قلی نژاد, بهرام

[ 1 ] - اثر شدت چرا بر تراکم و تنوع بانک بذر خاک(مطالعه موردی: منطقه قوشه در استان سمنان)

At this research, the effect of the grazing intensity on the features of the soil seed bank in shrub lands in arid zones in Semnan province was studied. The sampling area (500 hectares) was determined including no-grazing area (un-grazed 15 years), the moderate grazing intensity and the high grazing intensity area near the close of interval each other. In each treatment of soil sampling, system...