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.
The results showed that there is a great
heterogeneity between the different stations and that the water and nitrogen
content depends on the aridity gradient. On the other hand the amount of carbon
is more important in the humid and arid zone and lower between the two
stations. Regarding microbial biomass have noted that it does not depend on the
aridity gradient. The enzymatic activities studied are more pronounced in the
humid zone and almost the same in the semi arid and arid.
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