Analysis of desertification changes with emphasis on precipitation in Qom province

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Halbiaan Amir Hosein; Jamshidian Zohreh

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Journal: EMERGENCY MANAGEMENT Year:2019 | Volume:7 | Issue:14 Page(s): 105-119

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Title

Analysis of desertification changes with emphasis on precipitation in Qom province

Author(s)

Halbiaan Amir Hosein | Jamshidian Zohreh | Issue Writer Certificate

Keywords

DesertificationQ1

Fuzzy ARTMAPQ1

Remote SensingQ2

Multilayer Perceptron(MLP)Q1

PrecipitationQ2

QomQ2

Abstract

Desertification after climate changes and deficiency of fresh water is the third important global challenge during the 21st century. This phenomenon is the consequence of a series of processes in which climate change and human activities are more important factors than others. Therefore, recognition and assessment of the Desertification trend are very important issues for better region management. Hence, the aim of this study is the assessment of Desertification changes in Qom province using Landsat satellite images, TM5 and LCDM8 sensors in(1984-2013) with emphasis on the Precipitation. Indicators used in this study are Normalized Difference Vegetation Index (NDVI) and Soil Salinity Index (s1, s2, s3). According to Fuzzy ARTMAP method, the land use during the period of (1984-2013) recognized and the land use changes were evaluated based on the Multilayer Perceptron Neural Network (MLP) Model in software TERRSET. To study the effect of Precipitation on Desertification, the monthly data of GPCC have been used and the spatial-temporal trend of annual Precipitation was evaluated using the Mann-Kendall nonparametric test at 0. 95 level of significance. The results showed that the salinity and the desert lands have been increased relative to the first year of study period from 3% to 18% and about 15% growth. The vegetation has arrived from 7% to 2% that about was reduced 5%. The greatest increase of saline land is seen in the western part of Qom, which replaces the vegetation. The increasing amount in saline and desert lands is about 1751 km2. Study of land use changes illustrated that saline lands and city are growing whereas vegetation, Sultan-Houz Lake, Salt Lake, and arid lands are reducing. The analysis of Precipitation spatial-temporal trend revealed a decreasing trend on annual time series at the 0. 95 level of significance. Obtained results provide a basis for better recognition and proper combating Desertification in the studied region.

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APA: Copy

Halbiaan, Amir Hosein, & Jamshidian, Zohreh. (2019). Analysis of desertification changes with emphasis on precipitation in Qom province. EMERGENCY MANAGEMENT, 7(14 ), 105-119. SID. https://sid.ir/paper/389658/en

Vancouver: Copy

Halbiaan Amir Hosein, Jamshidian Zohreh. Analysis of desertification changes with emphasis on precipitation in Qom province. EMERGENCY MANAGEMENT[Internet]. 2019;7(14 ):105-119. Available from: https://sid.ir/paper/389658/en

IEEE: Copy

Amir Hosein Halbiaan, and Zohreh Jamshidian, “Analysis of desertification changes with emphasis on precipitation in Qom province,” EMERGENCY MANAGEMENT, vol. 7, no. 14 , pp. 105–119, 2019, [Online]. Available: https://sid.ir/paper/389658/en

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