizon 1: Clays 16%, Rechgoun Profile 1: Horizon 1: Clays 5%, Profile 3: Horizon 1: 5% clays and Horizon 2: 6% clays) leads to poor structural stability and degradation of the soil surface due to visible erosion especially on steep slopes.

  • Biodiversity Journal, 11 (2): 383-388

    Mustapha Ainad Tabet, Noury Benabadji, Abdessamad Merzouk & Halima Benmoussat
    Contributions to the research of ecological gradients in the treatment of floristic data (Oran, Algeria)
    https://doi.org/10.31396/Biodiv.Jour.2020.11.2.383.388

    ABSTRACT
    The factorial analysis of the correspondence from the “Minitab” software carried out on the floristic inventoried species at four different stations in Oran region (Algeria) made it possible to highlight interesting information on the numerous ecologic variations which evolve over time in a certain environment. This biostatistical treatment has also revealed a certain number of gradients (environmental disturbances) underlying the different axes of the factorial planes of the stations. These factors are mainly related to anthropogenic actions (crops, nitrates, etc.) which often lead to frequent therophytisation. To these are added other natural factors such as salinity and steppisation.