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
- Angres, V. A., Ch. Messier, M. Beaaudet & A. Leduc, 2005. Comparing composition and structure in old- growth and harvested (selection and diameter-limit cuts) northern hardwood stands in Quebec, Forest ecology and Management, 217(2-3): 275-293.

- Anonymous, 2006. Measurement of diameter at breast height. Agriculture, Fisheries and Conservation Department, Conservation Branch, Nature Conservation Practice Note. 2: 6 p.

- Anonymous, 2007. Measuring tree trunk diameter at breast height. Town of Richmond Hill Tree Preservation By-law, Fact Sheet. 4.0: 2 p.

- Esteghamat, M., 2003. The effect of structure on the regeneration in the natural and managed stands (shelter wood system) in the Ziarat forest (Gorgan). M.Sc. thesis. Gorgan University of Agriculture Sciences and Natural Resources, Gorgan, Iran. 110 p. (In Persian)

- Ghahramany, L., 2005. Modeling and optimization of coniferous stands structure under selective forestry. Thesis for the scientific degree of candidate of agricultural sciences, Moscow, 186 p.

- Ghahramany, L., P. Fatehi & H. A. Ghazanfari, 2008. Investigating the structure of oak forests under local management in northern Zagros (Case study: Armarde-Baneh forests). Proceedings of 3th National Forest Conference, Karaj, Iran. 1 p. (In Persian)

- Heidari Safari Kouchi, A., F. Moradian Fard, A. Eskandari & T. Rostami Shahraji, 2015. Investigation of Some Quantitative and Qualitative Characteristics of Persian Oak (Quercus brantii Lindl.) in Bazoft Forests of Chahar Mahal and Bakhtiari Province, Journal of Zagros Forests Researches, 2(1): 75-91. (In Persian)

- Hehir, C., A. Wolf, L. Rohrer & H. Bugmann, 2009. Forty years of natural dynamics in Swiss beech forests: structure, composition, and the influence of former management, Ecological Applications, 19(7): 1920-1934.

- Hosseinzadeh, J., M. Namiranian, M. R. Marvi Mohajer & Gh. Zahedi Amiri, 2004. Structure of less degraded oak forests in Ilam province, Iranian Journal of Natural Resour, 57(1): 75-90. (In Persian)

- Kint, V. & L. Noel, 2004. Evaluation of sampling methods for estimation of structural indices in forest stands, Ecological Modeling, 180(4): 461-476.

- Milorad, D. & P. Damjan, 2004. Assortment structure in beech coppice stands in Boljevac region, Glasnik Sumarskog fakulteta, 89: 91-102.

- Ondrej, V., J. Rolecek, R. Hedl, M. Kopecky & D. Utinek, 2013. Experimental restoration of coppice-with-standards: Response of understory vegetation from the conservation perspective, Forest Ecology and Management, 310: 234-241.

- Pourhashemi, M., 2003. Study of natural regeneration of oak species in Marivan forests (Case study: Doveyse Forest). PhD Thesis. Department of Forestry. Faculty of Natural Resources. University of Tehran. Tehran, Iran. 166 p. (In Persian)

- Pourhashemi, M., M. Zandebasiri & P. Panahi, 2015. Structural characteristics of oak coppice stands of Marivan Forests, Journal of Plant Researches (Iranian Journal of Biology), 27(5): 766-776. (In Persian)

- Mahamed Shabanloo, A., 2008. An investigation on natural Hornbeam stands structure in district number 2 Shastkolate forest. M.Sc. thesis. Gorgan University of Agriculture Sciences and Natural Resources. Gorgan, Iran, 110 p. (In Persian)

- Mahdiani, A., 2008. The Comparison of Structure and Major Specification of Oak (Quercus macranthera) Forest Stand in Golestan Province. M.Sc. thesis. Gorgan University of Agriculture Sciences and Natural Resources. Gorgan, Iran, 77p. (In Persian)

- Mahdiani, A. R., H. Heydari, R. Rahmani & D. Azadfar, 2012. Structure of Oak (Quercus macranthera) Forest stands in the Golestan Province, Journal of Wood and Forest Science and Technology, 19(2): 23-42. (In Persian)

- Shokri, R. A., R. Basiri & H. Taleshi, 2017. Effect of fire on structure and regeneration of oak coppice trees in Lorestan province (Case study: Tangeh Ghale area in Kuhdasht), Journal of Forest Research and Development, 3(2): 163-174. (In Persian)

- Teimoorzadeh, A., A. Ghorbani & A. H. Kavianpoor, 2015. Study on the flora, life forms and chorology of the south eastern of Namin forests (Asi-Gheran, Fandoghloo, Hasani and Bobini), Ardabil province, Journal of Plant Researches (Iranian Journal of Biology), 28(2): 264-275. (In Persian)

- Yousefpour, R., 2002. Quantitative and Qualitative Analysis of Oriental Beech (Fagus Orientalis L.) Stands in Fandoghlou Area towards Close-to-nature Forestry System. M.Sc. thesis. University of Tehran. Teharn, Iran, 115 p. (In Persian)

- Zobeiry, M., 2001. Forest Biometry. Tehran University press, Tehran, 256 p. (In Persian)