Investigation on relationship between some of soil properties and distribution of vegetation types and Eryngium bungei in Baghedar summer region in Bafgh city

In order to optimum management of ecosystem of range, need details and relation between this details including soil and vegetation known. To determine the effect of some soil properties on species distribution of Eryngium bungei in Baghedar summer Bafgh region, Information of three types of vegetative plants were identified Artemisia aucheri - Eurotia ceratoides, Artemisia aucheri - Eryngium bungei and Artemisia aAucheri - Stipa barbata in the form of 20 plots were harvested for each type in the desert. After drilling 27 soil profiles and samples of 0-30 and 30-60 cm, the parameters pH, EC, CaCo3, organic carbon, CaSo4, gravel and soil classification grain distribution was determined in the laboratory. Analysis of variance showed that clay and CaCo3 in the soil first depth and CaCo3 in the soil second depth in three vegetation types with significant differences are. Principal components analysis on 16 soil variables and percent slope showed that the first principal component included percent slope, clay in the second depth and CaCo3 and sand in the first depth, explain 61% of the variations and the second components included sand in the second depth and electrical conductivity and organic matter in the first depth, explain 38% of the variations. The results show that Eryngium bungei be seen on soil with more clay in lower layer and more CaCo3 and less organic carbon and EC in upper soil layers.