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الگوی پراکنش مکانی ویول (Quercus libani Oliv) در جنگلهای بانه، استان کردستان | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 11، دوره 25، شماره 3 - شماره پیاپی 69، مهر 1396، صفحه 463-473 اصل مقاله (383.29 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2017.112880 | ||
| نویسندگان | ||
| ستار سلطانیان* 1؛ مازیار حیدری2؛ اسماعیل خسروپور3 | ||
| 1هیئت علمی گروه محیط زیست، دانشکده محیط زیست و منابع طبیعی، دانشگاه صنعتی خاتمالانبیاء بهبهان، بهبهان، ایران | ||
| 2دکتری جنگلداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 3دکتری 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 | ||
| زاگرس شمالی؛ روش مربع تی؛ روشهای فاصلهای؛ شاخص ابرهات | ||
| عنوان مقاله [English] | ||
| Spatial pattern of Lebanon oak (Quercus libani Oliv.) in Baneh forests, Kurdistan province | ||
| نویسندگان [English] | ||
| Sattar Soltanian1؛ Maziar Heydari2؛ Esmaeil Khosropour3 | ||
| 1Department of Environmental Science, Faculty of Environment and Natural Resources, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran | ||
| 2Ph.D. Forestry, Sari Agricultural Sciences and Natural Resources University, Sari, Iran | ||
| 3Ph.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 | ||
| مراجع | ||
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