مطالعه جوامع گیاهی بخش بهاربن جنگل خیرود و ارتباط آن با عوارض زمین

نوع مقاله : علمی- پژوهشی

نویسندگان

1 کارشناس ارشد، گروه جنگل‌داری و اقتصاد جنگل، دانشکده منابع طبیعی

2 استاد، گروه جنگل‌داری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران

3 دانشیار، گروه جنگل‌داری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران

4 استادیار، گروه جنگل‌داری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران

5 مربی پژوهش، مؤسسه تحقیقات جنگلها و مراتع کشور

چکیده

در این مطالعه به بررسی فلوریستیکی و جامعه‌شناختی گیاهی بخش بهاربن جنگل آموزشی و پژوهشی خیرود واقع در 7 کیلومتری شرق نوشهر و ارتباط آن با خصوصیات شکل زمین پرداخته شده است. به‌منظور تعیین جوامع و زیرجوامع گیاهی جنگلهای بهاربن از مکتب براون- بلانکه (زوریخ- مون‌پلیه) استفاده شد. تعداد 51 قطعه نمونه 100 مترمربعی در رویشگاه‌های مختلف برداشت شد. تجزیه و تحلیل داده‌ها به روشهای AFC و CAH با استفاده از برنامه Anaphyto انجام شد. نتایج این بررسی نشان داد که 9 جامعه Querco macrantherae-Carpinetum orientalis، Fraxino excelsioris-Aceretum velutini، Parrotio persicae-Quercetum castaneifoliae، Parrotio persicae-Carpinetum betuli، Pterocaryo fraxinifoliae-Alnetum subcordatae، Aceri velutini-Fagetum orientalis، Carpino betuli-Fagetum orientalis، Rusco hyrcani-Fagetum orientalis و Fagetum orientalis در این بخش وجود دارد. پس از شناسایی جوامع، ارتباط آنها با خصوصیات شکل­ زمین به روش DCA برنامه CANOCO 4.5 مورد بررسی قرار گرفت. نتایج نشان داد که در محدوده مورد مطالعه، جوامع گیاهی با ارتفاع و جهت جغرافیایی رابطه معنی‌داری دارند؛ اما رابطه آنها با شیب زمین معنی‌دار نیست.

کلیدواژه‌ها

عنوان مقاله [English]

Plant associations in Baharbon district of Kheyroud Forest and its relationship to land forms

نویسندگان [English]

  • Jeinoos Jashni 1
  • Mohammad Reza Marvi Mohadjer 2
  • Ghavamoddin Zahedi Amiri 3
  • Vahid Etemad 4
  • Behnam Hamzehee 5
1 M.Sc. Student, Dept. of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran
2 Professor, Dept. of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran
3 Associate prof., Dept. of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran
4 Assistant prof., Dept. of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran
5 Senior Research Expert, Research Institute of Forests and Rangelands
چکیده [English]

The aim of this research was to study the plant associations in Baharbon district of Kheyroud Forest (north of Iran) and their relationship to physiographical factors. Determination of plant associations and sub associations were done, using Braun - Blanquet School. For this purpose, 51 releves consisting of 100 m2 area, were located at different sites. The phytosociological data was analyzed by the Factorial Correspondences (AFC) and Classification Ascendant Hierarchique (CAH) methods, using the Anaphyto software. Nine associations consisting of Querco macrantherae-Carpinetum orientalis, Fraxino excelsioris-Aceretum velutini, Parrotio persicae-Quercetum castaneifoliae, Parrotio persicae-Carpinetum betuli, Pterocaryo fraxinifoliae-Alnetum subcordatae, Aceri velutini - Fagetum orientalis, Carpino betuli-Fagetum orientalis, Rusco hyrcani-Fagetum orientalis and Fagetum orientalis were distinguished in this forest. Then relationships between the associations and the landform features were investigated, applying the DCA method and CANOCO 4.5 software. The results showed that although there were significant relationships between the associations and the altitude and the geographical aspects; but there was not significant relationship with the slope gradient.

کلیدواژه‌ها [English]

  • Phytosociology
  • Braun-Blanquet school
  • AFC
  • CAH
  • DCA
  • Baharbon district
  • Hyrcanian Forest

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