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تاثیر عوامل محیطی بر پوشش‌گیاهی مراتع منطقه سمیرم استان اصفهان با استفاده از آنالیز رج‌بندی | ||
| تحقیقات مرتع و بیابان ایران | ||
| مقاله 19، دوره 26، شماره 3، مهر 1398، صفحه 741-753 اصل مقاله (786.42 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijrdr.2019.120026 | ||
| نویسندگان | ||
| مسعود برهانی* 1؛ زهرا جابرالانصار2 | ||
| 1استادیار، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اصفهان ، ایران | ||
| 2محقق، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اصفهان ، ایران | ||
| چکیده | ||
| همبستگی بین پوشش‌گیاهی و عوامل محیطی از مهمترین مباحث مرتبط با ساختار و عملکرد جوامع گیاهی است. عوامل محیطی نظیر اقلیم، توپوگرافی و خاک، می تواند پویایی جوامع گیاهی را دستخوش تغییرات کند. در این پژوهش، اثر عوامل محیطی بر پوشش گیاهی برخی مکان‌های مرتعی منطقه سمیرم استان اصفهان بررسی شد. نمونه‌برداری در 52 مکان مرتعی مورد مطالعه به روش تصادفی- سیستماتیک انجام گرفت. در هر مکان، 40 پلات یک متر مربعی در امتداد چهار ترانسکت انداخته و در هر پلات درصد پوشش گونه‌های گیاهی به روش تخمین نظری اندازه‌گیری شد. لایه‌های رقومی متغیرهای اقلیمی و توپوگرافی در محیط 1/10 ArcGIS تهیه و مقادیر مربوط به مکان‌های مرتعی استخراج گردید. نمونه‌های خاک از مناطق مورد مطالعه برداشت و برخی خصوصیات فیزیکی و شیمیایی خاک اندازه‌گیری شد. نتایج حاصل از آنالیز افزونگی (RDA) و تجزیه خوشه‌ای نشان داد که متغیرهای میانگین دمای سالانه، همدمایی و متوسط دما در مرطوب‌ترین فصل، اسیدیته، بافت و ماده آلی خاک و ارتفاع از سطح دریا تاثیرگذارترین عوامل موثر بر درصد پوشش گونه‌های گیاهی می‌باشند. | ||
| کلیدواژه‌ها | ||
| رویشگاه‌های مرتعی؛ عوامل اکولوژیکی؛ اقلیم؛ خاک؛ خوشه‌بندی | ||
| عنوان مقاله [English] | ||
| Effects of environmental factors on vegetation in rangelands of Semirom (Isfahan province) using ordination analysis | ||
| نویسندگان [English] | ||
| Masoud Borhani1؛ Zahra Jabeolansar2 | ||
| 1Assistant Professor, Research Division of Natural Resources,Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran | ||
| 2Researcher, Research Division of Natural Resources,Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran | ||
| چکیده [English] | ||
| Correlation between vegetation and environmental variables is the most important issue related to the structure and function of rangeland ecosystems. Environmental factors such as climate, topography, and soil can alter the dynamics of plant communities. In this study, the effects of environmental factors on vegetation of some rangeland sites in Semirom region of Isfahan province were evaluated. Sampling was carried out at 52 rangeland sites in a random-systematic way. At each location, 40 plots of one square meter were placed along four transects, and the percentage of vegetation cover in each plot was measured using ocular-estimate method. The grid layers of bioclimatic and topographic variables were prepared in ArcGIS 10.1 and values for each range site were extracted. Soil samples were collected from range sites and some physical and chemical properties of the samples were measured. Redundancy Analysis (RDA) was used to evaluate the relationships between environmental factors and the plant species cover. Cluster analysis was also used to group the studied range sites based on environmental factors. According to the results, annual mean temperature, isothermality, mean temperature of wettest quarter, soil texture, pH, organic matter, and elevation were identified as the most important ecological factors affecting plant species cover. | ||
| کلیدواژه‌ها [English] | ||
| Rangeland habitats, Ecological factors, Climate, Soil, Clustering | ||
| مراجع | ||
|
- Aguado-Santacruz, A. and Gracia- Moya, E., 1998. Environmental factors and community dynamics at the Souther most part of the North American Graminetum-I. on the contribution of climatic factors to temporal variation in species composition. Journal of Plant Ecology, 135(1):13-29. - Aliakbari, M., Vahabi, M. R., Jafari, R., Karimzadeh, H. R. and Baniebrahimi, M., 2012. The investigation of habitat indicators of two species (Agropyron trichophorum link, Rieyt and Astragalus verus Olivier) according to the soil factor in Ferydan rangelands. Journal of Plant and Ecosystem, 8(30): 59-68. - Ardakani, M. R., 2005. Ecology. Teheran University Publishers, Tehran. - Austin, M.P., 1989. Soil, climate and plant community relationships on some rangelands of Northeastern Nevada. Journal of Range Management, 42(4): 275-289. - Bagheri, S., Jafari, M., Raufirad, V. and Jafarian, Z., 2016. A study of the habitat indicators of Bromus tomentellus Bioss. in relation to edaphic factors. Journal of Plant and Ecosystem, 48: 3-18. - Bayat movahed, F., 1998. Study the relation between vegetation and some environmental variables including elevation, aspect and slope. Journal of Pajouhesh and Sazandegi, 45: 24-27. - Enright, N. J., Miller, B. P. and Akhter, R., 2005. Desert vegetation and vegetation-environment relationships in Kirthar National Park, Sindh, Pakistan. Journal of Arid Environments, 61(3): 397-418. - Fahimipour, E., Zare chahoki, M. A. and Tavili, A., 2010. The relationships between environment characteristics and vegetation in Taleghan rangelands. Journal of Rangeland, 4(1): 23-32. - Fischer, H. S. and Bemmerlein, F. A., 1989. An outline for data analysis in phytosociology: past and present. Journal of Vegetatio, 81: 17-28. - Gavili kilaneh, E. and Vahabi, M. R., 2012. The effect of some soil characteristics on range vegetation distribution in Central Zagros, Iran. Journal of Science and Technology Agriculture and Natural Resources, 16(59): 245-258. - Ghorbani, A. and Bahrami, B., 2017. The influence environmental factors on the distribution of plant species in the southeast rangelands of Sabalan. Journal of Whatershed Management Research, 115: 15-29. - Hegazy, A. k., Demerdash, M. A. E. and Hosni, H. A., 1998. Vegetation, species diversity, and floristic relations along an altitudinal gradient in South-West Saudi Arabia. Journal of Arid Environments, 38: 3-13. - Heidari, F., Dianati Tilaki, G. A. and Alavi, S. J., 2018. Evaluation on the response of Bromus tomentellus Boiss and Festuca ovina L., to some environmental variables using the generalized additive model (GAM) in the rangeland of Galandrood watershed in Mazandaran province, Iran. Iranian Journal of Plant Biology, 9(33): 79-94. - Jafari, M., Rostampour, M., Tavili, A., Zare Chahouki, M. A. and Farzadmehr, J., 2009. Direct gradient analysis of plant species and environmental factors in ecological groups, Case study: Zirkouh rangelands of Qaen. Journal of Rangeland, 2(4): 329-343. - Kent, M. and Ballard, J., 1988. Trends and problems in the application of classification and ordination methods in plant ecology. Journal of Vegetation, 78(3): 109-124. - Khatibi, R., Ghasemi Arian, Y., Jahantab, E., Haji Hashemi, M. R., 2013. Investigation on relationships between soil properties and vegetative types (Case Study: Dejinak-e-Khash Rangeland - Taftan Balochistan). Iranian Journal of Range and Desert Research, 19(1): 72-81. - Khodagholi, M., Saeidfar, M., Feizi, M. T. and Borhani, M., 2004. Vegetation types of Semirom region in Isfahan province. Research Iinstitute of Forests and Rangelands Publishers, Tehran. - Kia, F., Tavili, A. and Javadi, S. A., 2011. Relationship between some rangeland species distribution and environmental factors in Chaharbagh region of Golestan Province, Journal of Rangeland, 3: 292-301. - Lesvic, M. H., 1993. Hay meadow communities in western Norway and relations between vegetation and environmental factors, Nordic. Journal of Botany, 13: 195-206. - Mehmood, T. and Iqbal, Z.M., 1995. Vegetation and soil characteristics of the wasteland of Valika Chemical Industries near Manghopir, Karachi. Journal of Arid Environments, 30(4): 453-462. - Mehrdadi, M., 2002. Effects of some soil physical & chemical characteristics on the dominant rangeland species in Kahak, Qum province. M.Sc. Thesis, Faculty of Natural Resources, University of Tarbiat Modarres, Nour. - Mirdavoodi, H. R., Zahedi, H., Shakoei, M., Tourkan, J., 2006. Relationships between the most important ecological factors and rangeland vegetative using multivariate data analysis methods. (Case study:South of Markazi province). Iranian Journal of Range and Desert Research, 13(3): 201-211. - Mohtashamnia, S., Zahedi, G. H. and Arzani, H., 2007. Vegetation ordination of steppic rangelands in relation to the edaphical & physiographical factors (Case study: Abadeh rangelands, Fars). Journal of Rangeland, 1(2): 142-158. - Moradi, H. R. and Ahmadipour, S. H., 2006. Study the effect of morphology and soil on vegetation using GIS, Case study: Vaz watershed. Journal of Geographical Studies, 58: 17-32. - Morison, J. and Morecroft, M., 2006. Plant growth and climate change. Blackwell Publishing, Colchester, UK, 209p. - Nedrow, W.W., 1937. Studies on the ecology of roots. Journal of Ecology, 18: 27-52. - Noy-Meir, I., 1974. Multivariate analysis of the semiarid vegetation in South-Eastern Australia. II. vegetation catenae and environmental gradients. Australian Journal of Botany, 22(1): 115 - 140. - Parsamehr, A. H., Vahabi, M. R. and Khorovani, Z., 2015.Investigation on relation between plant communities and some soil properties using canonical correspondence analysis (Case study: Ardestan rangelands. Iranian Journal of Range and Desert Research, 22(1): 194-203. - Pilehvar, B., Jafari Sarabi, H. and Veiskarami, G. H., 2016. Plant communities change under different physiographic conditions and soil properties in the central Zagros forests. Iranian Journal of Forest and Poplar Research, 24(3): 402-414. - Pourbabaei, H., Rahimi, V. and Adel, M. N., 2015. Effect of environmental factors on rangeland vegetation distribution in Divan-Darre Area, Kurdistan. Iranian Journal of Applied Ecology, 4(11): 27-39. - Saberian, G. H., 2002. Study the correlation among vegetation, soil and geomorphologic units in Kasilian rangeland using geographic information system. M.Sc. Thesis, Tarbiat Modarres University, Nour. - Ter Braak, C. J. F. and Smilauer, P., 1998. CANOCO reference manual and user,s guide to Canoco for windows: software for Canonical Community Ordination (version 4), Microcomputer Power, Ithaca. - Toranjzar, H., Jafari, M., Azarnivand, H. and Ghanadha, M. R., 1998. Investigation of the relation between soil characteristics and vegetation in Vashnouh rangeland (Qum Province). Journal of Desert, 10(2): 349-360. - Villers-Ruiz, L., Trejo-Vazquez, I. and Lipez-Blanco, J., 2003. Dry vegetation in relation to the physical environment in the Baja California Peninsula, Mexico. Journal of Vegetation Science, 14: 517-524. | ||
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