Soil-Vegetation Relationships In Rangelands Of Qom Province
2007
Jafari, N., Member of Scientific Board of Tehran University, | Zare Chahouki., M.A., Member of Scientific Board of Tehran University, | Tavili., A., Member of Scientific Board of Tehran University, | Kohandel, A., Members of Scientific Board of Tehran University.
The aim of this research was to study the relationships between soil characteristics and vegetation in 14 range sites of Qom province. After selection of the indicator vegetation types, sampling of soil and vegetation were performed with randomized-systematic method. Considering variation of vegetation and species types, size and number of plots were determined. Vegetation data including floristic list and cover percentage were estimated quantitatively in each plot. Soil samples were taken at depth of 0-60 cm (rooting depth) in each plot. The measured soil variables included texture, lime, acidity (pH), ECe and organic matter (OM). Principal component analysis (PCA) was used to analyze the collected data. The results showed that the vegetation distribution pattern was mainly related to soil characteristics such as texture, salinity, and lime.
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