مطالعۀ پراکنش گونه‌های گون (Astragalus L) در استان لرستان

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان لرستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، خرم‌آباد، ایران

2 استاد بخش گیاه‌شناسی، مؤسسۀ تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

چکیده
جنس گون (Astragalus) بیشترین تعداد گونۀ گیاهی را در ایران دارد. به‌منظور مطالعۀ پوشش گیاهی استان لرستان، مجموعه‌ای از گونه‌های گون‌ استان طی سال‌های 1378 (2001) تا 1391 (2013) جمع‌آوری و شناسایی شد. نتایج مطالعۀ حاضر نشان دادند 125 گونه گون متعلق به 29 بخشه در رویشگاه‌های استان لرستان وجود دارند که 40 گونه (32 درصد) از آنها تاکنون از استان لرستان گزارش نشده‌اند. 11 بخشه از 14 بخشه انحصاری و نیمه‌انحصاری ایران در لرستان شناسایی شد. ه‍م‍ی‌ک‍ری‍پ‍ت‍وف‍ی‍ت‌‌ها با 59 گونه (2/47 درصد) فراوان‌ترین شکل زیستی Astragalus در استان لرستان هستند. توپوگرافی عامل مهمی در تنوع گونه‌های Astragalus در لرستان است. در ارتفاعات پایین‌دست گونه‌هایی مانند A. brachyodontus Boiss.، A. siliquosus Boiss.، A. hamosus L. و در ارتفاعات بالادست گونه‌های بوته‌ای خاردار و بالشتک‌مانند A. myriacanthus Boiss.، A. gossypinus Fisch.، A. floccosus Boiss.، A. verus Olivier، A. effusus Bunge و A. ophiocarpus Bunge شناسایی شدند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Distribution of Astragalus Spp. in Lorestan Province

نویسندگان [English]

  • Mohammad Mehrnia 1
  • Aliasghar Maassoumi 2
1 Assistant Professor Lorestan Agricultural and Natural Resources Research and Education Center, AREEO, Khorramabad, Iran
2 Professor Division of Botany, Institude of forest and rangelands, AREEO,Tehran, Iran
چکیده [English]

Abstract
The genus Astragalus L. has the highest number of plant species in Iran. In order to study the vegetation of Lorestan province between 2001 to 2013, a collection species of Astragalus L. in province of Lorestan was collected and identified. This study showed that there are 125 species belong to 29 Section in different habitats of Lorestan province. Forty species (32%) have not been reported from Lorestan province. from the 14 endemic and semi-endemic sections of Iran, 11 of them were identified in Lorestan. Hemicryptophytes with 59 species (47.2%) are the most abundant life form of Astragalus in Lorestan province. Topography is an important factor in the diversity of Astragalus species in Lorestan. At lowlands species such as A. brachyodontus Boiss., A. siliquosus Boiso.,
A. hamosus L., and in high-lands spiny bushes and cushions such as A. myriacanthus Boiss.,
A. gossypinus Fisch., A. floccosus Boiss., A. verus Olivier, A. effusus Bunge and A. ophiocarpus Bunge Were identified.
 
 
 

کلیدواژه‌ها [English]

  • Key words: Astragalus
  • Diversity
  • Endemic
  • Lorestan Province
  • Highland
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