| تعداد نشریات | 285 |
| تعداد نشریات سازمان | 83 |
| تعداد شمارهها | 3,087 |
| تعداد مقالات | 34,477 |
| تعداد مشاهده مقاله | 49,207,177 |
| تعداد دریافت فایل اصل مقاله | 79,676,350 |
اثرپذیری ساختار و زیتوده جنگلهای ماسال استان گیلان از عامل حفاظت | ||
| تحقیقات حمایت و حفاظت جنگلها و مراتع ایران | ||
| مقاله 9، دوره 19، شماره 2 - شماره پیاپی 38، بهمن 1400، صفحه 326-338 اصل مقاله (1.18 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfrpr.2021.354340.1478 | ||
| نویسندگان | ||
| فرشته مرادیان فرد1؛ کامبیز طاهری آبکنار* 2؛ یعقوب ایرانمنش3؛ ابوذر حیدری صفری کوچی4 | ||
| 1دانشجوی دکترای علوم زیستی جنگل، دانشکده منابع طبیعی، دانشگاه گیلان، صومعهسرا، ایران | ||
| 2دانشیار، دانشکده منابع طبیعی، دانشگاه گیلان، صومعهسرا، ایران | ||
| 3استادیار پژوهش، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی چهارمحال و بختیاری، سازمان تحقیقات، آموزش و ترویج کشاورزی، شهرکرد، ایران | ||
| 4دانشآموخته دکتری، جنگلشناسی و اکولوژی جنگل، دانشکده منابع طبیعی، دانشگاه گیلان، صومعهسرا، ایران | ||
| چکیده | ||
| با ثبت جنگلهای هیرکانی در یونسکو و افزایش حساسیتهای محیطزیستی، این جنگلها در وضعیت حفاظتی قرار گرفتهاند. پژوهش پیشرو با هدف بررسی اثر حفاظت بر ساختار، زیتوده و پراکنش قطری جنگلهای راش آمیخته اسالم در استان گیلان انجام شد. دو پارسل حفاظتشده و حفاظتنشده در سری پنج حوزه 12 انتخاب، در هر منطقه 50 قطعهنمونه 10آری با روش تصادفی- منظم اجرا و قطر و ارتفاع تمام درختان در قطعات اندازهگیری شد. پس از محاسبه شاخصهای کمی متداول، زیتوده روی زمینی درختان در دو توده با استفاده از روابط آلومتریک برآورد شد. همچنین، پراکنش قطری درختان در دو منطقه با استفاده از هشت تابع توزیع احتمال مدلسازی شد. براساس نتایج، میانگین تعداد در هکتار، رویه زمینی و حجم درختان در توده حفاظتنشده به شکل معنیداری کمتر از توده حفاظتشده بود. زیتوده منطقه حفاظتنشده نیز 25/75 تن در هکتار کمتر از منطقه حفاظتشده بهدست آمد. از میان توابع توزیع مورد استفاده، توابع جانسون و بتا در توده حفاظتشده و جانسون و گاما در توده حفاظتنشده بهترین برازش را با پراکنش قطری درختان نشان دادند. نتایج این پژوهش نشان داد که حفاظت بر ساختار زیتوده و پراکنش قطری درختان مؤثر بوده و عدم حفاظت بیشترین اثر منفی را بر درختان کمقطر داشته است. | ||
| کلیدواژهها | ||
| پراکنش قطری؛ توابع توزیع؛ توده حفاظتشده؛ جنگلهای هیرکانی؛ روابط آلومتریک | ||
| عنوان مقاله [English] | ||
| Impactability of Structure, and Biomass of Masal Forests of Guilan Province from Conservation | ||
| نویسندگان [English] | ||
| fereshteh moradianfard1؛ kambiz taheri abkenar2؛ Yaghoub Iranmanesh3؛ abouzar heidari safari kouchi4 | ||
| 1Faculty of Natural Resources, University of Guilan, Sowme`eh Sara, Iran | ||
| 2Faculty of Natural Resources, University of Guilan, Sowme`eh Sara, Iran | ||
| 3Research Division of Natural Resources, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research Center, Agriculture Research, Education and Extension Organization (AREEO), Shahrekord, Iran | ||
| 4Faculty of Natural Resources, University of Guilan, Sowme`eh Sara, Iran | ||
| چکیده [English] | ||
| With the registration of Hyrcanian forests in UNESCO and increasing environmental sensitivities, these forests are in a state of conservation. The aim of current study is to investigate the effects of conservation on the structure, biomass and diameter distribution of mixed beech forests of Asalem of Guilan province. For this purpose, two protected and unprotected parcels were selected in a series five of watershed-12. In each area, 50 sample plots were accomplished by randomized systematic method and the diameter and height of all trees in the plots were measured. After calculating the common quantitative indicators, aboveground biomass of trees in the two stands was estimated using allometric equations. Then, the diameter distribution of trees in the two regions was modeled using eight probability distribution functions. Based on the results, the average number per hectare, basal area and volume of trees in non-conserved stands were calculated significantly less than the conserved stand. The biomass of the non-conserved area was 75.25 tons per hectare less than the conserved area. Among the distribution functions used, Johnson and beta functions in the conserved stand and Johnson and gamma in the non-conserved stand showed the best fit with the diameter distribution of the trees. The results of the this study showed that conservation had a significant effect on the biomass structure and diameter distribution of trees and lack of conservation had the greatest negative effect on low-diameter trees. | ||
| کلیدواژهها [English] | ||
| diameter distribution, distribution functions, conserved stand, Hyrcanian forest, allometric equations | ||
| مراجع | ||
|
-Abera, T.A., Heiskanen, J., Pellikka, P., Rautiainen, M. and Maeda, E.E., 2019. Clarifying the role of radiative mechanisms in the spatio-temporal changes of land surface temperature across the horn of Africa. Remote Sensing Enviroment, 221: 210-224.
-Alijani, V., Namiranian, M., Feghhi, J., Bozorg-Haddad, O. and Etemad, V., 2020. Investigation of Height-Diameter Models in Different Development Stages of Unmanaged Beech Forest (Case Study: Educational and research forest of Kheirud). Journal of Environmental Science and Technology, 21(12): 125-134.
-Amanzadeh, B., Sagheb-Talebi, K., Fadaei Khoshkebijari, F., Khanjani Shiraz, B. and Hemmati, A., 2011. Evaluation of different statistical distributions for estimation of diameter distribution within forest development stages in Shafaroud beech stands. Iranian Journal of Forest and Poplar Research, 19(2): 267-254.
-Amini, M., Namiranian, M., Sagheb Talebi Kh., Parsapajouh, D. and Amini, R., 2007. Trunk morphology of beech trees (Fagus orientalis Lipsky) on biometrical and silvicultural criteria (Case study: Haftkhal forest, Sari, north of Iran). Iranian journal Natural Resources, 60(3): 843-858.
-Angelstam, P., Naumov, V., Elbakidze, M., Manton, M., Priednieks, J. and Rendenieks, Z., 2018. Wood production and biodiversity conservation are rival forestry objectives in Europe’s Baltic Sea Region. Ecosphere, 9: 1-26.
-Bouriaud, O., Don, A., Janssens, I.A., Marin, G. and Schulze, ED., 2019. Effects of forest management on biomass stocks in Romanian beech forests. Forest Ecosystems, 6: 19.
-Bragg. D.C., 2011. Modeling loblolly pine aboveground live biomass in a mature pine-hardwood stand: A cautionary tale. Journal of the Arkansas Academy of Science, 65: 31-38.
-Chen, Y., Wu, B. and Min, Zh., 2019. Stand diameter distribution modeling and prediction based on maximum entropy principle. Forests, 10(859): 1-18.
-Ebrahimi, S.S. and Pourbabaei, H., 2013. Effect of conservation on spatial pattern of dominant trees in beech (Fagus Orientalis Lipsky) communities, (Case study: Masal, Guilan). Iranian Journal of Apply Ecology, 2(4): 13-24.
-Fallahchai, M.M., Kalantari Cherodeh, KH. and Payam, H., 2011. Comparison of quantitative characteristics of natural forest stands in conserved and non-conserved areas (Case study in the forests of Nav-Asalem). Biological Science, 5(4): 113-121.
-Farhadi, P. and Soosani, J., 2019. Analysis of different type’s structure in Nave Asalem-Gilan forests by using nearest neighbor indices. Iranian Journal of Plant Research, 32(1): 63-74.
-Ghanbari, S., Moradi, G. and Nasiri, V., 2018. Quantitative characteristics and structure of tree species in two different conservation situations in Arasbaran forests. Iranian Journal of Forest and Poplar Research, 32(3): 355-367.
-Heidari Safari Kouchi, A., Taheri Abkenar, K., Moradian Fard, F. and Iranmanesh, Y., 2020. Height and crown area distribution of Cionura erecta shrub lands in Chaharmahal and Bakhtiari province, using probability distribution functions. Iranian Journal of Applied Ecology, 9(2): 61-71.
-Iranmanesh, Y., Sohrabi, H., Sagheb-Talebi, KH., Hosseini, S.M. and Heidari Safari Kouchi, A., 2019. Biomass, Biomass Expansion Factor (BEF) and carbon stock for brant's oak (Quercus brantii Lindl.) forests in west-Iran. Annals of Silvicultural Research, 43(1): 15-22.
-Johnson, E.W., 2010. Forest sampling desk reference. CRC Press LLC, Florida, 985p.
-Kargar, M. and Sohrabi, H., 2019. Using canopy height model derived from UAV images to tree height estimation in Sisangan forest. Journal of RS and GIS for Natural Resources, 10(3): 106-119.
-Kuusinen, N., Stenberg, P., Korhonen, L., Rautiainen, M. and Tomppo, E., 2016. Structural factors driving boreal forest albedo in Finland. Remote Sensing in Environment, 175: 43-51.
-Mateus, A. and Tome, M., 2011. Modeling the diameter distribution of eucalyptus plantations with Johnson’s SB probability density function: parameters recovery from a compatible system of equations to predict stand variables. Annals of Forest Science, 68(2): 325-335.
-Mirakhorlou, K. and Akhavan, R., 2017. Area changes of Hyrcanian forests during 2004 to 2016. Iran Nature, 2(3): 40-45.
-Naqinezhad, A., Hosseini, S., Rajamand, M. and Saeidi Mehrvarz, S., 2010. A floristic study on Mazibon and Sibon protected forests, Ramsar, across the altitudinal gradient (300-2300 m). Taxonomy and Biosystematics, 2(5): 93-114.
-Negahdar Saber, S., Taheri Abkenar, K., Pourbabaei, H. and Sagheb Talebi, Kh., 2017. Effects of protection on forest structure in protected and unprotected forest areas (Case study: Deh-Kohneh wild pear reserve). Plant Ecosystem Conservation, 4(9):1-16.
-Nüchel, J., Bøcher, P.K. and Svenning, J.C.H., 2020. Topographic slope steepness and anthropogenic pressure interact to shape the distribution of tree cover in China. Applied Geography, 103: 40-55.
-Ochal, W., 2013. The aboveground biomass of tree in young black alder (Alnus glutinosa (L.) Gaerin.) stands. Acta Agraria et Silvestria, 51: 75-89.
-Oliveira, N., Rodríguez-Soalleiro, R., Pérez-Cruzado, C., Cañellas, I., Sixto H. and Ceulemans, R., 2018. Above- and below-ground carbon accumulation and biomass allocation in poplar short rotation plantations under Mediterranean conditions. Forest Ecology and Management, 428: 57-65.
-Rezaei Sangdehi, S., Moslemi, S. and Tafazoli, M., 2016. Comparing the forest quantitative and qualitative characteristics following a period of forestry plan implementation (Case study: Watershed 65, Jojadeh zone of Farim Company, Mazandaran province). Iranian Journal of Forest and Poplar Research, 24(4): 723-713.
-Rezvani, M. and hashemzadeh, F., 2013. Investigating the effective factors on forest degradation and impact of removing livestock from district 14 of the northern forests of Iran: an environmental and economic perspective (Fuman). Journal of Wood and Forest Science and Technology, 20(3): 125-138.
-Sedighi, F., Taheri Abkenar, K. and Heidari Safari Kouchi, A., 2021. Analyzing the diameter distribution of Juniperus excelsa M. Bieb stands of northeast Iran, using probability distribution functions. Ecopersia, 9(2): 69-77.
-Shahrokhzadeh, Y., 2015. Estimation of annual aboveground biomass and carbon increment of Fagus orientalis, Quercus castaneifolia and Carpinus betulus at tree and stand level using dendrochronology. M.Sc. Thesis, Department of Forestry, Tarbiat Modares University, Tehran, 70p.
-Svátek, M. and Matula, R., 2015. Fine-scale spatial patterns in oak sprouting and mortality in a newly restored coppice. Forest Ecology and Management, 348: 117-123.
-Vahedi, A., 2016. Simulating commercial biomass in the Hyrcanian mixed-beech stands. Iranian Journal of Forest and Poplar Research, 24(3): 462-451.
-Viellard, G., 2000. Conseil Regional de Franche-Comte, Typologie des Peuplements Feuillus Irreguliers de Franche-Comte. SFFC, 32p.
-Wang M. and Rennolls, K., 2005. Tree diameter distribution modelling: introducing the logit-logistic distribution. Canadian Journal of Forest Research, 35: 1305-1313.
-Zobeiri, M. 2002. Forest biometry. Tehran University Press, Tehran, 411p. | ||
|
آمار تعداد مشاهده مقاله: 1,303 تعداد دریافت فایل اصل مقاله: 381 |
||