مجله جنگل ایران

مجله جنگل ایران

تحلیل ساختار توده­های جنگلی قرق نشده در شهرستان بویراحمد

نوع مقاله : مقاله پژوهشی

نویسندگان
1 استادیار، بخش تحقیقات جنگل‌ها، مراتع و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کهگیلویه و بویراحمد، سازمان تحقیقات، آموزش و ترویج کشاورزی، یاسوج، ایران.
2 استادیار، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران.
3 استاد، بخش تحقیقات جنگل، مؤسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران.
10.22034/ijf.2025.511864.2048
چکیده
امروزه توصیف کمی ساختار جنگل به عنوان یکی از مناسب‌ترین ابزار در مدیریت نوین جنگل درنظر گرفته می­شود. بنابراین برای مدیریت صحیح اکوسیستم­های جنگلی، داشتن اطلاعات کافی در رابطه با ساختار گونه‌های درختی ضروری است. این پژوهش در چارچوب طرح جامع سنجش و پایش جنگل‌های زاگرس که با روش پایش مکان‌محور (Place-base monitoring) طراحی شده است، به ارزیابی ساختار دو توده سرآب­تاوه (Sarabtaveh) در دامنه شمالی و پریکدان (Parikadan) در دامنه جنوبی در جنگل‌های شهرستان بویراحمد از استان کهگیلویه و بویراحمد می‌پردازد. در هریک از رویشگاه‌ها، قطعه‌نمونه یک‌هکتاری مربعی‌شکل به‌صورت تصادفی پیاده و متغیرهای کمی پایه‌های درختی اندازه‌گیری شد. براساس نتایج، در هر دو رویشگاه فرم غالب درختان توده، جست­گروه یا شاخه‌زاد بودند. الگوی پراکنش مکانی برای گونه غالب در هر دو منطقه یعنی بلوط ایرانی، کپه­ای به‌دست آمد. مقدار شاخص آمیختگی در توده پریکدان (23/0) و در توده سرآب­تاوه (14/0) محاسبه شد که بیانگر تنوع گونه­ای بیشتر در توده پریکدان نسبت به رویشگاه سرآب­تاوه می­باشد. البته شاخص آمیختگی هر دو رویشگاه کم بوده و با توجه به اینکه گونه بلوط تشکیل دهنده اصلی مناطق مورد بررسی می‌باشد، این مسئله قابل توجیه است. مقدار شاخص کلارک-ایوانز برای رویشگاه­های پریکدان و سرآب­تاوه به‌ترتیب 61/0، 13/1 به‌دست آمد. شاخص تمایز قطری برای رویشگاه­های پریکدان و سرآب­تاوه نیز به‌ترتیب 33/0، 32/0 بدست آمد. که نشان دهنده‌ی عدم اختلاف بین درختان از نظر متوسط قطر برابر سینه و همچنین همگن بودن درختان از نظر قطری می­باشد. اندازه­گیری و محاسبه شاخص زاویه یکنواخت، شاخص­های چیرگی قطر، سطح تاج پوشش، شاخص فاصله همسایگی، شاخص تنوع ساختاری و غیره از دیگر نتایج تحقیق پیش­رو می باشد. نتایج حاصل از این شاخص‌ها مبنایی برای مقایسه با سایر جنگل‌های مشابه و تعیین میزان انحرافات ناشی از فرآیندهای طبیعی و دخالت‌های انسانی خواهد بود. این مقایسه به تدوین یک الگوی مدیریت و شیوه جنگل‌شناسی مناسب در جنگل‌های منطقه کمک می‌کند.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Structure analysis of non-protected forest stands in Boyer-Ahmad County

نویسندگان English

Yousef Askari 1
Sayed Kazem Bordbar 2
Mehdi Pourhashemi 3
1 Assistant Prof., Research Division of Forest, rangeland and watershed, Kohgiluyeh and Boyerahmad Agriculture and Natural Resources Research and Education Center, AREEO, Yasouj, I. R. Iran
2 2ssistant Prof., Research Division of Natural Resources, Fars Agriculture and Natural Resources Research and Education Center, AREEO, Shiraz, I. R. Iran
3 Prof., Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, I. R. Iran
چکیده English

Quantitative descriptions of forest structure are recognized as one of the most effective tools in modern forest management. As such, obtaining accurate and comprehensive information about the structure of tree species is crucial for the sustainable management of forest ecosystems. This study, conducted as part of a comprehensive monitoring plan for the Zagros forests using place-based monitoring, evaluates the structure of two forest stands: Sarabtaveh on the northern slope and Parikadan on the southern slope in the forests of Boyer-Ahmad County, Kohgiluyeh and Boyer-Ahmad Province. In each stand, a one-hectare square sample plot was randomly established, and quantitative variables related to tree stems were measured. The findings revealed that the dominant tree form in both stands was coppice or branch-derived. The spatial distribution pattern of the dominant species, Persian oak, was clumped in both regions. The mingling index was calculated as 0.23 for Parikadan and 0.14 for Sarabtaveh, indicating higher species diversity in Parikadan compared to Sarabtaveh. However, the mingling index for both regions (study areas) was relatively low, which aligns with the fact that Persian oak is the predominant species in the studied areas. The Clark-Evans index was 0.61 for Parikadan and 1.13 for Sarabtaveh. The diameter differentiation index was 0.33 for Parikadan and 0.32 for Sarabtaveh, suggesting no significant difference in the average diameter at breast height (DBH) and highlighting the homogeneity of trees in terms of diameter. Additional measurements and calculations included the uniform angle index, diameter dominance indices, canopy cover, neighborhood distance index, and structural diversity index, among others. The results of these indices provide a valuable foundation for comparing the studied forests with other similar ecosystems and identifying deviations caused by natural processes and human activities. Such comparisons will contribute to the development of effective management models and appropriate forestry methods tailored to the region's forests.

کلیدواژه‌ها English

Forestry
Mingling
Oak
Parikadan
Uniform Angle
Aguirre, O., Hui, G., Gadow, K.V., & Jimenez, J. (2003). An analysis of forest structure using neighborhood-based variables. Forest Ecology and Management, 183, 137-145. http://dx.doi.org/10.1016/S0378-1127(03)00102-6
Alijani, V., Feghhi, J., & Marvi Mohadjer, M.R. (2012). Investigation on the beech and oak spatial structure in a mixed forest (Case study: Gorazbon district, Kheirud forest). Wood and Forest Science and Technology, 19(3), 175-188. (In Persian)
Askari, Y., Iranmanesh, Y., & Pourhashemi, M. (2024). Monitoring some of soil characteristics in the Vezg and Toutnadeh forest stands in Kohgiluyeh and Boyer-Ahmad province. Journal of Forest and Wood Products, 77(2), 173-185. 10.22059/JFWP.2024.374109.1287. (In Persian)
Basiri, R., Sohrabi, H., & Mozayen, M. (2006). A Statistical Analysis of the Spatial Pattern of Trees Species in Ghamisheleh Marivan Region, Iran. Journal of the Iranian Natural Research, 59(3), 579-588. (In Persian)
Corral, J.J., Wehenkel, C., Castellanos, H.A.B., Vargas-Larreta, B., & Dingoes, U. (2010). A permutation test of spatial randomness: application to nearest neighbor indices in forest stands. Journal of Forest Research, 15, 218-225. http://dx.doi.org/10.1007/s10310-010-0181-1
Erfani Fard, Y., Feghhi, J., Zobeiri, M., & Namiranian, M. (2008). Investigation on the spatial pattern of trees in Zagros forests. Journal of the Iranian Natural Research, 60(4), 1319-1328. (In Persian)
Fangliang, H., Legendre, P., & LaFrankie, J.V. (1997). Distribution patterns of tree species in a Malaysian tropical rain forest. Journal of Vegetation Science, 8(1), 105-114. https://doi.org/10.2307/3237248
Farhadi, P., Soosani, J., Erfanifard, S.Y., & Akhtari, M.H. (2019). Analysis of different type’s structure in Nave Asalem-Gilan forests by using nearest neighbor indices. Iranian Biology, 32(1), 167-182. https://dor.isc.ac/dor/20.1001.1.23832592.1398.32.1.6.9. (In Persian)
Farhadi, P., Soosani, J., & Erfanifard, S.Y. (2017). Evaluation level of tree diversity in the Hyrcanian forests using complex structural diversity index (Case study: beech-hornbeam type, Nav-e Asalem, Gilan). Iranian journal of forest and poplar research, 25(3), 495-505. https://doi.org/10.22092/ijfpr.2017.112883. (In Persian)
Fujimori, T. (2001). Ecological & Silvicultural Strategies for Sustainable Forest Management. Elsevier, 414 pp.
Gadow, K.V., Zhang, C.Y., Wehenkel, C., Pommerening, A., Corral-Rivas, J., Korol, M., Myklush, S., Hui, G.Y., Kiviste, A., & Zhao, X.H. (2012). Forest structure and diversity. In Continuous cover forestry, Springer, Dordrechtm, 29-83p.
Graz, P.F. (2004). The behavior of the species mingling index MS in relation to species dominance and dispersion. European Journal of Forest Research, 123, 87-92. http://dx.doi.org/10.1007/s10342-004-0016-8
Haidari, M., Teimouri, M., Pourhashemi, M., & Hedayatepour, M.K. (2022). The effect of forest structure on some physical and chemical soil properties in the forests stands of Kurdistan province. Forest and Wood Products, 74(4), 469-483. https://doi.org/10.22059/jfwp.2021.329153.1183. (In Persian)
Henareh, J., Bordbar, S.K., Pourhashemi, M., & Ghasempour, S. (2024). Investigating the structure of degraded oak forest stands in Northern Zagros Forests (Piranshahr and Sardasht forests). Forest Research and Development, 9(4), 535-552. https://doi.org/10.30466/jfrd.2023.54794.1678. (In Persian)
Henareh, J., Iranmanesh, Y., Pourhashemi, M., & Ghasempour, S. (2024). Comparison of the effect of two different oak (Quercus infectoria Oliv.) stands on carbon stocks of above ground, soil and litter in the forests of West Azerbaijan (case study: Piranshahr and Sardasht). Iranian Journal of Forest, 16(3), 371-385. https://doi.org/10.22034/ijf.2024.426432.1955. (In Persian)
Hosseinzadeh, J., Namiranian, M., Marvi Mohajer, M.R., & Zahedi Amiri, Gh. (2004). Structure of less degraded oak forests in Ilam province. Iranian Journal of Natural Resource, 57(1), 75-90. (In Persian)
Kakavand, M., Marvi Mohadjer, M.R., Sagheb Talebi, KH., & Sefidi, K. (2015). Structure and composition of oriental beech stands in the middle stage of ecological succession in the hyrcanain region. Journal of Forest and Wood Products, 64(1), 31-45. https://doi.org/10.22059/jfwp.2015.53975. (In Persian)
Knit, V., Lust, N. Ferris, R., & Althorn, A.F.M. (2000). Quantification of forest stand structure applied to scots pine (Pinups Silvestre's L.) forests. Investigation Agrarian: Sistema's y Recourses Forestalls, 1, 147-163.
Knit, V., Robert, D.W., & Noel, L. (2004). Evaluation of sampling methods for estimation of structural indices in forest stands. Ecological Modeling, 180: 461-476. https://doi.org/10.1016/j.ecolmodel.2004.04.032
Kunstler, G., Curt, T., & Lepart, J. (2004). Spatialpattern of beech (Fagus sylvatica L.) and oak (Quercus pubescens Mill.) seedling in naturalpine (Pinus sylvestris L.) woodland. European Journal of Forest Research, 123, 331-337.
Milorad, D., & Damjan, P. (2004). Assortment structure in beech coppice stands in Boljevac region. Glasnik Sumarskog fakulteta, 89, 91-102. http://dx.doi.org/10.1007/s10342-004-0048-0
Moradi, M., Ghahramani, L., & Valipour, A. (2021). Monitoring changes in the structural characteristics of pollarded oak stands (Case study: Kocher forest in Kurdistan province, Iran). Iranian Journal of Forest and Poplar Research, 30(1), 83-102. https://doi.org/10.22092/ijfpr.2022.358078.2046. (In Persian)
Mou, P., Fahey, T.J., & Hughes, J.W. (1993). Effect of soil disturbance on vegetation recovery and nutrient accumulation following whole-tree harvest of a northern hardwood ecosystem. Journal of Applied Ecology, 30(4), 661-675. http://dx.doi.org/10.2307/2404245
Mouro, S.M., García, L.V., Marañón, T., & Freitas, H. (2007). Recruitment patterns in aMediterranean oak forest: A case study showingthe importance of the spatial component. Forest Science, 53 (6), 645-652. http://dx.doi.org/10.1093/forestscience/53.6.645
‌Nazarpour Fard, K., & Pourbabaei, H. (2019). Studying the spatial distribution pattern using distance and quadratic methods in the zagros recreational areas. Journal of Environmental Research and Technology, 4(6), 1-13. https://doi.org/10.29252/.4.6.31. (In Persian)
Pastorella, F., & Paletto, A. (2013). Stand structure indices as tools to support forest management: an application in Trentino forests (Italy). Journal of Forest Science, 59(4), 159-168. http://dx.doi.org/10.17221/75/2012-JFS
Pilehvar, B., Mirzadi, Z., Alijani, V., & Jafari Sarabi, H. (2015). Investigation of Hawthorn and Maple's Stands Structures of Zagros Forest Using Nearest Neighbors Indices. Journal of Zagros Forests Researche, 1(2), 1-14. http://irdoi.ir/853-084-334-944. (In Persian)
Pommerening, A. (1997). Eine Analyse neuer Ansätze zur Bestandesinventur in strukturreichen Waldern [An analysis of new approaches towards stand inventory in structure-rich forests]. Ph.D. thesis, Faculty of Forestry and Forest Ecology, University of Gottingen, Cuvillier Verlag Gottingen, 187p (In Germany).
Pommerening, A. (2002). Approaches to quantifying forest structures. Forestry, 3, 305-324.
Pommerening, A. (2006). Evaluating structural indices by reversing forest structural analysis. Forest Ecology and Management, 224, 266- 277. https://doi.org/10.1016/j.foreco.2005.12.039
Pommerening, A., & Stoyan, D. (2006). Edge correction needs in estimating indices of spatial forest structure. Canadian Journal of Forest Research, 36, 1723-1739. https://doi.org/10.1139/X06-060
Pourhashemi, M., Zandebasiri, M., & Panahi, P. (2015). Structural characteristics of oak coppice stands of Marivan Forests. Journal of Plant Researches (Iranian Journal of Biology), 27(5), 766-776. https://dor.isc.ac/dor/20.1001.1.23832592.1393.27.5.2.8. (In Persian)
Popovic, A., Pantic, D., Medarevic, M., Sljukic, B., & Obradovic, S. (2021). Impact of Mixing on the Structural Diversity of Serbian Spruce and Macedonian Pine Endemic to Relict Forest Communities in the Balkan Peninsula. Forests, 12, 1-18. http://dx.doi.org/10.3390/f12081095
Rahimi, H., Bordbar, S. K., Pourhashemi, M., khanhasani, M., safari, H., & Jalilian, N. (2023). Structure analysis of oak forest stands using neighborhood-based indices (case study: Chaharzebar and Barzeh forests, Kermanshah Province). Forest Research and Development, 9 (1), 115-127. https://doi.org/10.30466/jfrd.2022.54256.1625. (In Persian)
‌Ruprecht, H., Dhar, A., Aigner, B., Oitzinger, G., Raphael, K., & Vacik, H. (2010). Structural diversity of English yew (Taxus baccata L.) populations. European Journal of Forest Research, 129, 189-198. http://dx.doi.org/10.1007/s10342-009-0312-4
Schultz, J. (2002). The Ecozones of the world. 3th edition, Springer, 252p.
Schulze, E.D., Beck, E., & Müller-Hohenstein, K. (2005). Plant Ecology. Springer, 716 pp.
‌Sefidi, K., Coopenheaver, C.A., Keivan Behjou, F. & Kakavand, M. (2014). Structural diversity within mature forests in Northern Iran: a case study from a relic population of Persian ironwood (Parrotia persica C. A. Mey.). Forest Science, 16(2), 258-265. http://dx.doi.org/10.5849/forsci.13-096. (In Persian)
Sefidi, K., Firouzi, Y., Sharari, M., Behjou, F.K., & Rostamikia, Y. (2018). Quantification of spatial structure of juniper stands in Kandaragh region. Iranian Journal of Forest, 10(1), 207-220. https://doi.org/10.30466/jfrd.2022.54256.1625. (In Persian)
Sefidi, K., Heidari, Z., Ashraf Soltani, A., & Maleknia, R. (2020). ‌Structural characteristics of oak communities (Quercus infectoria Oliv.) in Shineh Galayie Forest, Lorestan province. Journal of Forest Research and Development, 6(1), 153-164. https://doi.org/10.30466/jfrd.2020.120854. (In Persian)
Szmyt, J. (2014). Spatial statistics in ecological analysis: from indices to functions. Silva Fennica, 38, 1-31. https://doi.org/10.14214/sf.1008
Szmyt, J., & Dobrowolska, D. (2016). Spatial diversity of forest regeneration after catastrophic wind in northeastern Poland. Forest, 9, 414-421. https://doi.org/10.3832/ifor1699-008
Wang, H., Zhang, G., Hui, G., Li, Y., Hu, Y., & Zhao, Zh. (2016). The influence of sampling unit size and spatial arrangement pattern on neighborhood-based spatial structure analyses of forest stands. Forest Systems, 25(1), 1-9. https://doi.org/10.5424/fs/2016251-07968
Zafarian Rigaki, I., Soltani, A., & Jafari, A. (2023). The effect of some anthropogenic disturbances on the structure of oak forests in the Central Zagros. Iranian Journal of Forest, 15(3), 361-376. https://doi.org/10.22034/ijf.2023.360913.1890. (In Persian)
 
دوره 17، شماره 4 - شماره پیاپی 4
شماره انگلیسی
زمستان 1404
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