An Eco-Dendrometric Study of Atlas Cedar (Cedrus Altantica Manetti) from Theniet-El-Had National Park (North West of Algeria)

Abstract

Purpose: This work contributes to the study of the growth pattern of Atlas Cedar (characterized by dendrometric variables) relevant to the stands from Pepinière canton in relation to site factors (ecological and pedology descriptors). Theoretical framework: A forest ecosystem is a complex set of external factors that have a positive or negative effect on tree growth. Species ecology is a key point in understanding their behavior in relation to environmental fluctuations. Method: Forty-six temporary plots were set up to collect ecological, pedological, and dendrometric data, allowing for a characterization of the growth pattern of Atlas Cedar stands. Results and conclusion: The study highlights the presence of an unmanaged irregular forest. Despite being located in an environment conducive to its growth, this forest is subject to degrading anthropogenic activity. Analysis of variance at a significance level of 95% shows that altitude and limestone content are the main site factors influencing Atlas Cedar growth. Research implications: knowledge of the growth rate of this species allows better silvicultural operations, and application of more adequate management plans for this endemic protected species. Originality/value: This study constitutes a reliable scientific tool for forest managers, particularly in national reforestation plans, which are doomed to failure due to a lack of knowledge of the behavior of the species used.