Biological recovery the steppe of Hammada scoparia after enclosure in the region of Naama (Algeria)

Abstract

Abstract This work was being carried out in the steppe of remth (Hammada scoparia) in Oranian part of the Saharan Atlas (Tiout - south of Naama). The H. scoparia of Saharan group occupies the foothills south of the Saharan Atlas and glazes and hamadas of the northern part of the Sahara where it seems to find its optimum development. The objective of the study is the floristic and ecological characterisation of the steppe vegetation groups of H. scoparia after 4 years of enclosure grazing (Eg). For the past three decades, steppe of H. scoparia were completely overwhelmed, both in their structure and their operation by increasing the herd and the continued use of natural pastures using animal load significantly higher than the production potential of course, which is reflected by the reduction of their capacity for natural regeneration. Intervention measures that address this alarming situation are to foster the inverse process of degradation reconstruction and rehabilitation of degraded steppe rangelands by the technique of the Eg. The methodology involves a device that is composed of a series of transects that constitute a grid and allow to scan the whole website for Eg and part of the neighbouring paths. The results emphasise the interest and constructive impact of the Eg on plant diversity and the fight against the factors of degradation and desertification. This review highlights the importance of the technique of Eg for the rehabilitation and restoration of steppe rangelands in arid bioclimate.