رابطة بین گروه گونه‏های اکولوژیک با عوامل محیطی در منطقة حفاظت‌شدة دنای غربی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد جنگل‌داری دانشگاه یاسوج، ‏یاسوج، ایران

2 عضو هیئت علمی ‏‏دانشکدة کشاورزی و پژوهشکدة منابع طبیعی دانشگاه یاسوج، ‏یاسوج، ایران

چکیده

امروزه، تعیین گروه گونه‏های اکولوژیک برای بررسی وضعیت کنونی و آیندة جنگل و ارتباط آن با عوامل محیطی از ضرورت‏های مدیریت جنگل است. بدین‌سبب، تعداد 50 پلات 450 متر مربعی در دامنة ارتفاعی 2091ـ2811 متر از سطح دریا و وسعت 600 هکتار در منطقة حفاظت‏شدة دنای غربی پیاده شد. چهار گروه گونة اکولوژیک با استفاده از آنالیز TWINSPAN در منطقه شناسایی شد که ارتفاع از سطح دریا و شیب و شوری خاک در تفکیک گروه‏ها مؤثر بودند. گروه دوم با داشتن بیشترین درصد پوشش علفی و واقع‏شدن در شیب پایین دارای بهترین شرایط خاکی بود. اما گروه چهارم با گونة شاخص ارس و جاشیر نامساعدترین شرایط محیطی را داشت. در گروه اول نیز بنه گونة شاخص بود که این گروه دارای کمترین ارتفاع و بیشترین میزان آهک و درصد پوشش درختی بلوط بود. نتایج نشان داد که طبقه‏بندی پوشش گیاهی می‏تواند رویشگاه‏ها را تا 80 درصد تفکیک کند. بنابراین، چنین مطالعاتی علاوه بر شناسایی آشیان اکولوژیک گونه‏ها، برای پی‏بردن به وضعیت رویشگاه‏ها نیز کمک می‌کند.

کلیدواژه‌ها

عنوان مقاله [English]

Relationship between Ecological Species Groups and Environmental Factors in Protected Area of Dena

نویسندگان [English]

  • Seyyed Moeinoddin Zamani 1
  • Roghayeh Zolfaghari 2
  • Sohrab Alvaninejad 2
1 MSc. Forestry Student of Yasouj University, Yasouj, Iran
2 Member of Scientific Board of Yasouj University, Yasouj, Iran
چکیده [English]

Today, determination of the ecological species groups for current and future situation of forest and its relationship with environmental factors is necessary for forest management. For this purpose, 50 plots were established in altitude range of 2091- 2811 meters above sea level and 600 hectare in protected area of western Dena. Four ecological groups was identified Using Twinspan analysis that altitude, slope and EC were effective in separation of groups. The second group with most grass cover located in low slope that soil conditions of it was best. But fourth group with Juniperus polycarpos, Ferulago angulata indicator species had unsuitable environmental conditions. In the first group, Pistacia atlantica was indicator species and this group had lowest altitude and highest lime and tree cover of oak. Also, results showed that classification of vegetation can up to 80 percent separately habitats accurately. So, these researches can help to identify of ecological niche of species and to understand of habitats situation. 

کلیدواژه‌ها [English]

  • Indicator Species
  • physiographic and edaphic factors
  • vegetation
  • Zagros

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