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بررسی تأثیر عوامل بوم‌شناختی بر درصد تاج پوشش Astragalus gossypinus در بخشی از مراتع نیمه استپی استان کردستان | ||
| تحقیقات مرتع و بیابان ایران | ||
| مقاله 18، دوره 25، شماره 2، مرداد 1397، صفحه 427-437 اصل مقاله (282.42 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijrdr.2018.116853 | ||
| نویسندگان | ||
| آیدین فرجی1؛ حامد جنیدی* 2؛ بهرام قلی نژاد2 | ||
| 1دانش‌آموخته کارشناسی ارشد مرتعداری، دانشکده منابع طبیعی، دانشگاه کردستان، سنندج، ایران | ||
| 2استادیار، دانشکده منابع طبیعی، دانشگاه کردستان، سنندج، ایران | ||
| چکیده | ||
| این پژوهش به منظور بررسی مهمترین عوامل بوم‌شناختی مؤثر بر درصد تاج پوشش گون سفید (Astragalus gossypinus) در بخشی از مراتع نیمه‌خشک استان کردستان صورت گرفت. با پیمایش صحرایی سه ناحیه شامل دزلی، نران و گردنه مروارید به عنوان محدوده مطالعاتی انتخاب شدند. تعداد پلات‌ها با توجه به ویژگی‌های پوشش گیاهی و سایر عوامل محیطی، در منطقه دزلی 6 نقطه معرف نمونه‌برداری، در منطقه نران 3 نقطه و در گردنه مروارید 4 نقطه معرف تعیین گردید. نمونه‌برداری از پوشش گیاهی در هر تیمار به روش تصادفی - سیستماتیک در قالب پلات‌های 1×1 متر و در طول دو ترانسکت بطول 100 متر انجام شد. نمونه‌گیری از خاک در هر پلات با سه تکرار و از عمق50-0 سانتی‌متری در پای گیاه و بین پایه‌ها انجام گرفت. در نمونه‌های خاک فاکتورهای درصد رس، سیلت، شن، گچ، آهک، هدایت الکتریکی، اسیدیته، فسفر، کلسیم، منیزیم، درصد سنگ و سنگریزه، نیتروژن، کربن و پتاسیم اندازه‌گیری شد.برای بررسی خصوصیات خاک و پوشش گیاهی از تجزیه واریانس یک‌طرفه و به منظور تعیین اثر عوامل محیطی بر درصد تاج پوشش گون از رگرسیون چند متغیره استفاده گردید. نتایج نشان داد که فاکتورهای کربن، پتاسیم، اسیدیته، منیزیم، فسفر، کلسیم، آهک، ازت، رس، شن، متوسط بارش سالیانه، درصد تاج پوشش در بین رویشگاه‌های مختلف دارای اختلاف معنی‌دار در سطح یک درصد است. سایر فاکتورها از جمله گچ، هدایت الکتریکی در بین رویشگاه‌های مختلف معنی‌داری نشدند. بر اساس نتایج به دست آمده، در نتایج رگرسیونی، آهک، ارتفاع و بارش هر کدام به ترتیب با 25درصد ،12درصد و 7 درصد تغییرات درصد تاج پوشش را توجیه می‌کند. | ||
| کلیدواژه‌ها | ||
| درصد تاج پوشش؛ Astragalus gossypinus؛ عوامل بوم‌شناختی؛ کردستان | ||
| عنوان مقاله [English] | ||
| Effects of ecological factors on the canopy cover percentage of Astragalus gossypinus in a part of semi-steppe rangelands of Kurdistan | ||
| نویسندگان [English] | ||
| Aydin Faraji1؛ Hamed Joneidi Jafari2؛ Bahram Gholinejad2 | ||
| 1Former M.Sc. Student in Range Management, Faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran | ||
| 2Assistant Professor, faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran | ||
| چکیده [English] | ||
| This study aimed to determine the most important ecological factors affecting the canopy cover of Astragalus gossypinus in some parts of semi-steppe rangelands of the Kurdistan province. Field survey was carried out in three areas of Kurdistan meadows including Dezli, Narran, and Murvarid saddle. The number of plots, according to the characteristics of the vegetation and other environmental factors, was calculated to be 6 for Dezli, 3 for Naran, and 4 for Murvarid saddle. The plots of vegetation were sampled in a random-systematic manner in an area of 1 × 1 m and along two transects of 100 m. Soil sampling in each plot was performed with three replications and at the depth of 0 to 50 cm at and between the base of the plants. Factors such as soil, clay, silt, sand, gypsum, lime, electrical conductivity, pH, phosphorus, calcium, magnesium, stones and pebbles, nitrogen, carbon, and potassium were measured. For the analysis of soil and vegetation, ANOVA, and in order to determine the effect of different environmental factors on the vegetation cover, multiple regressions were applied. To determine the most important factors affecting the canopy cover of vegetation, principal component analysis was also used. The results showed that the factors including carbon, potassium, pH, magnesium, phosphorus, calcium, lime, nitrogen, clay, sand, average annual rainfall, and the canopy cover percentage were significantly different at the level of 1%; while, the factors such as gypsum and electrical conductivity were not significant among the different habitats. The regression results showed that the factors including lime, height, and precipitation justified the changes of cover 25%, 12% and 7%, respectively. | ||
| کلیدواژه‌ها [English] | ||
| Percent canopy cover, Astragalus gossypinus, ecological factors | ||
| مراجع | ||
|
- Abedi, M., 2006. Comparison of two methods of yield estimation in grass and shrub lands. Thesis submitted for M Sc. Tarbiat Modares University. - Ahmadi, A., Zahedi Amiri, Gh., Mahmodi, Sh. and Moghiseh, E., 2007. Soil vegetation relationship in saliferous and gypsiferous soils in winter rangeland (Eshtehard). Iranian Journal of Natural Resources, 1049-1058. - Ahmadi, H., Javanshir, K., Ghanbarian, Gh. and Habibian, S. H., 2002. An investigation on ecological characteristics of plant communities in relation to geomorphological units. Iranian Journal of Natural Resources, 55. 81-94. - Ardakani, M. R., 2002. Ecology. Tehran University Press, Iran, 340 P. - Asadian, Gh., 1996. Autecology of Astragalus spp. and the methods of its utilization in southern Alvand Hamedan thesis for degree. Gorgan University Pres, Iran, 221p. - Azarnivand, H., Tavili, A., Sadeghi Sangdehi, S. A., Jafari, M. and Zare Chahouki, M. A., 2011. Investigation on ecological characteristics of Astragalus squarrosus in Kashan rangelands, Iranian Journal of Range and Desert Reseach, 18 (3): 372-382. - Dianati Tilaki, Gh., Amanollahi, J. and Salehi, A., 2009. Relationship of vegetation with soil properties in rangelands of Lar National Park. Abstract book of the 4th National Conference on Rangeland and Rangeland Management, Forest and Rangeland Research Institute Press, 364p. - Esfenaji,J., Rohani, H. and Karimian, V., 2013. Investigation of effect of environmental parameter on conopy cover of some plant species in Golestan province. The First Conference on Agriculture and Natural Resources, Tehran. - Fatahi, B., Aghabeigi, S., Ildorimi, A., Maleki, M., Hassani, J. and Sabetpour, T., 2009. Investigation of theeffect of physical factors on the habitats of Astragalus gossypinus in Zagrus Montanous rangelands (a case study in Galleh Bor Rangelands, Hamedan Province). Journal of Rangeland, 3:203-216. - Fatahi, B., Aghabeigi, S., Ildermi, A. R., Maleki, M., Hasani, J. and Sabetpour, T., 2011. Effect of Some Environmental Factors on Plant Species Diversity in the Mountainous Grasslands (Case Study: Hamedan - Iran). Journal of Rangeland , 1 (1): 45-52. - Ghahremani, A., 1995. Cormophytes of Iran, Tehran University Press, Iran, 1-4. - Ghomeshi Bozorg, P., Vahabi, M. R. and Fazilati, M., 2012. Quality survey on gum tragacanth from Astragalus gossypinus Fischer in west region of Isfahan province, Iranian Journal of Medicinal and Aromatic Plants, 27(4): 668-680. - Hamblin, W.K., 1985. The earth dynamic systems. Macmillan Publishing Company, London. 528p. - Hardtle, W., 2006. Vegetation responses to environmental condition in flood plain grasslands: requisites for preserving plant species diversity. Basic and Applied Ecology, 7. 280-288. - Holden, L. A., 1999. Comparison of methods of in vitro dry matter digestibility for ten feeds. Journal of Dairy Science, 82: 1791-1794. - Jafarian, Z., Arzani, H., Jafari. M., Zahedi, Gh. and Azarnivand, H., 2009. Analysis of the relationship between climaticfactors and the distribution of plant communities and physiographic Using classification and ordination of grassland Rineh.. Journal of Rangeland, 2 (2): 125-140. - Jafari Haghighi, M., 2003. Soil analysis methods, sampling and important physical and chemical analyses with emphasis on theory and applied principles. Nedaye Zoha Press, Iran, 236p. - Janisova, M., 2005. Vegetation environment relationship in dry calcareous grassland. Journal of Ecologia. Bratislava, 25-44. - Kent, M. and Coker, P., 2001. Vegetation description and analysis (a practical approach), Translated m. Mesdaghi, Jahad-e- Daneshgahi Mashhad Publication, 287p. - Masoumi, A., 2006. Iran Astragaluses. Volume 5, Publications Research Institute of Forests and Rangelands. - Mohtasham Nia, S., Zahedi, Gh. and Arzani, H., 2007. Vegetation ordination of steppic rangelands in relation to the edaphically and physiographical factors (case study: Abade rangelands Fars). Journal of Rangeland, 1(2): 142-158. - Momeni Moghaddam, T., Saghebtalebi, Kh., Akbarinia, M., Akhavan, R. and Hosseini, M., 2011. Effects of physiographic and edaphic factors on some quantitative and qualitative properties of Juniperus – Case Study: Line Region, Khorasan. Iranian Forestry Journal, 4(2): 143-156. - Moradi, H. R., Tahmasebi, A. and Erfanzadeh, R., 2004. Study of relation among vegetation, soil and geomorphology factors in Kasilian watershed using GIS. Iranian Agricultural Sciences and Natural Resources, 38-53. - Piri Sahragard, H., Azarnivand, H., Zare Chahouki, M. A., Arzani, H. and Qomi, S., 2009. The study of environmental factors affecting distribution of plant communities of in the middle Taleghan watershed. Range and Watershed Journal, 3(2): 159-168. - Sangoony, H., Karimzadeh, H. R., Vahabi , M. R. and Tarkesh esfahani, M., 2012. Determining the potential habitat of Astragalus gossypinus Fischer in west region of Isfahan, using Ecological Niche Factor Analysis. Journal of Applied RS & GIS Techniques in Natural, 3(2): 1-12. - Schimel, D. S., Stillwell, M. A. and Woodmansee, R. G., 1985. Biogeochemistery of C, N and P in a soil catena of the short grass steppe. Ecology, 276-282. - Vahabi, M. R., Basiri, M., Moghadam, M. and Masoumi, A. A., 2007. Determination of the most effective habitat indices for evaluation of tragacanth sites in Isfahan province. Journal of the Iranian Natural Resources, 59(4): 1013-1029. - Zare Chahouki, M. A., 2001. Investigation of relationships between soil physic chemical characteristics andsome rangeland species on Poshtkoh rangelands in Yazd province. M.Sc. Thesis in Range Management. - Zare Chahouki, M. A., 2006. Modeling the spatial distribution of plant species in arid and semi-arid rangelands. PhD Thesis in Range management, Faculty of Natural Resources, University of Tehran, 180p. - Zhang, J. T. and Li, J., 2006. The relationship between environment and plant communities in the middle part of Tai hang Mountain range. North china community ecology, 155-163. - Zolfaghari, F., Pahlavan, A., Fakhireh, A. and Jabari, M., 2009. Effect of environmental parameter on plant distribution in Aghtaghe, Iranian journal of Range and Desert Research, 40(3): 431-444. | ||
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