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بررسی جوامع علفی و گلسنگی رویشگاه شمشاد هیرکانی (Buxus hyrcana Pojark) پس از بروز آشفتگی ناشی از بیماری بلایت (مطالعه موردی: جنگل لساکوتی تنکابن) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 2، دوره 27، شماره 1 - شماره پیاپی 75، فروردین 1398، صفحه 1-12 اصل مقاله (725.72 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2019.119177 | ||
| نویسندگان | ||
| رسول خانجانزاده کاکرودی1؛ هادی کیادلیری* 2؛ اسداله متاجی3؛ مجید اسحاق‌نیموری4؛ علی شیخ‌الاسلامی4 | ||
| 1دانشجوی دکتری جنگل‌داری، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران | ||
| 2دانشیار، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران | ||
| 3استاد، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران | ||
| 4استادیار، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد چالوس، چالوس، ایران | ||
| چکیده | ||
| پژوهش پیش‌‌رو با هدف بررسی رویشگاه شمشاد (Buxus hyrcana Pojark) پس از بروز آشفتگی ناشی از بیماری بلایت، در توده راش- شمشادستان (B) و توده مرجع راش خالص (S) در سری سه حوضه 36 لساکوتی واقع در جنوب شرق شهرستان تنکابن، استان مازندران انجام شد. در هرکدام از توده‌‌ها به‌روش تصادفی- منظم، 60 ریزقطعه‌نمونه 25 متر مربعی برای جمع‌‌آوری اطلاعات پوشش علفی انتخاب شدند. همچنین، برای نمونه‌‌برداری از گلسنگ‌‌ها از قاب‌‌هایی با ابعاد 60 × 40 سانتی‌متر استفاده شد. داده‌ها به‌کمک آزمون t مستقل و تحلیل تطبیقی متعارف تجزیه‌وتحلیل شدند. نتایج نشان داد که مقادیر تنوع گونه‌‌ای سیمپسون (07/0±813/0=B، 07/0±649/0=S) و شانون- وینر (0/05±0/83=B، 0/05±0/577=S) پوشش علفی در توده راش-شمشادستان متأثر از بیماری بلایت به‌طور معنی‌‌داری (0/05p <) بیشتر بود. همچنین، نتایج آزمون t مستقل برای گونه‌‌های گلسنگی نشان داد که نمایه‌های تنوع گونه‌‌ای سیمپسون (0/03±0/477=B، 0/03±0/629=S) و شانون- وینر (0/06±0/738=B، 0/06±1/067=S) در توده راش- شمشادستان متأثر از بیماری بلایت به‌طور معنی‌‌داری (0/05p <) کمتر بود. یافته‌های حاصل از تحلیل تطبیقی متعارف نیز حاکی از آن بود که به‌دنبال بروز آشفتگی بیماری بلایت در توده راش- شمشادستان، شرایط محیطی توده تغییر کرد و منجر به تغییرپذیری درصد حضور و تنوع گونه‌‌های مختلف گلسنگ بهعنوان معرف‌‌های زیستی بوم‌سازگان جنگلی شد. همچنین، باز شدن توده به‌واسطه بروز آشفتگی بلایت و افزایش نور رسیده به کف جنگل بهعنوان عامل کلیدی در تغییر ترکیب جوامع پوشش علفی و گلسنگی در توده راش- شمشادستان مشخص شد. | ||
| کلیدواژه‌ها | ||
| تنوع زیستی؛ خاک؛ راش-شمشادستان؛ قارچ؛ گلسنگ | ||
| عنوان مقاله [English] | ||
| Box tree habitat investigation for lichen and herbaceous community after disturbance caused by box blight disease (Case study: Lesakoti Forest, Tonekabon) | ||
| نویسندگان [English] | ||
| R. Khanjanzadeh Kakrodi1؛ Hadi Kiadaliri2؛ A. Mattaji3؛ M. Es-hagh Nimvari4؛ Ali Sheykholeslami4 | ||
| 1Ph.D. Student of Forestry, Faculty of Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran | ||
| 2Associate Prof., Faculty of Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran | ||
| 3Prof., Faculty of Natural Resources, Islamic Azad University Science and Research Branch, Tehran., Iran | ||
| 4Assistant Prof., Faculty of Natural Resources, Islamic Azad University, Chalus Branch, Chalus, Iran | ||
| چکیده [English] | ||
| This study aimed at evaluating the box tree habitat after the occurrence of box blight disease in Buxo-Fagtum orientalis (B) and reference pure Fagetum (S) stands in the district 3, Lesakoty catchment No. 36, southeast of Tonekabon in the Mazandaran Province. In each stand, 60 micro-plots with 25 m2 were established, in which the frequency of herbaceous species was recorded. For sampling lichens, 60 × 40 cm quadrats were used. Raw data obtained from the field were compared and analyzed using an independent t-test and CCA analysis. Results revealed that the Simpson species diversity (B = 0.813 ± 0.07, S = 0.649 ± 0.07) and Shannon-Wiener (B = 0.830 ± 0.05, S =0.577 ± 0.05) of herbaceous species were significantly higher in Buxo-Fagetum orientalis stand (p <0.05). In addition, the independent t-test for lichen species showed that Simpson species diversity (B = 0.477±0 0.03, S = 0.629 ± 0.03) and Shannon-Weiner (B=0.738 ± 0.06, S= 1.067± 0/06) inboxwood-beech stand was significantly lower than those in pure beech site (p <0.05). CCA results showed that the environmental conditions, as well as the variability of the presence and diversity of different species of lichens as forest ecosystem bio-indicators were changed, mainly due to the boxwood blight disease in boxwood-beech stand. Further, stand opening caused by disturbances and increase of light reaching the forest floor was identified as a key factor in changing the composition of herbaceous and lichen communities in Buxo-Fagetum orientalis stands. | ||
| کلیدواژه‌ها [English] | ||
| Biodiversity, Buxo-Fagetum orientalis, fungi, lichen, soil | ||
| مراجع | ||
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