معرفی مقدماتی گیاهان آوندی رودخانۀ زاینده‌‌رود

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد سیستماتیک گیاهی، گروه زیست شناسی گیاهی و جانوری ، دانشکدۀ علوم و فناوری‌‌های زیستی، دانشگاه اصفهان، اصفهان، ایران

2 دانشیار گروه زیست‌شناسی گیاهی و جانوری، دانشکدۀ علوم و فناوری‌‌های زیستی، دانشگاه اصفهان، اصفهان، ایران

3 دانش آموخته دکتری سیستماتیک گیاهی، گروه زیست شناسی گیاهی و جانوری، دانشکدۀ علوم و فناوری‌‌های زیستی، دانشگاه اصفهان، اصفهان، ایران

چکیده

رودخانه‌‌ها در جایگاه بخشی از گنجینه‌‌های ملی و طبیعی کشور با در بر داشتن تنوعی از موجودات زنده از اهمیت به‌‌سزایی برخوردارند. به‌‌منظور بررسی و معرفی فلور رودخانۀ زاینده‌‌رود، طی چند سال از ماکروفیت‌‌های آبزی و ساحلی نمونه‌‌برداری شد و فهرستی از گونه‌‌ها به همراه پراکنش جغرافیایی (کوروتیپ) و فرم‌‌های رویشی آنها تهیه شد. درمجموع، 92 گونه و 79 جنس متعلق به 36 خانواده شناسایی شد. خانواده‌‌های Poaceae (15 جنس و 16 گونه)، Amaranthaceae (هشت جنس و 10 گونه)، Asteraceae (هفت جنس و هفت گونه)، Brassicaceae (پنج جنس و پنج گونه)، Fabaceae (چهار جنس و چهار گونه) و Potamogetonaceae (سه جنس و شش گونه) خانواده‌‌های گیاهی مهم منطقه را تشکیل دادند. بیشترین تعداد گونه‌‌های شناسایی‌‌شده به ترتیب دارای فرم رویشی همی‌کریپتوفیت و تروفیت (هرکدام 52/31 درصد)، هلوفیت و هیدروفیت (هرکدام 04/13 درصد)، ژئوفیت و فانروفیت (هرکدام 35/4 درصد) و کامفیت (18/2 درصد) بودند. بررسی انتشار جغرافیایی نشان داد بیشترین سهم پراکنش جغرافیایی گیاهان منطقه متعلق به عناصر چندناحیه‌‌ای (25 درصد)، عناصر جهان‌‌وطن (13/14 درصد)، عناصر ایران و تورانی (04/13 درصد) و عناصر ایران و تورانی - اروپا سیبری (61/7 درصد) است. نتایج حاصل از این مطالعه نشان‌‌دهندۀ تنوع پوشش گیاهان آبزی و ساحلی رودخانۀ زاینده‌‌رود است که باید برای حفاظت به آن توجه شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A Preliminary Introduction to the Vascular Plants of Zayandeh-Rood River

نویسندگان [English]

  • Somayeh Mohaghegh Tabatabaei 1
  • Saeed Afsharzadeh 2
  • Shabnam Abbasi 3
1 MSc. Graduate of Plant Systematic, Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
2 Associate Professor, Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
3 Ph. D. Graduate of Plant Systematic, Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
چکیده [English]

Abstract
Rivers are a part of the national and natural treasures of the country with a variety of living organisms have high importance. In the present study, in order to investigate the flora of Zayandeh-Rood River, a list of aquatic macrophytes (submerged and emergent) and coastal plants along with geographical distribution (chorotype) and their life forms were compiled. A total of 92 species and 79 genera belonging to 36 families were identified. Poaceae (15 genera and 16 species), Amaranthaceae (8 genera and 10 species), Asteraceae (7 genera and 7 species), Brassicaceae (5 genera and 5 species), Fabaceae (4 genera and 4 species), and Potamogetonaceae (3 genera and 6 species) were the most important plant families. The highest number of identified species had the life forms of hemicryptophytes and throphytes (31.52%), helophytes and hydrophytes (13.04%), geophytes and phanerophytes (4.35), and chamaephytes (2.18%), respectively. Investigating the geographical distribution showed that the largest portion of the geographical distribution of plants in the region belonged to plural elements (25%), cosmopolitan elements (14.13%), Irano–Turanian elements (13.04%), and Irano-Turan-Euro-Sieberian elements (7.61%). The study indicated the diversity of aquatic and coastal vegetation of Zayandeh-Rood River that should be considered for conservation. 

کلیدواژه‌ها [English]

  • Iran
  • Geographical Distribution
  • Zayandeh-Rood River Life Form
  • Aquatic Plants

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