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کمیت، کیفیت و فرم تنة درختان در سه پارسل بهره‌برداری شده، حفاظتی و تفرجی در توده‌های راش آمیخته، (مطالعة موردی: جنگل ناو اسالم) | ||
| نشریه جنگل و فرآورده های چوب | ||
| دوره 76، شماره 2، شهریور 1402، صفحه 153-164 اصل مقاله (781.89 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jfwp.2023.355827.1243 | ||
| نویسندگان | ||
| سرخوش کرمزاده1؛ مهرداد نیکوی* 1؛ فرزام توانکار2؛ کامبیز آبکنار1 | ||
| 1گروه علوم و مهندسی جنگل، دانشکدة منابع طبیعی، دانشگاه گیلان، صومعه‌سرا، ایران. | ||
| 2گروه جنگلداری، دانشگاه آزاد اسلامی واحد خلخال، خلخال، ایران. | ||
| چکیده | ||
| در پژوهش حاضر کمیت، کیفیت و فرم تنة درختان در سه پارسل بهره‌برداری شده، حفاظتی و تفرجی در توده های راش آمیخته ناو اسالم بررسی شد. کیفیت و فرم تنة درختان با استفاده از روش نمونه‌برداری تصادفی منظم اندازه‌گیری و ارزیابی شد. نتایج نشان داد که فراوانی درختان زنده در پارسل تک‌گزینی (268 اصله در هکتار) و تفرجی (210 اصله در هکتار) کمتر از پارسل حفاظت‌شده (389 اصله در هکتار) بود. فراوانی گونه‌های راش، شیردار و توسکا در پارسل بهره‌برداری شده و گونه‌های راش و توسکا در پارسل تفرجی به‌طور معنی‌داری بیشتر از پارسل حفاظت شده بود. میانگین فراوانی خشک‌دارها در پارسل‌های حفاظتی، تک‌گزینی و تفرجی به‌ترتیب 18/3، 9/4 و 8/4 اصله در هکتار بود. فراوانی درختان بدفرم در پارسل پارسل‌های حفاظتی، تفرجی و بهره برداری شده به‌ترتیب 8/9، 5/5 و 2/8 درصد بود. هرچند بهره‌برداری موجب افزایش فراوانی بد فرمی‌های انحناء و کجی شده بود، اما در مقابل موجب کاهش فراوانی بد فرمی‌های مخروطی و پوسیدگی شده بود. در مجموع، فراوانی درختان با کیفیت و فرم مناسب در پارسل‌های بهره‌برداری شده و تفرجی بیشتر از پارسل حفاظتی بود. نظارت منظم و بلندمدت کمیت، کیفیت و فرم تنة درختان ممکن است رویکرد خوبی برای همسوسازی اهداف اکولوژیک و اقتصادی در مدیریت جنگل باشد. | ||
| کلیدواژه‌ها | ||
| بدفرمی تنه درخت؛ برش تک‌گزینی؛ پوسیدگی تنه؛ خشک‌دار؛ توده های راش آمیخته | ||
| عنوان مقاله [English] | ||
| Quantity, quality and bole form of trees in logged, protected, and recreational parcels in mixed beech stands (Case study: Nav-Asalem forest) | ||
| نویسندگان [English] | ||
| Sarkhoosh Karamzadeh1؛ Mehrdad Nikooy1؛ Farzam Tavankar2؛ Kambiz Tahery Abkenar1 | ||
| 1Department of forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Iran. | ||
| 2Department of Forestry, Khalkhal Branch, Islamic Azad University, Khalkhal, Iran. | ||
| چکیده [English] | ||
| In the current study, the quantity, quality, and bole form of trees were investigated in three parcels of selectively logged, protected, and recreational areas in the mixed beech (Fagus orientalis) stands in Nav-e Asalem forests. The quality and bole form of trees were measured and evaluated through systematic plot sampling. The results of the research showed that the abundance of live trees in the selectively logged parcel (268 trees ha-1) and recreational parcel (210 trees ha-1) was lower than that in the protected parcel (389 trees ha-1). The abundance of beech, maple (Acer cappadocicum), and alder (Alnus glutinosa) species in the selectively logged parcel, and the abundance of beech and alder species in the recreational parcel were significantly higher than their abundances in the protected parcel. The abundance of snags in the protected, selectively logged, and recreational parcels was 18, 9, and 8.4 stems ha-1, respectively. The average abundance of stem deformity in the protected, selectively logged, and recreational parcels was 18.3, 9.4, and 8.4 stems ha-1, respectively. Logging operations, although increased the frequency of leaning and bending stems, decreased the frequency of conical and decaying stems. In general, the abundance of high-quality trees and boles in the selectively logged and recreational parcels was higher than in the protected parcel. Regular and long-term monitoring of the quantity, quality, and form of tree trunks may be a good approach to align ecological and economic goals in forest management. | ||
| کلیدواژه‌ها [English] | ||
| Bole deformity, Mixed beech standsو Selection cutting, Stem decay, Snag | ||
| مراجع | ||
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