Influence of the temperature on soil's exchangeable cations and cation exchange capacity, Derna district, Libya: A field and Laboratory study

This study conducted in Aljabal alakhdar (Green Mountain), Derna, Libya. It is the only wet region Like other Mediterranean forests, it exposed to risk of fires. To assist this, two different geographical units from (coastal and mountain), which been burned at times; identify whether these soils are regaining their pre-burn status over time. The studied properties were: soil clay content, organic matter (O M), exchangeable cations cation exchange capacity (CEC). obvious results that there a relatively low compared contents silt sand, both sites unburned areas. Soils characterized by content. indicated that, basic ranking was: Ca++ > Mg++ Na+ K+, sites, for areas all depths. rank order four did not change with depth except sometimes-exchangeable potassium was more abundant than sodium. calcium magnesium account about 80% CEC so, patterns behaviour similar elements.