Document Type : Research Paper
Authors
1 Assistant professor, Islamic Azad University, Science and Research branch, I.R.IRAN.
2 M.Sc. Student, Islamic Azad University, Science and Research Branch, I.R.IRAN.
3 Professor, Faculty of Natural Resources, University of Tehran, I.R.IRAN.
Abstract
The relationship between vegetation and soil properties in Khojier National park, located in Tehran province was investigated. For this purpose, vegetation data was recorded in each plot, based along 3 tansects in each vegetation type. Minimal area method was used for plot size. Density and vegetatin cover were determined. TWINSPAN and DCA tests were used to classify vegetation. Soil sample was taken from 0-20cm of soil depth then transferred to laboratory and prepared for analysis including soil texture, percentage of CaCo3, CaSo4, and pH, EC, P, Ca, Ma and N. For analysis of soil properties in relation to vegetation changes, a multivariate analysis method such as canonical correspondence analysis (CCA) was used. These analyzes were conducted using PC-ORD software. Results showed a significant correlation between vegetation and environmental factors. The most important soil properties affecting on vegetation types were gravel, clay, silt, sand, caso4, caco3, pH, EC, K and elevation. Statistical analysis of the results showed that the vegetation types had a significant difference in terms of percentage of Gravel, CaCo3, CaSo4, Sand, Clay.The most important soil properties affecting on vegetation types were gravel, clay, silt, sand, caso4, caco3, pH, EC, K and the height above sea level. Statistical analysis of the results showed that the vegetation types had a significant difference in view of percentage of Gravel, CaCo3, CaSo4, Sand, Clay.
Keywords
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