Journal of Rangeland

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This study aimed to investigate the effects of environmental factors on the distribution of Prangos ferulacea Lindl. and Prangos uloptera Lindl. in rangelands of Ardabil province. Four habitats of P. uloptera and three habitats of P. ferulacea were selected and three transects with 100m length were established in each habitat. Canopy cover and density of the species were measured in 10 plots with a size of 4 m² along the transects. The elevation, slope, and aspect of the established quadrates were recorded. One-way ANOVA and Tukey test were used to analyze the data. Discriminant analysis was used to assess the importance of the environmental and edaphic factors on the distribution of the species. The results showed that P. uloptera prefered habitats with organic matter of 1.69%, nitrogen of 0.15%, phosphorus of 3 ppm, potassium of 273 ppm, elevation of 2066 m, a slope of 86 %, loamy texture, and mean annual precipitation of 395 mm compared to P. ferulacea . P. ferulacea grow in habitats with lower pH, higher sand, and temperature and sandy loam soil texture compared to P. uloptera. The results of this study can be used by managers to identify appropriate habitats for rehabilitation and restoration programs in rangeland ecosystems.
 

Keywords: Environmental factors, species distribution, discriminant analysis, Prangos ferulacea, Prangos uloptera, Ardabil province.

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