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تأثیر عوامل فیزیوگرافی و خاک بر وضعیت تجدید حیات ارس در دامنههای هزار مسجد خراسان (منطقه لاین) ایران | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 9، دوره 20، شماره 3 - شماره پیاپی 49، مهر 1391، صفحه 459-444 اصل مقاله (327.3 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2012.107450 | ||
| نویسندگان | ||
| تکتم مومنیمقدم1؛ مسلم اکبرینیا* 2؛ خسرو ثاقبطالبی3؛ رضا اخوان4؛ سیدمحسن حسینی2 | ||
| 1دانشجوی دکتری، گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس | ||
| 2دانشیار، گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس | ||
| 3دانشیار پژوهش، مؤسسه تحقیقات جنگلها و مراتع کشور | ||
| 4استادیار پژوهش، مؤسسه تحقیقات جنگلها و مراتع کشور | ||
| چکیده | ||
| بهمنظور بررسی اثر عوامل محیطی شیب، جهت دامنه و ارتفاع از سطح دریا بر روی وضعیت کمی و کیفی زادآوری تودههای جنگلی ارس در دامنههای هزار مسجد واقع در شمال خراسان رضوی، نقشههای شیب، جهت، ارتفاع از سطح دریا و شکل کلی زمین (Landform) تهیه و پس از تلفیق نقشههای فوق، واحدهای همگن مشخص شد. از روش استراتیفیکاسیون (مونهبندی) برای نمونهبرداری استفاده شد و تیپبندی با استفاده از روش ترکیب نقشهها انجام شد. سپس نسبت به برداشت سه قطعه نمونه دایرهای شکل به مساحت 1000 مترمربع در هر واحد همگن اقدام شد. در هر قطعه نمونه یک نمونه از خاک سطحی برداشت و پس از اندازهگیری خصوصیات فیزیکی و شیمیایی خاک نتایج با استفاده از آزمون چند متغیره PCA تجزیه و تحلیل شد. نتایج نشان داد که ارتفاع از سطح دریا بر مشخصههای تعداد نهال در قطعه نمونه، قطر یقه، ارتفاع و درصد نهالهای شاداب تأثیر دارد. عامل شیب بر مشخصههای تعداد نهال در قطعه نمونه تأثیرگذار است. جهت جغرافیایی تنها بر درصد نهالهای با شادابی متوسط مؤثر است و شکل کلی زمین با هیچ یک از مشخصههای مورد بررسی ارتباط معنیداری ندارد. براساس نتایج آزمون PCA میتوان گفت که آهک، شوری، رس و فسفر بیشترین تأثیر را بر زادآوری ارس دارند. | ||
| کلیدواژهها | ||
| ارتفاع از سطح دریا؛ شیب؛ جهت دامنه؛ شکل زمین؛ زادآوری ارس؛ خراسان | ||
| عنوان مقاله [English] | ||
| Impact of some environmental factors on regeneration status of Juniperus excelsa sub sp. polycarpus in Hezar Masjed Mountains (Layen Region) of Iran | ||
| نویسندگان [English] | ||
| Toktam Momeni Moghaddam1؛ Moslem Akbarinia2؛ Khosro Sagheb-Talebi3؛ Reza Akhavan4؛ Mohsen Hosseini2 | ||
| 1Ph.D. student, Dept. of Forestry, Faculty of Natural Resources, University of Tarbiat Modares | ||
| 2Associate prof., Dept. of Forestry, Faculty of Natural Resources, University of Tarbiat Modares | ||
| 3Associate prof., Research Institute of Forests and Rangelands | ||
| 4Assistant prof., Research Institute of Forests and Rangelands | ||
| چکیده [English] | ||
| In order to investigate the effect of environmental factors, including slope gradient, aspect and elevation on regeneration of Juniperus excelsa subsp. polycarpus, some Juniper stands were selected at Hezar Masjed Mountains, north of Khorasan Razavi province, north-east of Iran. Maps of slope gradient, aspect, elevation and landform were used and combined together to develop homogenious polygons of land units. The sampling was made, using stratification method and three sample plots, each 1000 m2. The plots were then laid out on the land units. To study the physico-chemical properties, one soil sample was made from subsoil, at each plot. The soil data were analyzed, using the Principle Component Analysis (PCA). Some parameters, including number of Juniper seedlings and their total height, collar diameter, health and vitality status were measured. The results showed that the elevation has significant effect on number of the seedlings, collar diameter and total height of the seedlings and proportion of health classes. Slope gradient showed significant effect on number of the seedlings per plot. The geographic aspect showed significant relation only with the proportion of moderate healthy seedlings. The impact of land form on Juniper seedlings was not significant. The Principle Component Analysis (PCA) output showed that phosphorus, clay, silt, EC and CaCo3 are the most important factors influencing regeneration of Juniperus excelsa subsp. polycarpus. | ||
| کلیدواژهها [English] | ||
| elevation, Slope, geographic aspect, landform, regeneration, Juniperus excelsa | ||
| مراجع | ||
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- Alijanpour, A., Banj Shafiei1, A. and Eshaghi Rad, J., 2010. Investigation of natural regeneration characteristics in west oak forests within different levels of site factors (case study: Piranshahr region). Iranian Journal of Forest, 2(3): 209-219. - Alijanpour, A., Eshaghi Rad, J. and Banj Shafiei, A., 2009. Investigation and comparison of two protected and non-protected forest stands regenerationdiversity in Arasbaran. Iranian Journal of Forest, 1(3): 209-217. - Anonymous, 2011. Ecotorism fundamental studies report for identifying appropriate sites at executive parcel level in Hezar Masjed project. General Office of Khorasan Razavi province Natural Resources, 381 p. - Auken, O.W.V., Jackson, J.T. and Jurena, P.N., 2004. Survival and growth of Juniperus seedlings in Juniperus woodlands. Plant Ecology, 175: 245-257. - Avany, N., 2006. Investigation on natural regeneration of juniper species (Juniperus polycarpus) at Firoozkouh area of Iran. PhD thesis, Faculty of Natural Resources, Sari University, I.R. Iran, 98 p. - Fahimipour, E., Zare Chahouki, M.A and Tavili, A., 2010. Study of some index species – environmental factors relationships in mid Taleghan rangelands Rangeland, 4(1):23-32. - Gairola, S., Rawal, R.S. and Todaria, N.P., 2008. Forest vegetation patterns along an altitudinal gradient in sub-alpin zone of west Himalaya, India. African Journal of Plant Science, 2(6): 42-48. - Gardner, A.S. and Fisher, M., 1994. How the forest lost its trees: Just so story telling about Juniperus excelsa in Arabia. Journal of Arid Environments, 26: 299-301. - Ghimire, B., Mainal, K.P., Lekhak, H.D., Chaudhary, R.P. and Ghimeray, A.K., 2010. Regeneration of Pinus wallichiana AB Jackson in a trans-Himalayan dry valley of north-central Nepal. Himalayan Journal of Sciences, 6(8): 19-26. - Hosseini, A., Moayeri, M.H. and Haidari, H., 2008. Effect of site elevation on natural regeneration and other characteristics of oak (Quercus brantii) in the Hyanan's forest, ilam. J. Agric. Sci. Natur. Resour., 15(1): 1-11. - Johnson, D.D. and Miller, R.F., 2006. Structure and development of expanding western juniper woodlands as influenced by two topographic variables. Forest Ecology and Management, 229: 7-15. - Khosrojerdi, E., Dorroudi, H., Ahmadi, A., Thaghafi Khadem, F. and Namdost, T., 2008. Investigation on effect of mother trees on establishment of Juniperus excelsa seedlings at Hezarmasjed Forests. Pajouhesh-va-Sazandegi, 21(4): 219-227. - Khosrojerdi, E., Dorroudi, H. and Namdost, T., 2009. Effects of grazing and topographic factors on reproduction of Pistachio (Pistacia vera L.) in Khajeh Forests. Pajouhesh-va-Sazandegi, 21(4): 38-44 - Korori, S.A.A. and Khoshneviss, m., 2000. Ecological and environmental studies of Juniperus habitate in Iran. Research Institute of Forests and Rangelands, Publication No. 229, 208 p. - Mirzaei, J., Akbarinia, M., Hosseini, S.M., Tabari, M. and Jalali, S. Gh., 2007. Comparison of natural regenerated woody species in relation to physiographic and soil factors in Zagros forests (Case study: Arghavan reservoir in north of Ilam province. Pajouhesh & Sazandegi, 77: 16-23 - Mohammadnezhad Kiasari Sh., Safaei M., Nourouzi, Sh.A., Ahmadian S.H. and Mataji, A.A., 2009. The evaluation of protection along with water spreading operations on the quantitative improvement of greek juniper seedlings (Juniperus excelsa Bieb.) (case study: Mazandaran-Poshtkoh watershed), Water and Soil Science (Journal of Science and Technology of Agriculture and Natural Resources), 13(48):415-425. - Momeni Moghaddam, T., 2002. Investigation on some ecological and silvicultural characteristics of juniper natural habitat on Shiravan Kopeh Dagh mountain slope, Iran. MSc thesis, Faculty of Natural Resources, Tarbiat Modarres University, I.R. Iran, 98 p. - Otto, R., Krusi, B.O., Delgado, J.D., Andez-Palacios, J.M.F., Del-Rey, E.G. and Arevalo, J.R., 2010. Regeneration niche of the Canarian juniper: the role of adults, shrubs and environmental conditions. Annals Forest Science, 67: 709-719. - Ravanbakhsh, H., Marvie Mohajer, M.R. and Etemad, V., 2010. Natural regeneration of woody species in woodlands of southern slopes of Elborz mountains(case study: Latian watershed). Iranian Journal of Forest, 2(2): 113-125. - Salarian, A., Mataji, A. and Iranmanesh, Y., 2000. Investigation on site demand of Almond (Amygdalus scoparia Spach.) in ZagrosForests (Case study: Karebas site of Chaharmahal and Bakhtiari province). Iranian Journal of Forest and Poplar Research, 16(4): 528-542. - Sarangzai, A.M., 2000. Population Structure natural and Regeneration Potential (M.BIEB) in Northern Baluchestan Pakistan. Ph.D. Thesis, Department of Botany University of Baluchestan, Quatta, 177 p. - Zahreddine, H.G., Barker, D.J., Quigley, M.F., Sleem, Kh. and Struve, D.K., 2007. Patterns of Woody Plant Species Diversity in Lebanon as Affected by climatic and Soil Properties. Lebanese Science Journal, 8(2): 21-44. | ||
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