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. Iran Ilam Eyaleti Dehluran Bolgesi Abu Ghoveyr Ovasi'nda Collesme Degerlendirilmesi Ozet:  Bu calismada 9 kriter iceren Iran Collesme Potansiyel Degerlendirme Modeli kullanilarak, Ilam Eyaleti Abu-Ghoveyr Ovasi'nda collesme zararinin degerlendirilmesi ve belirlenmesi amaclanmistir. Bu amacla, oncelikle egim, jeoloji ve arazi kullanim haritalarini iceren calisma birim haritalari olusturulmustur. Bu yontem kullanilarak, calisma birimleri collesme ana unite olarak kabul edildi ve entegrasyon ve geometrik kriterler ile elde edilen tabakalarin ortalamasi alinarak calisilan alandaki collesme mevcut durumunun haritasi hazirlanmistir. Elde edilen sonuclar, alanin %31.67 sinin collesme orta (II) sinifta ve % 68.33unun ise siddetli (III) sinifta oldugunu gostermistir. Anahtar Kelimeler:  Siniflandirma, Model, Olcut, Bitki Ortusu, Calisma Birimleri Received (Gelis):  15.04.2016 -  Revised (Duzeltme):  20.05.2016 - Accepted (Kabul):  13.06.2016 Cite (Atif):  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