The Response of Diameter and Height of Pine Eldarica Medw to Some Environmental Variation Factors in Chitgar Park

This study was warried out to investigate the response of quantitative characteristics of Pinus Eldarica Medw trees to slope and geographical variations in Chitgar Forest Park. For this aim, 70 samples of circular plot forms of 2R were selected from four main geographical aspects and three slope levels of 0-15, 16-30, and 31-45 percent. In each sample, the diameter at breast height and height of trees were measured. The results showed that slope and aspect had effects on the diameter at breast height and height of pine Eldarica Medw of Tehran whereas the interaction between slope and aspect was significant on the height of trees. Also, the thickest and highest pine Eldarica Medw trees are located in the eastern and southern aspects and in the 0-15 percent slope. In order to increase the size of quantitative features, the plantation of this species in similar ecological regions in the eastern and southern aspects and in relatively mild slopes is recommended.