Assessment of desertification hazard in Abu Ghoveyr Plain, Dehloran, Ilam Province of Iran

Yıl 2017, Cilt: 67 Sayı: 1, 49 - 64, 01.01.2017

Zahedeh Heidarizadi , Haji Karimi Seyyed Abdolhossein Arami

https://doi.org/10.17099/jffiu.35680

Öz

Assessment of desertification hazard in Abu-Ghoveyr Plain, Dehloran, Ilam Province of Iran

Abstract: The present study aims to evaluate the desertification hazard and determine the effective criteria affecting desertification in Abu-Ghoveyr Plain in Ilam Province, using the 9 criteria Iranian Model of Desertification Potential Assessment (IMDPA). To this end, first, work units maps (geomorphologic facies) were created using slope, geology, and land use maps. Using this method, work units were considered as the main unit of desertification and a map was generated for each index according to assigned weights, such that the qualitative map of the desired criteria were obtained using the geometric mean of indicators. Then, through integration and determining the geometric mean of layers obtained from criteria and finally classification of the obtained maps, map of the current status of desertification in the studied area was prepared. The obtained results indicated that 31.67% of the area was in the medium class of desertification (II) and 68.33% belonged to the intense class (III).

Keywords: Classification, Model, Criterion, Vegetation Cover, Work Units.

İran İlam Eyaleti Dehluran Bölgesi Abu Ghoveyr Ovası'nda Çölleşme Değerlendirmesi

Özet: Bu çalışmada 9 kriter içeren İran Çölleşme Potansiyel Değerlendirme Modeli kullanılarak, Ilam Eyaleti Abu-Ghoveyr Ovası'nda çölleşme zararının değerlendirilmesi ve belirlenmesi amaçlanmıştır. Bu amaçla, öncelikle eğim, jeoloji ve arazi kullanım haritalarını içeren çalışma birim haritaları oluşturulmuştur. Bu yöntem kullanılarak, çalışma birimleri çölleşme ana ünite olarak kabul edildi ve entegrasyon ve geometrik kriterler ile elde edilen tabakaların ortalaması alınarak çalışılan alandaki çölleşme mevcut durumunun haritası hazırlanmıştır. Elde edilen sonuçlar, alanın %31.67 sinin çölleşme orta (II) sınıfta ve % 68.33ünün ise şiddetli (III) sınıfta olduğunu göstermiştir.

Anahtar Kelimeler: Sınıflandırma, Model, Ölçüt, Bitki Örtüsü, Çalışma Birimleri

Received (Geliş): 15.04.2016 - Revised (Düzeltme): 20.05.2016 -   Accepted (Kabul): 13.06.2016

Cite (Atıf): Heidarizadi, Z., Karimi, H., Arami, S.A., 2017. Assessment of desertification hazard in Abu-Ghoveyr Plain, Dehloran, Ilam Province. Journal of the Faculty of Forestry Istanbul University 67(1): 49-64. DOI: 10.17099/jffiu.35680

Ilam Eyaleti Dehluran Bölgesi Abu Ghoveyr Ovası'nda çölleşme değerlendirmesi

Öz

Assessment of desertification hazard in Abu-Ghoveyr Plain, Dehloran, Ilam Province of Iran

Abstract: The present study aims to evaluate the desertification hazard and determine the effective criteria affecting desertification in Abu-Ghoveyr Plain in Ilam Province, using the 9 criteria Iranian Model of Desertification Potential Assessment (IMDPA). To this end, first, work units maps (geomorphologic facies) were created using slope, geology, and land use maps. Using this method, work units were considered as the main unit of desertification and a map was generated for each index according to assigned weights, such that the qualitative map of the desired criteria were obtained using the geometric mean of indicators. Then, through integration and determining the geometric mean of layers obtained from criteria and finally classification of the obtained maps, map of the current status of desertification in the studied area was prepared. The obtained results indicated that 31.67% of the area was in the medium class of desertification (II) and 68.33% belonged to the intense class (III).

Keywords: Classification, Model, Criterion, Vegetation Cover, Work Units.

İran İlam Eyaleti Dehluran Bölgesi Abu Ghoveyr Ovası'nda Çölleşme Değerlendirilmesi

Özet: Bu çalışmada 9 kriter içeren İran Çölleşme Potansiyel Değerlendirme Modeli kullanılarak, Ilam Eyaleti Abu-Ghoveyr Ovası'nda çölleşme zararının değerlendirilmesi ve belirlenmesi amaçlanmıştır. Bu amaçla, öncelikle eğim, jeoloji ve arazi kullanım haritalarını içeren çalışma birim haritaları oluşturulmuştur. Bu yöntem kullanılarak, çalışma birimleri çölleşme ana ünite olarak kabul edildi ve entegrasyon ve geometrik kriterler ile elde edilen tabakaların ortalaması alınarak çalışılan alandaki çölleşme mevcut durumunun haritası hazırlanmıştır. Elde edilen sonuçlar, alanın %31.67 sinin çölleşme orta (II) sınıfta ve % 68.33ünün ise şiddetli (III) sınıfta olduğunu göstermiştir.

Anahtar Kelimeler: Sınıflandırma, Model, Ölçüt, Bitki Örtüsü, Çalışma Birimleri

Received (Geliş): 15.04.2016 - Revised (Düzeltme): 20.05.2016 -   Accepted (Kabul): 13.06.2016

Cite (Atıf): Heidarizadi, Z., Karimi, H., Arami, S.A., 2017. Assessment of desertification hazard in Abu-Ghoveyr Plain, Dehloran, Ilam Province. Journal of the Faculty of Forestry Istanbul University 67(1): 49-64. DOI: 10.17099/jffiu.35680

Kaynakça

• Abdy, J., 2007. Application of IMDPA model for desertification study in Abuzaidabad. M.Sc. Thesis, University of Tehran.
• Arami, A., 2014. Assessment of desertification hazard by using the 9 criteria IMDPA model in Semi-arid Agh-Band region, Golestan Province. Journal of Water and Soil Conservation 21(2): 153-172.
• Dolatshahi, R., 2008. Preparing a Desertification Map based on IMDPA model with emphasis on water, soil, vegetation cover, (case study south of Garmsal). M.Sc. Thesis, Faculty of Natural Resources, University of Tehran.
• Ekhtesasi, M., Sepehr, A., 2011. Methods and models of assessment and mapping of desertification, Yazd University press, first edition, 286 pages.
• Esfandyari, M., Hakimzadeh, M.A., 2010., Assessment of current desertification, with emphasis on soil degradation, based on IMDPA model, Iranian Journal of Range and Desert Research 17(4): 631-624.
• Farajzadeh, M., Nik Eghbal, M., 2007. Evaluation of MEDALUS model for desertification hazard zonation using GIS. Pakistan Journal of Biological Sciences 10(16): 2622-2630.
• Jafaizade, M., 2008. Assessment the current Desertification using IMDPA Model, M.Sc Thesis, Faculty of Natural Resources, University of Tehran. 181 pages.
• Khosravi, H., Zehtabian, Gh., Ahmadi, H., Azarnivand, H., 2011. Determination of Desertification Severity in Kashan Region Using IMDPA Model, 6th International GIAN Symposium-cum- workshop protection and utilization. University of Tehran, Iran.
• Lavazzo. P., Terracciano, S., Topa, M.E., Adamo, P., Coly, A., De Paola, F., Giordano, S., Giugni, M., Traoré, S.E., 2013. The role of climate change and erosion processes in desertification process in a sub-Saharan peri-urban area (Ouagadougou, Burkina Faso). Geophysical Research Abstracts Vol. 15.
• Mohamadi, A.R., 2014. Process Evaluation and Prediction of Mehran Plain Desertification Using Neural Networks, M.Sc. Thesis, Faculty of Natural Resources, University of Ilam, Iran.
• Mombeni, M., 2013. Assessment of the current desertification of Dashte Abbas Using IMDPA Model, M.Sc Thesis, Faculty of Natural Resources, University of Ilam, Iran.
• Rahimi, T., Shahriyari, A., Pahlevanroy, A., Zaboli, M., Yari, A., 2011. Classification of Desertification Intensity. National Conference on Combat Desertification and the Sustainable Development Of Desert Wetlands Iran. Azad Arak.
• Tavares, J., 2012. Assessment and mapping of desertification sensitivity in an insular sahelian mountain. Geophysical Research Abstracts Vol. 14.
• UNEP, 1997. Word Atlas of Desertification. John Wiley and Sons, Inc, and Arnold (second edition), 182p., New York and London.
• Zakerinezhad, R., Masoudi, M., Falahshamsi, S., Afzali, S., 2012. Assessment of desertification using ground water criteria and GIS (Case study: Zarin Dasht Fars). Irrigation and Water Engineering 2(7): 1-10.
• Zolfaqari, F., Shahriyari A., Fakhireh A., Rashki A., Noori S., Khosravi, H., 2010. Evaluation the effects of soil and wind erosion in Sistan desertification using GIS. Geomatics Conference.
• Zolfaqari, F., Shahriyari A., Fakhireh A., Rashki A., Noori S. and Khosravi H (2011), The Assessment of desertification severity in Sistan plain using IMDPA model. Watershed Management Researches 91:97-107.