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ارزیابی توان رویش ارتفاعی توده‌های صنوبر دلتوئیدس (Populus deltoides Marsh.) با استفاده از مدل جمعی تعمیم‌یافته (مطالعه موردی: صنوبرکاری‌های سنواتی منطقه گیسوم و هفت‌دغنان) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 17، دوره 24، شماره 2 - شماره پیاپی 64، تیر 1395، صفحه 378-366 اصل مقاله (463.55 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2016.106997 | ||
| نویسندگان | ||
| سمیه سلگی* 1؛ علی صالحی2؛ سیدجلیل علوی3؛ حسن پوربابائی4؛ محمود شعبانپور5 | ||
| 1دانشجوی دکتری جنگل‌داری، دانشکده منابع طبیعی، دانشگاه گیلان | ||
| 2دانشیار، گروه جنگل‌داری، دانشکده منابع طبیعی، دانشگاه گیلان | ||
| 3استادیار، گروه جنگل‌داری، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس | ||
| 4استاد، گروه جنگل‌داری، دانشکده منابع طبیعی، دانشگاه گیلان | ||
| 5دانشیار، گروه خاکشناسی، دانشکده کشاورزی، دانشگاه گیلان | ||
| چکیده | ||
| توان تولید یکی از شاخص‌های کلیدی خدمات اکوسیستم جنگل است و معیاری مهم برای پیش‌بینی میزان تولید، بهره‌برداری مجاز سالانه و همچنین میزان رویش رویشگاه است. در پژوهش پیش‌رو از معیار ارتفاع غالب که معیار مطمئنی برای ارزیابی کیفیت توده است، استفاده شد. برای این منظور در توده‌های صنوبر دلتوئیدس (Populus deltoides Marsh.) به روش انتخابی 52 قطعه‌نمونه مربعی به مساحت 400 متر مربع پیاده شد و در هریک ارتفاع و قطر درختان صنوبر و ارتفاع از سطح دریا ثبت شد. همچنین از عمق صفر تا 20 و 20 تا 40 سانتی‌متری، نمونه خاک برداشت شد و متغیرهای مورد نظر اندازه‌گیری شدند. ارزیابی توان تولید توده‌های صنوبر با استفاده از مدل جمعی تعمیم‌یافته و معیار اطلاعاتی آکائیک در بسته GRASP در نرم‌افزار آماری R نشان داد که ارتفاع از سطح دریا و متغیرهای فسفر، درصد رطوبت اشباع، کربن آلی، درصد سنگریزه و نیتروژن در عمق 20 تا 40 سانتی‌متری و همچنین کلسیم، جرم مخصوص ظاهری خاک و pH در عمق صفر تا 20 سانتی‌متری، بیشتر از 90 درصد تغییرات توان تولید را توجیه می‌کنند. به‌کارگیری معیار اهمیت نسبی نشان داد که ارتفاع از سطح دریا، فسفر در عمق 20 تا 40 سانتی‌متری و جرم مخصوص ظاهری خاک در عمق صفر تا 20 سانتی‌متری، به‌طور انفرادی و ارتفاع از سطح دریا، کربن آلی در عمق 20 تا 40 سانتی‌متری و جرم مخصوص ظاهری خاک در عمق صفر تا 20 سانتی‌متری، در ترکیب با بقیه متغیرها مهم‌ترین عامل‌ها در تغییرات توان تولید توده صنوبر بوده‌اند. | ||
| کلیدواژه‌ها | ||
| ارتفاع غالب؛ اهمیت نسبی؛ توان تولید توده؛ خصوصیات خاک؛ مدل جمعی تعمیم‌یافته | ||
| عنوان مقاله [English] | ||
| Evaluation of poplar (Populus deltoids Marsh.) stands height growth using a Generalized Additive Model (Case study: Guisoum & Haft-Daghanan region, Guilan province) | ||
| نویسندگان [English] | ||
| Somayyeh Solgi1؛ Ali Salehi2؛ Seyyed Jalil Alavi3؛ Hasan Pourbabaei4؛ Mahmoud Shabanpour5 | ||
| 1Ph.D. Student Forestry, Department of Forestry, Faculty of Natural Resources, University of Guilan | ||
| 2Associate Prof., Department of Forestry, Faculty of Natural Resources, University of Guilan | ||
| 3Assistant Prof., Department of Forestry, Faculty of Natural Resources and Marine Sciences, University of Tarbiat Modares | ||
| 4Prof., Department of Forestry, Faculty of Natural Resources, University of Guilan | ||
| 5Associate Prof., Department of Soil Sciences, Faculty of Agriculture, University of Guilan | ||
| چکیده [English] | ||
| Site productivity is a key indicator of forest ecosystem, and is therefore an important criterion for forest managers to estimate the yield, annual exploitation and site growth. In this study, dominant height index was used as the most reliable criterion for evaluating site productivity of even-aged stands. A selective sampling method was used to locate 52 square sample plots of 0.04 ha each in poplar stands. The height and diameter of Populus deltoides Marsh. trees and altitude of each plot was recorded. Also, in each plot, soil samples from 0-20 cm and 20-40 cm depths were taken for analyzing several soil properties. Evaluation of stands productivity by using generalized additive models and AIC showed that altitude, P, saturation, organic carbon , gravel, N from 20-40 cm depth as well as Ca, bulk density and pH from depth 0-20 cm were the significant variables explaining the 90% of variability in productivity of P. deltoides. Using the relative importance criterion showed that altitude, P from 20-40 cm depth and bulk density from 0-20 cm depth were associated with dominant roles, yet the overall contribution of altitude, organic carbon from 20-40 cm depth, bulk density from 0-20 cm depth, together with other variables, were the most significant drivers of poplar site productivity. | ||
| کلیدواژه‌ها [English] | ||
| Dominant height, relative importance, site productivity, soil chemical and physical properties, Generalized Additive Model | ||
| مراجع | ||
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- Aertsen, W., Kint, V., De Vos, B., Deckers, J., Van Orshoven, J. and Muys, B., 2011. Predicting forest site productivity in temperate lowland from forest floor, soil and litter-fall characteristics using boosted regression trees. Plant and Soil, 354(1-2): 157-172. - Aertsen, W., Kint, V., Van Orshoven, J., Ozkan, K., and Muys, B., 2010. Comparison and ranking of different modelling techniques for prediction of site index in Mediterranean mountain forests. Ecological Modeling, 221(8): 1119-1130. - Aertsen, W., Kint, V., Von Wilpert, K., Zirlewagen, D., Muys, B. and Van Orshoven, J., 2012. Comparison of location-based, attribute-based and hybrid regionalization techniques for mapping forest site productivity. Forestry, 85(4): 539-550. - Akaike, H., 1974. A new look at the statistical model identification. IEEE Transactions on Automatic Control, 19(6): 716-723. - Anonymous, 1990. Site Index Curves for the Asalem beech forest in the Caspian Region of Iran. Published by Research Institute of Forests and Rangelands, Tehran, 40p (In Persian). - Bakker, M.R., Nys, C. and Picard, J.F., 1999. The effects of liming and gypsum applications on a sessile oak (Quercus petraea (M.) Liebl.) stand at La Croix-Scaille (French Ardennes) I. Site characteristics, soil chemistry and aerial biomass”. Plant Soil, 206: 99-108. - Bergès, L., Chevalier, R., Dumas, Y., Franc, A. and Gilbert, J.M., 2005. Sessile oak (Quercus petraea Liebl.) site index variations in relation to climate, topography and soil in even-aged high-forest stand in northern France. Annals of Forest Science, 62(5): 391-402. - Birkeland, P., 1999. Soils and Geomorphology. Oxford University Press, Oxford, United Kingdom, 448p. - Bravo, F., Lucà, M., Mercurio, R., Sidari, M. and Muscolo, A., 2011. Soil and forest productivity: a case study from Stone pine (Pinus pinea L.) stands in Calabria (southern Italy). IForest, 4: 25-30. - Bravo-Oviedo, A. and Montero, G., 2005. Site index in relation to edaphic variables in stone pine (Pinus pinea L.) stands in south west Spain. Annals of Forest Science, 62(1): 61-72. - Carmean, W., 1975. Forest site quality evaluation in the United States. Advances in Agronomy, 27: 209-269. - Faraj Pour, A., Kahneh, A., Lashkarbolouki, A. and Ghanbar Pour, R., 2010. Study the Effects of Habitat Characteristics (Location Indicator) on the Performance of Poplar Wood in the West of Guilan. Published by Islamic Azad university, 53p (In Persian). - Fontes, L., Tome, M., Thompson, F., Yeomans, A., Luis, J.S. and Savill, P., 2003. Modelling the Douglas‐fir (Pseudotsuga menziesii (Mirb.) Franco) site index from site factors in Portugal. Forestry, 76(5): 491-507. - Greacen, E.L. and Sands, R., 1980. Compaction of forest soils, a review. Soil Research, 18(2): 163-189. - Guisan, A., Edwards, J. and Hastie, T., 2002. Generalized linear and generalized additive models in studies of species distributions: setting the scene. Ecological Modeling, 157(2): 89-100. - Hagglund, B., 1981. Evaluation of forest site productivity. Review article. Forest Abstracts, 42(11): 515-527. - Hastie, T. and Tibshirani, R., 1990. Non-parametric logistic and proportional odds regression. Applied Statistics, 36(3): 260-276. - Herrera B.J., Campos, J., Finegan, B. and Alvarado, A., 1999. Factors affecting site productivity of a Costa Rican secondary rain forest in relation to Vochysia ferruginea a commercially valuable canopy tree species. Forest Ecology and Management, 118(1): 73-81. - Hossini, S.M., Sagheb Talebi, Kh., Akbar Niya, M. and Makhdom, M., 2000. Methods for evaluation of ecological forest. Journal of Environmental Studies, 25: 59-66 (In Persian). - Huang, Sh. and Titus S.J., 1993. An index of site productivity for uneven-aged or mixed-species stands. Canadian Journal of Forest Research, 23(3): 558-562. - Jafari Haghighi, M., 2010. Methods of Soil Analysis. Published by Nedaye Zoha, Sari, 236p (In Persian). - Janssens, I.A. and Luyssaert, S., 2009. Nitrogen’s carbon bonus. Nature Geoscience. 2: 318-319. - Jones, A.T., 2005. Development of a forest site quality classification model for mine soils in the Appalachian Coalfield Region. The 22nd Meeting of American Society for Mining and Reclamation. 19-23 June 2009. - Juan Gabriel, A. and Daría, R., 2005. Ecoregional site index models for Pinus pinaster in Galicia (northwestern Spain). Annals of Forest Science, 62(2): 115-127. - Kabacoff, R., 2011. R in Action. Manning Publications, USA, 447p. - Lashkarbolouki, E., Modirrahmati, A.R., Kaneh, E. and Mosavi Koopar, S.A., 2011. Study on phonological and growth characteristics of different poplar clones (Populus euramericana (Dode) Guinier) in Guilan province. Journal of Plant Researches, 26(4): 526-536 (In Persian). - Monserud, R.A., Moody, U. and Breuer, D.W., 1990. A soil-site study for inland Douglas-fir. Canadian Journal of Forest Research, 20(6): 686-695. - Richter, D.D. and Markewitz, D., 1994. Soil chemical change during three decades in an old-field loblollypine (Pinus taeda L.) ecosystem. Ecology, 75: 1463-1473. - Salehi, A., Maleki, M., Shabanpour, M. and Basiri, R., 2012. Effect of soil physical properties and groundwater level on qualitative and quantitative characteristics of poplar plantations in west of Guilan province (case study: Guisum region). Iranian Journal of Forest and Poplar Research, 1(20): 38-49 (In Persian). - Salehi, M.H., Jozeini, F. and Mohammad Khani, A., 2008. The effect of topography on soil properties with a focus on yield and quality of almond in the Saman area, Shahrekord. Water. Soil and Plant of Agriculture, 2(8): 79-92 (In Persian). - Sayad, E. and Hossini, S.M., 2006. Compare the supply and return nutrients in pure and mixed plantations of Poplar and Alnus subcordata. Journal of Environmental Studies, 31(38): 93-102 (In Persian). - Schafer, G., 1989. Site indicator species for predicting productivity of pine plantations in the southern Cape. South African Forestry Journal, 148(1): 7-17. - Shahoei, S., 2006. The Nature and Properties of Soils. Published by University of Kurdistan, Sanandaj, 880p (In Persian). - Skovsgaard, J.P. and Vanclay, J.K., 2008. Forest site productivity: a review of the evolution of dendrometric concepts for even-aged stands. Forestry, 81: 12-31. - Tufekcloglu, A., Altun, L., Kalay, H.Z. and Yilmaz, M., 2005. Effects of some soil properties on the growth of hybrid poplar in the Terme- Golardi region of Turkey. Turkish Journal of Agriculture and Forestry, 29: 221-226. - Vanclay, J.K. and Henry, N.B., 1988. Assessing site productivity of indigenous cypress pine forest in southern Queensland. Commonwealth Forestry Review, 67(1): 53-64. - Vaziri Nasab, H., Salehi, M., Khoshkam, M. and Rafati, N., 2012. Application of the generalized additive model in determination of the retinopathy risk factors relation types for Tehran diabetic patients. Razi Medical Journal, 19(97): 1-9 (In Persian). - Zojaji Tehrani, H., Payam, H., Rashidi Haghi, R. Rabiee, S. and Jahangiri, R., 2011. Investigation on Populus deltoides on Guilan provinance (Case study: Haft Deghnan plantation). Journal of Biology Science, 5: 77-85 (In Persian). | ||
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