| تعداد نشریات | 286 |
| تعداد نشریات سازمان | 84 |
| تعداد شماره‌ها | 3,012 |
| تعداد مقالات | 33,669 |
| تعداد مشاهده مقاله | 44,701,916 |
| تعداد دریافت فایل اصل مقاله | 36,992,054 |
شناسایی روندتغییرات نواحی اقلیمی حوضه‌های آبخیز منتهی به کانونهای گردوغبار استان خوزستان (کارون بزرگ، کرخه و زهره- جراحی) | ||
| تحقیقات مرتع و بیابان ایران | ||
| مقاله 11، دوره 27، شماره 2، شهریور 1399، صفحه 300-320 اصل مقاله (2.63 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijrdr.2020.127555.1894 | ||
| نویسندگان | ||
| فاطمه درگاهیان* 1؛ سکینه لطفی نسب اصل2 | ||
| 1عضو هیئت علمی بخش تحقیقات بیابان موسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات،آموزش و ترویج کشاورزی، تهران، ایران. | ||
| 2عضو هیئت علمی بخش تحقیقات بیابان، موسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات،آموزش و ترویج کشاورزی، تهران، ایران. | ||
| چکیده | ||
| در این مطالعه به بررسی و تحلیل روند تغییرات دهه‌ای نواحی اقلیمی حوضه‌های آبخیز کرخه، کارون و زهره-جراحی پرداخته شده است. برای این منظور از پایگاه داده شبکه‌ای دما و بارش اسفزاری طی سال‌های 1346-1395، با قدرت تفکیک مکانی ۱۵*۱۵ کیلومتر که در سیستم تصویر لامبرت مخروطی هم‌شکل نگاشته شده استفاده شده است. در واقع چون این دو عنصر مهمترین پیشران اقلیمی در منطقه مورد مطالعه محسوب و تغییرات سایر عناصر در این دو عنصر بیشتر نمایان می‌شود برای بررسی و تحلیل تغییرات نواحی اقلیمی از آنها استفاده شده است. بعد از تشکیل پایگاه داده‌ای به منظور شناسایی نواحی اقلیمی از تحلیل خوشه‌ای و برای اعتبارسنجی آن از تحلیل ممیزی بهره گرفته شده است. تحلیل خوشه‌ای بر روی 52 نمایه دما و بارش (میانگین ماهانه و سالانه، ضریب تغییرات ماهانه و سالانه دما و بارش) طی دورههای مختلف اجرا و نواحی و تغییرات آنها مورد بررسی و تجزیه تحلیل قرار گرفت. در نتیجه سه ناحیه اقلیمی از جمله ناحیه مرطوب و معتدل، ناحیه گرم و خشک و ناحیه بسیار گرم و خشک شناسایی شدند. همچنین نتایج نشان داد که به سمت دورههای اخیر ناحیه مرطوب علاوه بر اینکه از جابجایی مکانی برخوردار بوده است، از وسعت آن کاسته شده است به طوری که در دوره پنجم وسعت این ناحیه به کمتر از پنج درصد رسیده است. | ||
| کلیدواژه‌ها | ||
| تغییرات ناحیه؛ حوضه آبخیز؛ کانون گرد و غبار؛ دما و بارش مقدمه | ||
| عنوان مقاله [English] | ||
| Identify Trend of changes Climatic zones in the watersheds leading to Dust source In Khuzestan Province (Karkheh, Karoun and Zohreh - Jarahi) | ||
| نویسندگان [English] | ||
| Fatemrh Dargahian1؛ sakineh lotfinasabasl2 | ||
| 1Assistant Prof., Desert Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran | ||
| 2Assistant Prof., Desert Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran | ||
| چکیده [English] | ||
| This study investigates and analyzes the decades of change in climatic zones in Karkheh, Karoun, and Zohreh - Jarahi watersheds. For this purpose, the database of temperatures and precipitation networks during the period 1976-2015, with a spatial resolution of 15 x 15 km, formatted in the conical Lambert image system, was used. In fact, because these two elements are the most important climatic drivers in the study area and the changes of other elements in these two elements are more visible, they have been used to study and analyze the climate change zone. After establishing the database, cluster analysis was used to identify climatic regions, and the audit analysis was used to validate it. Cluster analysis was performed on 52 indices of temperature and precipitation (monthly and annual average, coefficient of variation of temperature, and precipitation monthly and annual changes) during different periods, and climatic zones and their changes were analyzed. Based on the results, three climatic zones including humid and moderate zone, hot and dry zone, and very hot and dry zone were identified in the study area. The results showed that in recent periods, the humid area, in addition to having spatial displacement, its area reduced so that in the fifth period, the area reached less than five percent. Also, the hot and dry zone, stretched as a strip from the northwest to the southwest of the study area, had less spatial displacement, unlike the humid area, while its area increased in recent periods. On the other hand, the area of the very hot and dry zone has increased towards recent periods. Spatial and temporal increase of hot and dry climates and very hot and dry climates and decrease of the humid zone has been able to lead to the development and intensification of dust source, especially downstream of the studied watersheds. | ||
| کلیدواژه‌ها [English] | ||
| Zone Changes, Watershed, dust source, temperature and rainfall | ||
| مراجع | ||
|
- Alvares, C. A., Stape, J. L., Sentelhas, P. C., de Moraes, G., Leonardo, J. and Sparovek, G., 2013. Köppen's climate classification map for Brazil. Journal of Meteorologische Zeitschrift, 22(6): 711-728. - Asakereh, H., Doostkamian, M., 2015. Analysis of Rainfall Water Cycles in Iran Earth, Geographical Researches of Tehran, 12: 435-444. - Cabrera, L, Azpra Romero, E., Zarraluquisuch, V., Gay Garcia, C. and EstradaPorrua, F., 2012. Cluster analysis for validated climatology stations using precipitation in Mexico. Journal of Atmosphere, 25:.339-354. - Azizi, G.H., 2001. Digital classification of selected climate stations in Iran by Litin Ski Method. Journal of Geographical Research, 41: 39-51. - Doostkamian, M., Haghighi, I. and Bourbouri, A., 2017. Investigation and identification of spatial variations of hot and cold temperature zones of Iran during different periods. Journal of Geography and Environmental Hazards, 6(22):142-162. - Deen Pajouh, Y., Fakhri, A., Moghaddam, M., Jahanbakhsh, S. and Mirnia, M., 2003. Selection of Variables to Multiply Iran Rainfall Climate Map. Iranian Journal of Agricultural Sciences, 34(4): 823 - 809. - Esmail Nejad, M., 2005, Climatic zoning of Sistan and Baluchestan province with GIS, MSc thesis, University of Sistan and Baluchestan, Zahedan. - Eslahi, M., 2003, Climate change detection in Iran by clustering analysis, Third Regional Conference and First National Conference on Climate Change, Iran Meteorological Organization, Isfahan. - Ghasemifar, E. and Naserpour, S., 2014. Climatic zoning of Zagros region. Sepehr Geographical Information Journal, 23 (89): 54-60. - Grami Motlagh, A. and Shabankare, M., 2006. Climatic zoning of Bushehr province, Journal of Humanities, University of Isfahan, 20 (1): 187-210. - Golkar, H., Rezaeinejad, M. and Tavousi, M., 2016, Climate zoning of South Khorasan Province by GIS software Journal of Water and Soil Conservation, 6 (1): 47-62. - Harding, A. E., Gachon, P. and Nguyen, V.T.V., 2010. Replication of atmospheric oscillations, and their patterns, in predictors derived from Atmosphere–Ocean Global Climate Model output. International Journal of Climatology, 31(12):1841-1847. - Heydari, H. and Alijani, B., 2008, Climatic classification of Iran using multivariate statistical techniques, Journal of Geographical Research, 37: 57-74. - Khosravi, M. and Aramesh, M., 2012. Climatic zoning of Markazi province using factor-cluster analysis. Journal of Geography and Environmental Planning, 23 (2): 87-100. - Khosravi, M. and Nazari Pour, H., 2010. Application of cluster analysis in identification of characteristics of rainy days (Khash Station), Journal of Geographical Space, 21: 90-65. - Khalili, A., Darvishsefat, A.A., Baradaran, R. and Bazrafshan, J., 2004. Proposed method for climatic zoning in GIS environment of northwestern Iran case study in Selyanev System. Desert Journal, 9(2): 237 - 227. - Khorshid Doost, A. M. and Shirzad, A. A., 2014. Investigation and analysis of precipitation in Northwest of Iran using cluster analysis and detection function analysis. Journal of Tabriz University of Geography and Planning, 49:101- 118. - Ghasemifar, E. and Naserpour, S., 2014. Climatic zoning of Zagros region. Sepehr Geographical Information Journal, 23 (89), 54-60. - Khosrowshahi, M., Hosseini, M. and Karami, A., 2018. Evaluation of a method for identifying and separating desert areas from climatological perspective. Rangeland and Desert Research Journal, 26 (1): 40-56. - Kalkstian, L.S., 1987. An evaluation of three clustering procedures for use in synoptic climatological classification, Journal of Climate and Apple Metrological, 26: 717 – 730. - Lobell, D. B. and Bonfils, C., 2008. The effect of irrigation on regional temperatures: A spatial and temporal analysis of trends in California, 1934–2002. Journal of Climate, 21:2063–2071. - Lam, N.T. and Wan, K.W. and Wong, S. L., 2010. Long-Term trends of heat stress and energy use implications in subtropical climates, Journal of Applied Energy, 87:608-612. - Lee, J. W.S. and Wong, D., 2009. Statistical analysis with ArcView GIS. Science journal, 7: 208-216. - Mazidi, A. and Khodagholi, M., 2009. Climatic zoning of Yazd Province, Using multivariate statistical methods, Journal of Geography and Regional Development, 13: 140-157. - Massoudian, A., 2005. Identification of Iranian rainfall regimes by cluster analysis method. Journal of Geographical Research, 37(52): 47-52. - Montazeri, M. and Bai, N., 2012. Mineral zoning of Caspian region using multivariate statistical methods. Geographical Research Quarterly, 27(2):77-90. - Massoudian, A., 2003. Iranian climatic areas. Journal of Development and Geography, 1 (2): 171-184. - Mazidi, A., Shafee, S.H. and Ebrahimi, R., 2012, Climatic determination of Kurdistan and Hamedan Provinces Using modern statistical methods and GIS. Journal of Geographical Thought, 6 (12): 52-67. - Mafakhari, O., Salliqeh, M., Alijani, A. and Akbari, M., 2017. Identifying and regionalizing temporal changes and precipitation of rainfall in Iran. Journal of Natural Geographical Research, 49 (2): 205-191. - Nazari Pour, H., Doostkamian, M., Asadi, A. and Bayat, A., 1393. Climatic zones of south and southwest of Iran with regional planning approach. Journal of Regional Planning, 4 (15): 119-132. - Golkar, H., Rezaeinejad, M. and Tavousi, M., 2016. Climate zoning of South Khorasan Province by GIS software Journal of Water and Soil Conservation, 6 (1): 47-62. - Salliqeh, M., Narimani, F. and Ismail Nejad, M., 2013, Climate map of Sistan and Baluchestan Province. Journal of Geography and Development, 6 (12): 101-106. - Teimouri, M. and Azimzadeh, J., 2012. Iran climate clustering using effective precipitation index, First National Conference on Drought and Climate Change, Karaj, Dehydration and Drought Research Center in Agriculture and Natural Resources. Steiner, D., 1965. A multivariate statistical approach to climatic regionalization and classification, 15:329 -347. | ||
|
آمار تعداد مشاهده مقاله: 323 تعداد دریافت فایل اصل مقاله: 318 |
||