پهنه‌بندی پدیده‌ی گردوغبار در استان مرکزی
محورهای موضوعی : آلودگی هوا
امیر انصاری
1
,
امیر هدایتی آقمشهدی
2
1 - استادیار، رشته علوم و مهندسی محیط زیست، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران.*(مسوول مکاتبات)
2 - استادیار، دانشگاه اراک، رشته علوم و مهندسی محیط زیست،دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، اراک، ایران.
کلید واژه: پهنه‌بندی, پدیده گردوغبار, GIS, استان مرکزی,
چکیده مقاله :
چکیده زمینه و هدف: زمینه و هدف: استان مرکزی در منطقه خشک و نیمه خشک و جزو استان های بیابانی کشور می باشد. در این استان بیش از 490 هزار هکتار از اراضی مرتعی و تالابی به اراضی بیابانی و کویری تبدیل گردیده است. که با وزش باد این مناطق بعنوان کانون انتشار گرد و غبار می باشند. همچنین ورود گرد و غبار فرا محلی از غرب کشور و کویر مرکزی ایران و استان قم از سمت شرق استان مرکزی را تحت تاثیر قرار می دهد. و هم اکنون آلاینده اصلی استان و کلان شهر اراک ذرات معلق می باشد. هدفازتحقیقحاضرتحلیلفضاییپدیده یگردوغباردراستان مرکزی دربازهزمانی1386 تا1393که از عوامل مهم آلودگی هوا در استان مرکزی میباشد. روش بررسی: در این مطالعهآمارروزانهگردوغباربا کد (06)ومیزاندیدافقیمربوطبهآندر10ایستگاهسینوبتیکاستانازاداره کل هواشناسیاستان مرکزیدریافتوبهصورتروزانه،ماهیانهوسالانهمحاسبهشد. سپسنقشه پهنه بندیآنبرایکلدورهوسال1393 درمحیطنرمافزاری GIS ترسیمشد. یافته‌ها: نتایجبدستآمدهنشانمی دهدکهمیزانگردوغباردرطولدورهداراییکبیشینهدر ایستگاه های اراک و ساوه میباشدوهرچهبهسمت ایستگاه های تفرشو خنداب پیشمیرویمازمیزانگردوغبارکاستهمیشود. ایستگاههواشناسیاراک با1322روزبیش ترینوایستگاههواشناسیتفرشبا85روزکم ترینمیزانروزگردوغباریرادرطولدورهداشتهاند. بحث و نتیجه گیری: میزان مساحت و درصد پهنه بندی در طبقات تعداد روزهای گردوغبار استان مرکزی نشان می دهد که حدود 65 درصد گرد و غبار استان فرا محلی و 35 درصد محلی می باشد.
Abstract Background and Objective: Markazi Province is located in an arid and semi-arid area and is regarded as one of the desert provinces in Iran. In this province, more than 490000 hectares of pasturelands and wetlands have changed into desert lands which are at the center of the release of local dust. On the other hand, the dust from ouside the west and the central desert of Iran and from Qom province at the east have affected Markazi Province. Nowadays, suspended particles are the main pollutants of Markazi Province and Arak city, which are one of the main factors involved in air pollution in Markazi Province. The present study aims to make a spatial analysis of dust phenomenon in Markazi Province within 2007-2014. Method: In the present study, the daily statistics for dust with a code (06) and horizontal visibility were received from 10 synoptic stations of Meteorological Department of Markazi Province and were estimated daily, monthly and annually. Then, the zoning map of dust phenomenon for the entire period and the year 2014 was drawn using the GIS software. Findings: The results indicated that Arak and Saveh cities have a maximum amount of dust at this interval and the extent of dust decreases by proceeding towards Tafresh and Khondab stations. Arak Meteorological Station with 1322 days and Tafresh Station with 85 days have had the maximum and minimum extent of dust, respectively. Discussion and Conclusion: The percentage of the zoning area affected by dust in Markazi Provinc showed that about 65% and 35% of dust in Markazi Province are local and from outside, respectively.
1- Shao, Yaping, Karl-Heinz Wyrwoll, Adrian Chappell, Jianping Huang, Zhaohui Lin, Grant. McTainsh, Masao Mikami, Taichu.Tanaka, Xulong Wang, Soonchan Yoon, (2011) Dust cycle: Anemerging core theme in Earth system science, Aeolian Research 2,181–204.
2- Park, S.U., Jeong, J.I., (2008) direct radiative forcing due to aerosols in Asia during March 2002. Science of the Total Environment 407,394–404.
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6- Jadideslami, M., Rahnamarad, J., Basirani, N., (2011) The origin of wind deposits in the wells of Zabol, Journal of Applied Geology, No 1. In Persian
7- Zolfaghari, Morteza., Omidi, M., Yaghobi, Y ., (2012) Investigating the environmental impacts of Meighan wetland on Arak city . 3rd national conference on combating desertification and sustainable development of Iran Desert Wetlands (Relying on Meighan Desert Wetland) . In Persian
8- Environmental Sustainability and Resources Engineers., (2006) Executive Plan of the Wind Erosion Foundation in the Desert Meighan of Arak" - Department of Natural Resources and Watershed Management of Markazi Province, No 5. In Persian
9- Hellali, J., Asadi Scoie, I., Bazrafshan, J., (2013) Zoning the number of days associated with the phenomenon of dusts in the region of Iran using the GIS. 2nd National Conference on Wind Erosion and Dust Storms. In Persian
10- Yarahmadi, D., Khoshkish, A., (2013) Zoning of the Phenomenon of Dust in the western half of Iran during the period from 1990 to 2009. Scientific Journals Management System.No31. In Persian
11- http://www.markazi.frw.org.ir/00/Fa/default.aspx
12- Ansari, A., (2015) Investigation of Factors Affecting the Condition of Air Pollution in Arak Metropolis. 1National Conference on Applied Researchs in Maintenance of Environment, Water and Natural Resources, Arak University, Iran. In Persian
13- Hossenzadeh, S.R., (1997) One Hundred and Twenty-Days Winds of Sistan". Journal of geographic research. No46.In Persian
14- Alijani, B., (1997) Iran's Weather. Payame Noor University Publishers, Tehran. In Persian
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1- Shao, Yaping, Karl-Heinz Wyrwoll, Adrian Chappell, Jianping Huang, Zhaohui Lin, Grant. McTainsh, Masao Mikami, Taichu.Tanaka, Xulong Wang, Soonchan Yoon, (2011) Dust cycle: Anemerging core theme in Earth system science, Aeolian Research 2,181–204.
2- Park, S.U., Jeong, J.I., (2008) direct radiative forcing due to aerosols in Asia during March 2002. Science of the Total Environment 407,394–404.
3- Goudie, A.S., Middleton, N.J., (2006) Desert dust in the Global system. Springer, printed in Germany, pp. 157-165. pp. 287.
4- Khorani, A., Tamsaki, A., Haghi-Ghbadi, S., (2013) Analysis of the Time-Spatial of dust storms in the southern and southeastern of Iran. The First International Conference on Dust Haze,Management of Factors and Consequences in Khorramabad,Iran. In Persian
5- Azizi, Q., Miri, M., Nabavi, S. O., (2012) Traction of the Phenomenon of Dust in the southwestern of Iran. Journal of Arid Regions Geographic Studies, No 7. In Persian
6- Jadideslami, M., Rahnamarad, J., Basirani, N., (2011) The origin of wind deposits in the wells of Zabol, Journal of Applied Geology, No 1. In Persian
7- Zolfaghari, Morteza., Omidi, M., Yaghobi, Y ., (2012) Investigating the environmental impacts of Meighan wetland on Arak city . 3rd national conference on combating desertification and sustainable development of Iran Desert Wetlands (Relying on Meighan Desert Wetland) . In Persian
8- Environmental Sustainability and Resources Engineers., (2006) Executive Plan of the Wind Erosion Foundation in the Desert Meighan of Arak" - Department of Natural Resources and Watershed Management of Markazi Province, No 5. In Persian
9- Hellali, J., Asadi Scoie, I., Bazrafshan, J., (2013) Zoning the number of days associated with the phenomenon of dusts in the region of Iran using the GIS. 2nd National Conference on Wind Erosion and Dust Storms. In Persian
10- Yarahmadi, D., Khoshkish, A., (2013) Zoning of the Phenomenon of Dust in the western half of Iran during the period from 1990 to 2009. Scientific Journals Management System.No31. In Persian
11- http://www.markazi.frw.org.ir/00/Fa/default.aspx
12- Ansari, A., (2015) Investigation of Factors Affecting the Condition of Air Pollution in Arak Metropolis. 1National Conference on Applied Researchs in Maintenance of Environment, Water and Natural Resources, Arak University, Iran. In Persian
13- Hossenzadeh, S.R., (1997) One Hundred and Twenty-Days Winds of Sistan". Journal of geographic research. No46.In Persian
14- Alijani, B., (1997) Iran's Weather. Payame Noor University Publishers, Tehran. In Persian