Effect of Aridity Gradient on Physico-chemical and Microbial Characteristics of Pine Forest Soils

The objective of this study was to see the effect of the bioclimatic stage on certain characteristics of the soils of the forests of western Algeria. For realized this work have selected three forest areas populated at 90% by Aleppo Pine and located in the bioclimatic stages humid, semi arid and arid. For each station, some physical, chemical and microbiological analyses were carried out that could have an impact on the vegetation and the biological processes of the soil.

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