الگوی پراکنش مکانی وی‌ول (Quercus libani Oliv) در جنگل‌های بانه، استان کردستان

نوع مقاله: علمی- پژوهشی

نویسندگان

1 هیئت علمی گروه محیط زیست، دانشکده محیط زیست و منابع طبیعی، دانشگاه صنعتی خاتم‌الانبیاء بهبهان، بهبهان، ایران

2 دکتری جنگل‌داری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

3 دکتری جنگل‌شناسی و اکولوژی جنگل، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران

چکیده

الگوی پراکنش مکانی یکی از جنبه­‌های مهم بوم­‌شناسی جامعه‌های گیاهی است. درختان وی‌ول (Quercus libani Oliv.) حدود 24 درصد جنگل­‌های زاگرس شمالی را تشکیل می‌دهند و در سایر مناطق زاگرس مشاهده نمی­‌شوند. به‌دلیل اهمیت اجتماعی و اکولوژیک این گونه و همچنین به‌منظور مدیریت و پایش بهتر آن، بررسی الگوی مکانی این گونه با روش نمونه‌­برداری فاصله‌­ای مربع تی، هدف این مطالعه درنظر گرفته شد. برای جمع­‌آوری اطلاعات لازم، منطقه­‌ای 40 هکتاری از جنگل­‌های بلکه شهرستان بانه، استان کردستان انتخاب شد. عرصه مطالعاتی ابتدا به قطعه‌های 25 25 متر مربع شبکه­‌بندی شد و آماربرداری در قالب یک شبکه منظم و نمونه‌­برداری­‌ها به‌صورت منظم- تصادفی انجام شد. در مجموع، 43 نقطه با فاصله 100 متر از یکدیگر اندازه­‌گیری شدند. برای بررسی الگوی پراکنش مکانی از شاخص­‌های ابرهات، هینز، هاپکینز، شاخص C و شاخص پراکنش استفاده شد. شاخص‌­­های ابرهات، هینز، هاپکینز و شاخص پراکنش، الگو را پراکنده و شاخص C الگو را کپه­‌ای نشان داد، اما فقط نتیجه شاخص ابرهات معنی­‌دار شد. نتایج به‌دست‌آمده از این پژوهش می‌­تواند در برنامه‌­های مدیریتی توسعه، جنگل‌کاری و برنامه­‌های احیای جنگل به‌منظور حفاظت بهتر از این بوم‌­سازگان در معرض خطر، مفید واقع شود.

کلیدواژه‌ها


عنوان مقاله [English]

Spatial pattern of Lebanon oak (Quercus libani Oliv.) in Baneh forests, Kurdistan province

نویسندگان [English]

  • Sattar Soltanian 1
  • Maziar Heydari 2
  • Esmaeil Khosropour 3
1 Department of Environmental Science, Faculty of Environment and Natural Resources, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
2 Ph.D. Forestry, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
3 Ph.D. Silviculture and Forest Ecology, Faculty of natural Resources, University of Tehran, Karaj, Iran
چکیده [English]

Spatial pattern is an important parameter in ecology of forest communities. Lebanon oak (Quercus libani Oliv.) as a native species covers 24% of northern Zagros forests. Quercus libani plays a significant role in ecological and social conditions of local people. Hence, the present study was conducted to investigate the spatial pattern of this oak species based on T-square sampling in Belake forests, northern Zagros. For this purpose, a 40-ha area was inventoried based on distance method. Systematic- random method with 25×25 m2 plots was used for inventory. A total of 43 random points with 100m distance were determined. Eberhardt, Hines, Hopkines, C index and Index of dispersion were used for dispersion pattern and the results were tested at 5% level. Eberhardt's index, Hines, Hopkines and Index of dispersion showed disperse pattern, while C index indicated clump pattern. But only Eberhardt's index result was significant. Our results can be applied as a useful tool in developing the management programs, afforestation and reforestation programs in order to protect the endangerd ecosystems.

کلیدواژه‌ها [English]

  • Distance methods
  • Eberhardt's index
  • Northern Zagros forests
  • T-square sampling
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