Evaluation of Dry planting effectiveness on some physical characteristics of Sand Dunes in Baiji Iraq

Abstract

Studies show that fixing sand dunes by the dry planting has an effect upon the physical characteristics of the dunes soil Aggregate stability by using three parameters which is the prestige rate of Dry aggregates which have diameter More than 0.84 mm , mean might diameter and the mean of demolition , bulk density was Management by using the core method . Planting tamarisk trees increases the amount of the organic material as well as the natural vegetation. These trees also work as bumpers reduces the wind speed and thus reduce the wind erosion. Additionally, the results show a reduction in the bulk density as well as the percentage of sand for the dry aggregates, the results show the process of fixing made aggregates with diameters larger than 0.84mm, and it increased the average of the mean weight diameter (MWD) and it reduced the rate of demolition, so we can conclude that the fixing method stricture the soil .