بررسی غنا و تنوع گونه‌ای پرندگان مناطق حفاظت‌شدۀ استان کهگیلویه و بویراحمد و تأثیرپذیری آن از شکل و اندازۀ منطقه

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه محیط زیست دانشکدۀ منابع طبیعی، دانشگاه صنعتی اصفهان

2 کارشناس محیط زیست استان کهگیلویه و بویراحمد

چکیده

تعیین غنا و تنوع گونه‌ای مناطق در اولویت‌بندی حفاظتی اهمیت دارد. علاوه بر این تعیین پارامترهای سیمای سرزمین که بر غنای گونه‏ای یک منطقه اثر می‌گذارند در طراحی و انتخاب مناطق حفاظت‌شده حائز اهمیت است. استان کهگیلویه و بویراحمد سرزمینی کوهستانی و نسبتاً مرتفع است که دشت‌ها و مناطق جنگلی بخش بزرگی از مساحت آن را در بر گرفته‌اند. این استان پهناور تنوع گونه‌ای زیادی دارد و شش منطقۀ حفاظت‌شده شامل دنا، خئیز و سرخ، دنای شرقی، خامین، دیل و تنگ سولک برای حفظ این تنوع گونه‌ای ارزشمند احداث شده‌اند. در این پژوهش تنوع و غنای گونه‌ای مناطق مذکور مقایسه و تأثیر وسعت و شکل منطقه بر غنا و تنوع گونه‌ای بررسی شد. در‌مجموع 52 گونه پرنده در این مناطق مشاهده و ثبت شد. بیشترین مقدار غنا و تنوع گونه‌ای در منطقۀ حفاظت‌شدۀ دنا و کمترین مقدار در منطقۀ تنگ سولک به دست آمد. آنالیز داده‏ها با استفاده از رگرسیون خطی بیانگر تأثیرپذیری مثبت غنا و تنوع گونه‏ای پرندگان از مساحت منطقۀ حفاظت‌شده و تأثیرپذیری منفی این پارامترها از شکل منطقه است. با توجه به روند تخریب زیستگاه‌ها و محدود‌شدن حفاظت از تنوع زیستی به مناطق چهارگانه، جلوگیری از کاهش نسبت محیط به مساحت و تلاش در افزایش وسعت مناطق می‏تواند در راستای مدیریت بهتر و حفاظت از تنوع زیستی استان کهگیلویه و بویراحمد ثمربخش باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating birds' diversity and richness of Kohgiluyeh & Boyer Ahmad protected areas and the influence of area size and shape on diversity and richness

نویسندگان [English]

  • mansoureh malekian 1
  • raheleh Bagheri 2
1 Department of Natural Resources, Isfahan University of Technology, Isfahan, I.R.Iran
2 Department of Environment, Kohgiluyeh & Boyer Ahmad Province, I.R.Iran
چکیده [English]

Investigating species diversity and richness is essential for defining conservation priorities. In addition, determining landscape parameters influencing species diversity and richness is important for selecting and designing parks and protected areas. Kohgiluyeh & Boyer Ahmad Province is a mountainous region, comprises hills, mounds, forests and plains. This vast province has high species diversity and six protected areas, including Dena, Khayyz and Sorkh, Eastern Dena, Khamyn, Daele and Solak, have been established to maintain this diversity. The present study aimed to compare species diversity and richness of the six protected areas and investigate the influence of area, size and shape on bird species richness and diversity. Overall, 52 bird species were recorded. The maximum values of species diversity and richness belonged to Dena Protected Area and the minimum values were obtained for Solak Protected Area. Linear regression analysis revealed the positive effect of area and the negative effect of shape on bird species richness and diversity. Due to the increasing habitat destructions which restricted the conservation of biodiversity to protected areas, it is necessary to prevent further reduction of perimeter to area ratio with an effort to increase area size. This might help to better manage and protect the biodiversity of Kohgiluyeh & Boyer Ahmad province.

کلیدواژه‌ها [English]

  • Kohgiluyeh & Boyer Ahmad
  • protected areas
  • Shannon-wiener index
  • species diversity
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