QUANTITATIVE ASSESSMENT OF CURRENT DESERTIFICATION USING MEDALUS MODEL (CASE STUDY: SEGZI PLAIN)

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KHANAMANI A.; KARIMZADEH H.R.; GOLSHAHI A.

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Paper Information

Journal: Journal of RS and GIS for Natural Resources Year:2013 | Volume:4 | Issue:1 Page(s): 13-25

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Title

QUANTITATIVE ASSESSMENT OF CURRENT DESERTIFICATION USING MEDALUS MODEL (CASE STUDY: SEGZI PLAIN)

Author(s)

KHANAMANI A. | KARIMZADEH H.R. | GOLSHAHI A. | Issue Writer Certificate

Keywords

MEDALUS DESERTIFICATION GEOGRAPHIC INFORMATION SYSTEM SEGZI PLAINQ3

Abstract

The purpose of this study was to have a quantitative evaluation of current desertification status in Segzi plain of Isfahan using MEDALUS model. To achieve this purpose 6 important criteria, which were effective on desertification have been selected. These criteria are: soil quality, climate, vegetation, underground water, erosion, management and policy. Each one of these criteria has numerous indicators. Each indicator data after statistical analyses and normality test with the Kolmogorov-Smirnov test has been imported to ArcGIS®9.3 and interpolated with IDW and normal and discrete kriging methods to produce their maps. Methods with highest accuracy have been selected. Then, the maps scored by MEDALUS approach and final map of each criterion have been created from the geometrical mean of its indicators. Finally current desertification status in Segzi plain of Isfahan has been created from the geometrical mean of all 6 criteria. The results showed that 81299 ha of the region classified in severe desertification class and 30868 ha classified as a very severe desertification class. Weighted average of the quantity desertification (current desertification) for the Segzi plain is equal DS=153.32 ha classified as a severe desertification class. The results also showed that climate and plant cover criteria are the most important criteria of desertification in the study area and erosion criterion (wind and water erosion) has the minimum importance.

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References

EVALUATION OF MEDALUS MODEL FOR DESERTIFICATION HAZARD ZONATION USING GIS; STUDY AREA: IYZAD KHAST PLAIN, IRAN

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APA: Copy

KHANAMANI, A., KARIMZADEH, H.R., & GOLSHAHI, A.. (2013). QUANTITATIVE ASSESSMENT OF CURRENT DESERTIFICATION USING MEDALUS MODEL (CASE STUDY: SEGZI PLAIN). JOURNAL OF RS AND GIS FOR NATURAL RESOURCES (JOURNAL OF APPLIED RS AND GIS TECHNIQUES IN NATURAL RESOURCE SCIENCE), 4(1), 13-25. SID. https://sid.ir/paper/189601/en

Vancouver: Copy

KHANAMANI A., KARIMZADEH H.R., GOLSHAHI A.. QUANTITATIVE ASSESSMENT OF CURRENT DESERTIFICATION USING MEDALUS MODEL (CASE STUDY: SEGZI PLAIN). JOURNAL OF RS AND GIS FOR NATURAL RESOURCES (JOURNAL OF APPLIED RS AND GIS TECHNIQUES IN NATURAL RESOURCE SCIENCE)[Internet]. 2013;4(1):13-25. Available from: https://sid.ir/paper/189601/en

IEEE: Copy

A. KHANAMANI, H.R. KARIMZADEH, and A. GOLSHAHI, “QUANTITATIVE ASSESSMENT OF CURRENT DESERTIFICATION USING MEDALUS MODEL (CASE STUDY: SEGZI PLAIN),” JOURNAL OF RS AND GIS FOR NATURAL RESOURCES (JOURNAL OF APPLIED RS AND GIS TECHNIQUES IN NATURAL RESOURCE SCIENCE), vol. 4, no. 1, pp. 13–25, 2013, [Online]. Available: https://sid.ir/paper/189601/en

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