ارتباط بين برخي گونه هاي غالب و خصوصيات شيميايي خاك در منطقه گرمسار

Relationships between dominant species and soil chemical properties in Garmsar region

This survey was conducted to determine relationship between soil characteristic and vegetation in four rang sites in Garmsar region . After selection of indicator vegetation tapes ,sampling of soil and vegetation were performed by randomized - systematic method . There were 3 transects in each vegetation and each transet contained 10 plots . The size of plots depended on diversty and different plants in each area. The distance between plots was 50 meter and vegetation data included floristic list and cover percentage were estimated quantitativaley in cach plot. Soil sample were taken at depths of 0-30 and 30-60 cm in 5 plots of 10 plots withineach site. It means in each site 10 soil samples and totally 40 samples were examined in laboratory. In laboratory physical and chemical characteristic included Clay(%),silt and ,Ec, ph,cao(%),organic material(%),K, Na,Ca ,Mg ,So4, Cl,Co3~,Co4~ were examained. Using SPSS package, variance and Duncan test were applied to analyze the witected data. The results showed regions was varied from Astragalus spp . Stipa barbata to Artimisa, Seidlitzia rosmarinus and finally to Tamarix spp. Finally the most relations between factor and vegetation types considered of the below . The most relation of Tamarix spp and Seidlitzia rosmarinus with Ec and solubae minerals .The most relation of Artemisia sieberi with the texture of soil and the most relation of Astragalus spp Stipa barbata with of soil Lime.