Function Ecology effect aspect geographic on the Cypress (Cupresuss sempervirens L.var horizontalis) growth in the Abas Abad Behshahr planting stand

To evaluate the growth of cypress in different aspects (North West, West, Northeast and Southwest) is a pure planting stand in the area Abbas Abad Behshar was considered.
Using the inventory network 75 × 100 m and a stratified random method, 50 samples plot 2 R (200 square meters) in different geographical aspects was carry out. In each sample plots, diameter trees and height of four trees were measured. Excel and SPSS statistical software and statistic analyse and necessary calculations were performed.
The results showed that between amplitude with different aspects of growth, there are significant differences, so that the highest diameter increment in the West aspect (0.53 cm) and the lowest in the North East aspect (0.479 cm) were observed. The maximum height growth in the West and South-West aspecs (0.53 m) and the lowest it has been in the northwest aspect (0.49 m) and for average basal area growth, the highest growth in the West aspect (0.87 m square per ha) and lowest in the North west aspect (0.76 square meters per hectare), respectively. The average volume growth to age, respectively, in the aspect of West aspect (4 sylve per ha) and Northeast aspect (6.3 sylve per hectare) were the highest and lowest values.