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In the present work, we were able to verify the utility of splitting the organic matter that seems to be indispensable, especially when it comes to the soil humus which is very little polymerized and containing a large proportion of non-decomposed organic matter. This study even if it remains unfinished, it provides some useful information. Moreover, this work reflects the fundamental influence exerted by the organic matter as a soil and as a driving force of its dynamics. Humus factor in the vocation of a soil can promote or remove some plant species. The statistic analysis shows that the humification of the organic matter is faster on calcareous sandstone substrate (Calabrien) as on Tithonique Substrate with advanced cretaceous which can be explained by the very high rate of humic acids as the calcareous sandstone substrate. At the level of plant development, the organic matter provided by the mixed stands (Eucalyptus, Pinus halepensis, Juniperus phoenicea) with an undergrowth which is formed by (Retama monosperma,calycotome spinosa,Pistachia lentiscus, Phylaria latifolia, Lavandula stoecka) has a very god humification with a predominance of humic acids that indicate the acceleration of the development of clay-humic complexes and a permanent wealth of energy reserves.

open journal of ecology

Characterization of the Organic Matter in the Formations with Juniperus phoenicea, and Pinus halepensis in the Matorrals of the Mostagan&amp;#233;mois Littoral