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الگوی مکانی و کنش متقابل دارمازو (Quercus infectoria Oliv.) و وی‌ول (Q. libani Oliv.) در دو توده کمتر دست‌خورده و تخریب‌شده (مطالعه موردی: جنگل‌های خدرآباد سردشت) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 9، دوره 24، شماره 1 - شماره پیاپی 63، فروردین 1395، صفحه 88-77 اصل مقاله (940.43 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2016.106690 | ||
| نویسندگان | ||
| کریم بیابانی1؛ بابک پیله ور* 2؛ امیر صفری3 | ||
| 1دانشجوی کارشناسی ارشد، گروه جنگل‌داری، دانشکده کشاورزی و منابع طبیعی، دانشگاه لرستان | ||
| 2دانشیار، گروه جنگل‌داری، دانشکده کشاورزی و منابع طبیعی، دانشگاه لرستان، خرم‌آباد | ||
| 3دانشجوی دکتری، گروه جنگل‌داری، دانشکده منابع طبیعی و علوم دریایی نور، دانشگاه تربیت مدرس | ||
| چکیده | ||
| الگوی پراکنش مکانی و کنش متقابل بین گونههای گیاهی برای درک روابط بین‌گونه‌ای و گونه- محیط از اهمیت به‌سزایی برخوردار است. باتوجه به اهمیت جنگل‌های زاگرس و نقش مطالعات الگوی پراکنش مکانی در شناخت و مدیریت رویشگاه‌های جنگلی، پژوهش پیش‌رو به بررسی الگوی پراکنش مکانی دو گونه دارمازو (Quercus infectoria Oliv.)و وی‌ول(Quercus libani Oliv.) پرداخت. در جنگل‌های خدرآباد آذربایجان غربی دو توده تخریب‌شده و کمتر دست‌خورده هر کدام به مساحت پنج هکتار انتخاب شده و آماربرداری صددرصد شدند. مختصات دکارتی همه درختان موجود در هر دو توده محاسبه و درنهایت نقشه مکانی ترسیم شد. به‌منظور تحلیل الگوهای پراکنش مکانی و کنش متقابل گونه‌ها از تابع K رایپلی استفاده شد. نتایج نشان داد که الگوی مکانی در توده کمتر دست‌خورده با استفاده از تابع برای دارمازو کپهای و برای وی‌ول کپهای متمایل به تصادفی و با استفاده از تابع برای هر دو گونه کپهای متمایل به تصادفی بود. الگوی مکانی در توده تخریب‌شده نیز برای هر دو گونه با استفاده از هر دو تابع به‌صورت کپهای بود. در توده کمتر دست‌خورده با استفاده از هر دو تابع، کنش متقابل دو گونه مورد بررسی در مقیاس‌های کوچک جاذبه بود و در مقیاس‌های بزرگتر حضور گونه‌ها به‌صورت مستقل از هم درآمد. شکل کنش در توده تخریب‌شده با استفاده از هر دو تابع در همه مقیاسها به‌صورت جاذبه‌ای بود، بنابراین توصیه می‌شود در جنگلکاریهای احیایی از آمیختگی فردی استفاده شود. | ||
| کلیدواژه‌ها | ||
| تابع L_((r) )؛ تابع O_((r))؛ زاگرس شمالی؛ K رایپلی | ||
| عنوان مقاله [English] | ||
| Comparison of spatial patterns and interspecific association of Gall oak (Quercus infectoria Oliv.) and Lebanon oak (Q. libani Oliv.) in two less degraded and degraded oak stands in northern Zagros (Case study: Khedr Abad, Sardasht) | ||
| نویسندگان [English] | ||
| Karim Biabani1؛ Babak Pilevar2؛ Amir Safari3 | ||
| 1M.Sc. Student, Department of Forestry, Faculty of Agriculture and Natural Resources, Lorestan University | ||
| 2Associate Prof., Department of Forestry, Faculty of Agriculture and Natural Resources, Lorestan University | ||
| 3Ph.D. Student, Department of Forestry, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University | ||
| چکیده [English] | ||
| Spatial pattern and interspecific association between plant species are two important measures for understanding relation between species and their surrounding environment. Regarding the importance of Zagros forests as well as the role of spatial patterns in forest management, this study aimed to investigate spatial patterns of two important species “Quercus infectoria Oliv. and Q. libani Oliv.” in northern Zagros forest. Two forest stands of 5 ha each located in Khedr Abad of West Azerbaijan province were fully calipered. Cartesian coordinates for all trees location were computed and the trees locations were mapped for both stands. Riply’s K function and L(r) and O (r) statistics were used to analyze spatial patterns and interspecific association between plant species. Results showed a clumped pattern for Q. infectoria in less degraded stand using L(r) statistics, while Q. libani tended to random pattern. Using O (r) statistics, the spatial pattern for both species in less degraded stand were clumped that tended to random. However, both species showed a clumped pattern in degraded stand using both statistics. Bivariate statistical analysis showed a positive association between the two species at small scales in less degraded stand, whereas at larger scales the species were independent. Furthermore, the two species were positively correlated at all scales as shown by both statistics. Based on the results, mixed tree plantation is recommended to restore degraded stands via reforestation programs. | ||
| کلیدواژه‌ها [English] | ||
| L(r) and O (r) statistics, northern Zagros, Riply’s K function | ||
| مراجع | ||
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