طبقه‏بندی بانک بذر خاک پایدار و موقتی جنگل حفاظت‌شدۀ سفید پلت پارک جنگلی نور

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناس ارشد جنگل‌داری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران

2 استادیار گروه جنگل‌داری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران

3 دانشیار گروه جنگل‌داری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران

چکیده

این مطالعه طرح طبقه‌بندی بانک بذر خاک جنگل حفاظت‌شدۀ سفید پلت پارک جنگلی نور را ارائه می‌دهد. مطالعۀ پوشش گیاهی و بانک بذر خاک به‌ترتیب به روش براون ـ بلانکه و روش کشت گلخانه‏ای انجام شد. نتایج نشان داد اندازۀ بانک بذر خاک از 713 عدد بذر در متر مربع در لایۀ اول به 1163 عدد بذر در متر مربع در لایۀ دوم افزایش یافت، اما غنای گونه‌ای از 42 گونه به 28 گونه کاهش یافت. از کل 65 گونۀ شناسایی‌شده، فقط بذور تعداد 35 گونه در بخش دائمی بانک بذر خاک منطقه حضور یافتند. به‌طور کلی، نتایج این تحقیق تصریح می‌کند با توجه به اینکه گونه‌های اصلی منطقه توانایی تشکیل بانک بذر خاک دائمی را ندارند، بنابراین، قابلیت بازیابی پوشش گیاهی کنونی منطقه پس از تخریب کلی آن با تکیه بر بانک بذر خاک مقدور نیست.

کلیدواژه‌ها


عنوان مقاله [English]

The Classification of Persistent and Transient Soil Seed Bank in Populus Caspica Protected Area, Noor Forest Park

نویسندگان [English]

  • Azam Noraiy 1
  • Omid Esmailzadeh 2
  • Seyed Gholamali Jalali 3
1 M.Sc. Graduate, Department of Forestry, Natural Resources Faculty, Tarbiat Modares University, Noor, Iran
2 Assistant Professor, Department of Forestry, Natural Resources Faculty, Tarbiat Modares University, Noor, Iran
3 Associated Professor, Department of Forestry, Natural Resources Faculty, Tarbiat Modares University, Noor, Iran
چکیده [English]

The aim of this research is to classification of soil seed bank in Populus Caspica Protected Area. The study of above ground vegetation and soil seed bank were carried out with Braun-Blanquet and seedling emergence method respectively. Results showed that size of soil seed bank in upper layer (713 seeds per m2) were significantly lower than depth layer (1163 per m2) but species richness from 42 to 28 species were reduced with increasing the soil depth. The result also showed that based on the whole plants from the region (65 species) only 35 species were classified in the persistent soil seed bank. Generally, we are concluded main, late-successional, species have not the ability to producing persistent soil seed bank, so the restoration of extant vegetation cannot rely on the soil seed bank in case of the overall habitat is destroyed.

کلیدواژه‌ها [English]

  • above ground vegetation
  • seedling emergence method
  • Populus Caspica Protected Area
  • Soil seed bank
  • Thompson classification
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