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Ecopersia، جلد ۱۲، شماره ۳، صفحات ۲۰۵-۲۱۷
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عنوان انگلیسی Assessing the Effect of Environmental Factors on Plant Diversity in Southern Rangelands of Golestan Province, Iran
چکیده انگلیسی مقاله Aim: The aim of the present study was to investigate beta and alpha diversities in vegetation types, and examine the relationship between the distribution of plant species and environmental factors in the rangelands of southern Golestan province, Iran.
Materials & Methods: The vegetation was sampled using a systematic random sampling approach. In total, 120 plots were placed across the different plant types. Soil samples were collected from a depth of 0-30 cm. Plant species diversity, similarity indices between vegetation types and beta and alpha diversities were calculated using the Past software.
Findings: The highest alpha diversity among annual plants was observed in the F. ovina-A. gossypinus type with a Shannon-Wiener index of 0.927 and a Simpson index of 0.554. While the greatest alpha diversity of shrub plants was associated with the same type with a Shannon-Wiener index of 1.316 and a Simpson index of 0.711. In addition, beta diversity was calculated using the similarity index for vegetation types. The results indicated a Whittaker similarity index (beta diversity) of 0.3, 0.4, and 0.5 for annual plants, shrub plants, and perennial plants, respectively. The analysis revealed that soil texture, N, organic carbon, pH, EC, and aspect were the most significant factors affecting the distribution of plant species.
Conclusion: The results of this research provide useful information about rangelands plant species for basic livestock grazing and soil protection in the studied vegetation types for better land management.
 
کلیدواژه‌های انگلیسی مقاله Vegetation Types,Diversity,Richness,Plant Floristic List
نویسندگان مقاله | Javad Esfanjani
Ph.D. Graduated of Rangeland science, University of Mohaghegh Ardabili, Ardabil, Iran


| Mohammad Ali Zare Chahouki
Department of Rehabilitation of Arid and Mountainous Regions, University of Tehran, Iran


| Shirin Mahmoodi
National Center of Genetic Resources, Agricultural Research Education and Extension Organization, Tehran, Iran
نشانی اینترنتی http://ecopersia.modares.ac.ir/browse.php?a_code=A-10-80626-1&slc_lang=en&sid=24
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