ویژگی‌های ساختاری توده‌های جنگلی شاخه‌زاد در جنگل فندقلوی اردبیل

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دانشجوی دکتری جنگل‌شناسی و اکولوژی جنگل، دانشکده منابع طبیعی، دانشگاه تهران، تهران، ایران.

2 استاد، گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی دانشگاه تهران، تهران، ایران.

3 دانشیار، گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی دانشگاه تهران، تهران، ایران.

4 استادیار دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل

چکیده

امروزه بررسی ساختار جنگل از مباحث مورد توجه و ضروری به‌ویژه در راستای اهداف جنگل‌شناسی نزدیک به طبیعت است. این پژوهش با هدف شناسایی ویژگی‌های ساختاری توده‌های شاخه‌زاد در جنگل‌ فندقلوی استان اردبیل انجام شد. پس از جنگل گردشی اولیه سه توده جنگلی شاخه‌زاد انتخاب و در هر توده، سه قطعه‌نمونه یک هکتاری (100×100 متر) انتخاب و اطلاعات مربوط به ساختار جنگل اندازه‌گیری و ثبت شد. به‌منظور بررسی زادآوری در هر یک از قطعات نمونه، ۲۵ قطعه‌نمونه 20 متر­مربعی (4×5 متر) در قالب یک شبکه آماربرداری منظم مورد ارزیابی قرار گرفت. فراوانی زادآوری در طبقه‌های قطری و ارتفاعی به تفکیک گونه در هر قطعه ثبت شد. نتایج این پژوهش نشان داد که راش در یکی از رویشگاه‌ها به‌عنوان گونه اصلی و تیپ غالب و در دو رویشگاه‌ دیگر به‌عنوان گونه همراه با ممرز و فندق بود. نمودار پراکنش تعداد در طبقات قطری توده‌ها نشانگر توده‌های ناهمسال نامنظم بود. مقایسه میانگین مشخصه­های ساختاری رویشگاه‌های مورد بررسی، اختلاف معنی‌داری را در سطح 5 درصد بین رویشگاه‌ها نشان داد.

کلیدواژه‌ها

عنوان مقاله [English]

Structural characteristics of coppice forest stands in Fandoghloo Forest, Ardebil Province Province

نویسندگان [English]

  • Ashraf Aghabarati 1
  • Mohammad Reza Marvie Mohajer 2
  • Vahid Etemad 3
  • Kiomars Sefidi 4
1 PhD student of Silviculture and Forest Ecology, Faculty of Natural Resources, University of Tehran, Tehran, I. R. Iran.
2 Professor, Faculty of Natural Resources, University of Tehran, Tehran, I. R. Iran.
3 Associate Professor, Faculty of Natural Resources, University of Tehran, Tehran, I. R. Iran.
4 Assistant Professor, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili,, Ardabil, I. R. Iran.
چکیده [English]

The study of forest structure is one of the basic requirements to achieve the objectives of close to nature silviculture. The purpose of this study was to identify the structural characteristics of coppice forest stands in Fandoghlou forest, Ardebil province. Three representative sites were carefully selected after detailed field survey. In each site, 3 sample plots with one hectare area (100×100 m) were established according to a random systematic design. In addition, in each sample plot, 25 subplots (4×5m) were determined for regeneration study. In each microplot, the frequency of regeneration was recorded in different diameter and height classes. Data were analyzed using appropriate softwares (Excel and SPSS). Results showed that, Fagus orientalis Lipesky, is the dominant species in one of the sites and in two other sites, beech accompanied hornbeam and hazelnut. The situation of stand structure and regeneration in site one and two were better than site three. Distribution charts of number in diagonal classes showed uneven-aged and irregular stands. Mean comparison of structural parameters in studied sites showed a significant difference at 5% confidence level for various sites.

کلیدواژه‌ها [English]

  • Beech
  • Coppice forest
  • Fandoghloo
  • Forest structure
  • Regeneration

مراجع

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پژوهش و توسعه جنگل
دوره 4، شماره 2
شهریور 1397
صفحه 223-239

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