Investigation of the vegetative characteristics of Astragalus fasciculifolius and their relationship with soil properties in three habitats of Fars Province

Document Type : Original Article

Authors

Department of Natural Resources, Yazd University, Yazd, Iran.

10.22091/ethc.2025.12998.1061

Abstract

Objective: This study aimed to investigate the relationship between the vegetative characteristics of Astragalus fasciculifolius and soil properties across three habitats located in the counties of Gir and Karzin, Fars Province, Iran.
Methods: Three habitats were selected within Gir and Karzin counties. Vegetation sampling was conducted using the line intercept transect (LIT) method. Plant height was measured with a tape measure, and plant density was determined by counting the number of individuals of the species within each plot. For soil analysis, three soil profiles were excavated in each habitat. Soil samples were collected from two depths: a surface layer (0-30cm) and a subsurface layer (30-60 cm).
Results: The results revealed significant differences in both vegetative and soil properties among the three habitats. Magnesium, phosphorus and lime showed significant variations at the 1% and 5% probability levels in both soil depths. However, nitrogen showed significant differences only in the surface layer. The parameters of pH and EC in the deeper layer, as well as calcium and potassium in the surface layer, did not differ significantly among habitats.
Conclusion: Astragalus fasciculifolius was found to grows in soils with an EC of 0.4-0.8 dS/m and salinity up to 0.8. The species prefers slightly acidic soils with higher levels of nitrogen, phosphorus, magnesium, lime, and organic matter, and tends to grow more vigorously in lighter-textured soils.

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Ethnobiology and Biodiversity Conservation
Volume 2, Issue 3 - Serial Number 7
September 2025
Pages 51-61

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