Plant communities across a vegetation profile in Kaboodan Island of Urmia Lake (northwest of Iran)

Document Type : Research Paper

Author

PhD Graduate, Department of Plant Sciences, School of Biology, College of Sciences, University of Tehran, Tehran, Iran

10.22092/bot.j.iran.2022.360414.1327

Abstract

In the present study, the vegetation of Kaboodan Island, the largest island of saltwater Urmia Lake (northwest of Iran) was documented, predominantly based on a vegetation profile established across the island. For this purpose, vegetation sampling was carried out along a north-south profile together with some scattered points. Vegetation data analysis was accomplished in the form of classification using TWINSPAN and ordination using DCA. The synoptic table of vegetation units and the schematic view of vegetation profile were also presented. From a total of 107 relevés, 24 plant communities were distinguished according to floristic and ecological characteristics in Kaboodan Island. They were categorized into three groups including: 1. Plant communities formed on the dried bed of Urmia Lake (on the island present-day shorelines), 2. Plant communities developed on the island former shorelines, and 3. Plant communities found on hills adjacent to shorelines, steppe areas and valleys of the island. The result of the present survey showed that, Kaboodan Island with a less-touched ecosystem and no anthropogenic activities over decades is a home to various plant species and vegetation types. Considering to unstable hydrological condition of Urmia Lake in recent years, conservation and vegetation monitoring is highly recommended for this and other islands of the lake facing the succession trend.
 
 

Keywords

Article Title [Persian]

اجتماعات گیاهی در امتداد پروفیل پوشش گیاهی در جزیره کبودان دریاچه ارومیه (شمال‌غرب ایران)

Author [Persian]

  • عاطفه قربانعلی زاده
دانش‌آموخته دکتری، بخش علوم گیاهی، دانشکده زیست‌شناسی، پردیس علوم پایه، دانشگاه تهران، تهران، ایران
Abstract [Persian]

در این مطالعه، پوشش گیاهی جزیره کبودان، بزرگترین جزیره دریاچه آب شور ارومیه واقع در شمال‌غرب ایران عمدتا براساس پروفیل پوشش گیاهی مستقر در عرض جزیره مورد بررسی قرار گرفت. به این منظور، نمونه‌برداری پوشش گیاهی در امتداد یک پروفیل شمالی-جنوبی و برخی نقاط پراکنده صورت گرفت. تجزیه و تحلیل داده‌های پوشش گیاهی در قالب طبقه‌بندی با استفاده از روش TWINSPAN و رسته‌بندی با به کارگیری روش DCA انجام شد. جدول خلاصه شده واحدهای رویشی و تصویر شماتیک پروفیل پوشش گیاهی ارایه شدند. از مجموع 107 رولوه پوشش گیاهی، 24 اجتماع گیاهی با در نظر گرفتن جنبه‌های فلورستیکی و بوم‌شناختی در جزیره کبودان شناسایی شدند. این اجتماعات در سه گروه جای داده شدند که عبارتند از: 1- اجتماعات گیاهی شکل‌گرفته در بستر خشک شده دریاچه ارومیه (در ساحل کنونی جزیره کبودان)؛ 2- اجتماعات گیاهی توسعه یافته در ساحل قبلی جزیره و 3- اجتماعات گیاهی موجود در تپه‌ماهورهای مجاور خطوط ساحلی، مناطق استپی و دره‌های جزیره کبودان. در نتیجه بررسی حاضر مشخص گردید که جزیره کبودان با اکوسیستم کمتر دست‌خورده و بدون فعالیت‌های انسانی در طول دهه‌ها، دربردارنده گونه‌های متنوع گیاهی و تیپ‌های مختلف پوشش گیاهی است. با توجه به وضعیت آبی ناپایدار دریاچه ارومیه در سال‌های اخیر، حفاظت و نظارت بر پوشش گیاهی این جزیره و سایر جزایر دریاچه ارومیه که با روند توالی روبرو هستند، مؤکدا توصیه می‌گردد.
 
 

Keywords [Persian]

  • جزیره
  • دریاچه شور
  • رسته‌بندی
  • طبقه‌بندی
  • ناحیه ایران و تورانی

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Rostaniha
Volume 23, Issue 2 - Serial Number 67
December 2022
Pages 213-237

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History

  • Receive Date: 05 July 2022
  • Revise Date: 08 September 2022
  • Accept Date: 19 September 2022

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