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

Abstract

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

Abstract

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

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