Effect of soil properties, elevation and slope aspect on distribution of Camphorosma monspeliaca L. in Doto-Tang Sayad region of Chaharmahal and Bakhtiari province

In this research, habitat of Camphorosma monspeliaca was studied ecologically. This species has spread into an area of more than 3500 ha within Doto-Tangsayad in Chaharmahal and Bakhtiari Province. After identification of the stands of this species and selecting stands with and without this species; vegetation cover and environmental factors such as topography, physical and chemical properties of soil were studied Random-Systematic sampling method was considered with plots which that area was determined by minimal area method. Plant species was recorded along five transect per stand. In the present study quantities parameters of C. monspeliaca were analyzed using SPSS software. A matrix of plant stands and environmental factors was prepared and data were analyzed by the Principal Component Analysis (PCA) using PC- ORD software. Result indicated that Camphorosma monspeliaca species has scattered more along the second axis that plant stands were in southern aspect and had more density and cover percentage. From the results obtained on three topography position, slope aspect has significant difference on distribution of this species. In general, the most important effective environmental factors in vegetation distribution pattern were elevation, sodium, organic matter, sand, calcium carbonate and magnesium.