conbun aletude exbernme tafe et theicpe deu canbrtnen tales ertfaces sof steutue

Abstract

Of Aleppo pine plantations, in the green barrier, which itself is a green belt developed since the early 70's in the program against desertification in the middle of the Algerian steppe, have become a new area in itself. Evaluation becomes a necessity. To this end, permanent monitoring stations are installed, by the National Institute of Forest Research, for over ten years. The tool of this assessment is the ecology of arthropods, among them many are excellent ecological indicators and have short life cycles. The study method is a sampling of arthropods in Barber traps, for one year, an analysis of soil, and vegetation surveys, three stations selected in the region of Moudjbara. The results revealed the presence of 11 079 individuals divided into 179 species including 80 species of beetles, 47 species of Arachnids, 15 species of Hymenoptera, Diptera and 27espèces 11 species of various orders. The calculation of the Shannon diversity index in the three stations, has an average of 2.577 bits. The soil is limestone 1.13%, with an organic matter content of 2.38 .Dendrograms of similarity between the stations reveals the approximation of Moudjbara stations 1 and 3 Moudjbara, and the remoteness of the Moudjbara Station 2, for orders: Coleoptera, Arachnids and Hymenoptera (Formicidae), which are mostly arthropod walkers, this result can be explained by the separation of Moudjbara stations 1 and 3 Moudjbara Moudjbara Station 2, the road is fairly busy, it would be a obstacle between stations. Comparing these results with those already found in a study in 2000, we find that species richness, abundance and organic matter content showed a sizeable increase. These results are encouraging reforestation conditions there are followed before, during and after the operations.