The Study of Ecological Conditions of Some Species of oak in the Collection of Kelardasht

This study was designed to investigate the ecological conditions of the Northern Forest Region, the collection of kelardasht, conducted in order to prepare the ground first map, 4 homogeneous Per unit 3 replications were chosen. The unit then proceeded to include Marbrday quantitative characteristics such as diameter, height, trunk height, trunk and crown and qualitative characteristics such as health, happiness crown, crown asymmetry were also dug to determine soil conditions in each unit. A sample of the soil surface horizons, was sent to the laboratory for analysis And finally the data using spss software and Pc.Ordwin was analyzed. Results showed that the increase in the number of hectares Breasts Diameter Avery gradient increases initially and then decreases, with increasing altitude, the mean diameter will enhance But the average tree height above sea level has an inverse relation turning to the north side of west. Avery species decreases per hectare, while the average diameter and average basal area of trees increases.