بررسی کمّی گیلاس وحشی (Prunus avium L.) در رویشگاه ممجی دره‌سی، آذربایجان شرقی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه محیط ‌زیست، دانشکدۀ منابع طبیعی، دانشگاه یزد، یزد

2 دانشیار، گروه محیط‌ زیست، دانشکدۀ منابع طبیعی، دانشگاه یزد، یزد

10.22034/ijf.2021.259253.1748

چکیده

در این پژوهش محدودۀ 111 هکتاری رویشگاه گیلاس وحشی (Prunus avium L.) در ممجی دره‌سی، آماربرداری 100 درصد شد و همۀ درختان گیلاس وحشی شمارش و اندازه‌گیری شد. با برداشت 23 قطعه‌نمونۀ 1000 متر مربعی فراوانی زادآوری گیلاس نیز محاسبه شد. نتایج نشان داد که 6/86 درصد درختان گیلاس شاداب و سالم‌اند و میانگین ارتفاع، قطر برابرسینه و حجم آنها به‌ترتیب 3/9 متر، 6/12 سانتی‌متر و 08/0 متر مکعب است. بیشترین فراوانی در طبقۀ قطری 10 سانتی‌متر و کمترین آن در طبقۀ قطری 25 سانتی‌متر بود. تعداد، سطح مقطع و حجم به‌ترتیب 14/2 پایه در هکتار، 032/0 مترمربع و 17/0 مترمکعب در هکتار محاسبه شد. همبستگی معنی‌داری بین مشخصات کمّی درختان و شیب وجود نداشت، اما با افزایش ارتفاع از سطح دریا، قطر، ارتفاع و سطح مقطع کاهش پیدا کرد. اغلب درختان (62 درصد) در دامنه‌های شمال شرقی دیده شدند. از نظر ارتفاع، درختان حاضر در دامنه‌های شمال شرق و از نظر قطر، سطح مقطع و حجم، در دامنه‌های شرق بیشتر بودند. در مجموع 53 درخت خشک گیلاس شمارش شد که 43 اصله سرپا و 10 اصله افتاده بودند. این تعداد، 2/18 درصد کل درختان گیلاس را شامل می‌شود. زادآوری گیلاس 1/36 اصله در هکتار محاسبه شد. بیشترین فراوانی درختان سرپا متعلق به گونۀ ممرز و در پی آن بلوط بود و گیلاس وحشی با سهم 3 درصدی در رتبۀ چهارم قرار داشت. به‌منظور تقویت و افزایش تراکم گیلاس وحشی، اجرای عملیات جنگل‌شناسی مناسب برای باز کردن مختصر توده ضروری به نظر می‌رسد.

کلیدواژه‌ها


عنوان مقاله [English]

Quantitative study of wild cherry (Prunus avium L.) in Mamji-Darasii habitat, East Azarbaijan

نویسندگان [English]

  • J Sarhangzadeh 1
  • B Kiani 2
1 Assistant Prof., Dept. of Environmental Sciences, Faculty of Natural Resources, Yazd University, Yazd, I. R. Iran
2 Associate Prof., Dept. of Environmental Sciences, Faculty of Natural Resources, Yazd University, Yazd, I. R. Iran
چکیده [English]

In this study, a habitat of wild cherry (111 ha) in Mamji-Darasii in the province of East Azerbaijan, the city of Kalibar, was fully inventoried and all wild cherry trees were then counted and measured. Frequency of cherry regenerations was also calculated by establishing 23 0.1 ha ample plots. The results showed that 86.6% of the cherry trees were healthy and vital and their mean height, diameter at breast height and volume were 9.3 m, 12.6 cm and 0.08 m3, respectively. The highest and lowest frequencies were 10 and 25 cm DBH classes, respectively . Density, basal area and volume of cherry trees in stand level were calculated as 2.14 individual.ha-1, 0.032 m2.ha-1 and 0.17 m3.ha-1, respectively. There was no significant correlation between the quantitative characteristics of trees and slope but diameter, height and basal area of the cherry trees decreased with increasing the altitude. Most of the trees (62%) were found on the northeast-facing slopes. The trees were taller in the northeast directions and in terms of diameter, basal area and volume, trees in the eastern aspects had higher dimensions. A total of 53 dead trees were counted, of which 43 were standing and 10 fallen. They constituted 18.2% of total cherry trees. The regeneration rate of cherries was 36.1 individual.ha-1. The highest abundance of trees belonged to the hornbeam followed by oak Wild cherry with 3% abundance was in fourth place. To enhance and increase the density of wild cherries, slight opening of the canopy is necessary using appropriate silvicultural operations.

کلیدواژه‌ها [English]

  • Dead tree
  • Elevation
  • Regeneration
  • Sampling
  • Slope
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