Tarbiat Modares University (TMU) ECOPERSIA 2322-2700 5 1 2017 03 01 Some Ecological Conditions of Amygdalus scoparia Spach in Nehbandan, Eastern Iran 1655 1667 17193 EN Abdolreza Javidfar Former M.Sc. Student of Range Management, University of Zabol, Zabol, Iran Einollah Rouhi-Moghaddam Associate Professor, Department of Range and Watershed, University of Zabol, Zabol, Iran Mahdieh Ebrahimi Associate Professor, Department of Range and Watershed, University of Zabol, Zabol, Iran Journal Article The effect of soil and topographic features on distribution of <em>Amygdalus scoparia</em> in Nehbandan (Iran) was investigated. Slope, aspect and altitudinal maps were overlaid to prepare a working map unit. Quantitative and qualitative traits, including height, number, collar diameter of sprout with the highest diameter, crown diameter and trunk health were recorded in 1000 m² plots (27 plots). In each plot, soil was sampled at depth 0-30 cm. The regression model of the traits with topographical and edaphic factors showed that 70% of variations of <em>A.scoparia </em>sprout height was explained with calcium carbonate, 50% variations of the number of sprouts was explained with clay, and 77% variations of the crown diameter was explained with calcium carbonate. Correlation results revealed that some soil properties such as clay, potassium, organic matter, sand, acidity and lime accounted for <em>A.scoparia</em> distribution. Future work on other indicating factors will help us to determine the optimum range of these factors for this plant species. https://ecopersia.modares.ac.ir/article_17193_8a618b8f8f01a09230853dbe6f581c27.pdf