Flora and Life Form Classification of the Summer Rangeland in Dilgan, Kohgiluyeh and Boyer-Ahmad Province

Jahantab, Esfandiar; Alipour, Sajad; Ghanbarian, Gholam Abbas

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Volume 13, Issue 27 (3-2026)

PEC 2026, 13(27): 185-202

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Flora and Life Form Classification of the Summer Rangeland in Dilgan, Kohgiluyeh and Boyer-Ahmad Province

Esfandiar Jahantab ^*

, Sajad Alipour²

, Gholam Abbas Ghanbarian³

Department of Range and Watershed Management (Nature Engineering), Faculty of Agriculture, Fasa University, Fasa, Iran, Fasa , e.jahantab@fasau.ac.ir
2- Department of Horticultural Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
3- Department of Natural Resources and Environment, Faculty of Agriculture, Shiraz University, Shiraz, Iran

Abstract: (1353 Views)

Understanding the plant species present in a region is essential for ecological research, ecosystem management, and plant species conservation. Accordingly, this study aimed to identify and examine the flora and life form classification of the summer rangeland in Dilgan. Floristic identification and analysis were conducted through field visits during the growing season, field surveys, consulting existing references, leveraging expertise from botanical specialists, and interviewing experts. Plant sampling was carried out in 2024 and 2025. The results indicated the presence of 191 plant species, belonging to 142 genera and 47 families. Among these, Asteraceae, Lamiaceae, and Brassicaceae exhibited the highest diversity. According to the collected data, the genera Astragalus (7 species), Centaurea (5 species), and Allium (4 species) had the greatest number of species within the study area. The phytogeographical region of Iran-Turan (IT) accounted for the majority of species with 63.87%, followed by the IT-ES region representing 14.14% of species. Regarding life forms, hemicryptophytes (Hem) were the most frequent, comprising 53.40% of the species, followed by Therophytes (Th) with 20.42% abundance. Understanding the frequency and distribution of species life forms across different phytogeographical regions enables prioritization of sensitive areas and key species in conservation planning. Additionally, the study area hosts 33 endemic species (17.27%), 1 vulnerable species (VU) (0.52%), 27 species classified as least concern (LR) (14.13%), and 6 species disclosed as data deficient (DD) (3.14%). Considering the high species diversity in the region, sustainable grazing management based on pasture carrying capacity and collaboration with nomadic communities can help prevent environmental degradation and extinction of native plant species.

Article number: 12

Keywords: Endemic, Flora, Raunkiaer Classification, Floristic List, Range Management, Native Plant Conservation

Full-Text [PDF 1606 kb] (560 Downloads)

Type of Study: Applicable | Subject: Special
Received: 2025/09/27 | Accepted: 2025/11/1 | Published: 2026/03/12

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Jahantab E, Alipour S, Ghanbarian G A. Flora and Life Form Classification of the Summer Rangeland in Dilgan, Kohgiluyeh and Boyer-Ahmad Province. PEC 2026; 13 (27) : 12
URL: http://pec.gonbad.ac.ir/article-1-1032-en.html

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