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Sensitivity Assessment to the Occurrence of Different Types of Droughts Using GIS and AHP Techniques
Water Resources Management ( IF 4.3 ) Pub Date : 2021-07-12 , DOI: 10.1007/s11269-021-02906-3
Abdol Rassoul Zarei 1 , Mohammad Mehdi Moghimi 2 , Elham Koohi 2
Affiliation  

In this study, using Analytic Hierarchy Process (AHP) and Geographic Information System (GIS), the sensitivity to the occurrence of different types of droughts including meteorological drought (Med), hydrological drought (Hyd), and agricultural drought (Agd) were evaluated. In this research, at first, some of the effective indicators in each type of droughts were selected (four indicators in Med, three indicators in Hyd, and seven indicators in Agd), then using the ArcGIS 10.3 software, the sensitivity map of drought for each indicator were prepared (all indicators classified in four classes including mild, moderate, severe, and very severe). Then, using the AHP method the weight of each indicator in each type of droughts was determined and the final map of drought sensitivity for different types of droughts was prepared by superposition the maps of effective indicators in each drought. The final map of drought sensitivity was prepared by superposition the Med, Hyd, and Agd sensitivity maps (after determining the weight of each using AHP). In the Med, 43.29% of the study area (Fars province, Iran) was classified in the moderate class of drought sensitivity and 56.71% in the severe class. In the Hyd, 0.46%, 33.25%, 62.49%, and 3.80% of the study area were classified in the mild, moderate, severe, and very severe classes (respectively), and in the Agd, 1.18%, 50.23%, and 48.59% of the study area were classified in the mild, moderate, and severe classes. The results showed that in final drought sensitivity, the Med with a weight equal to 0.36 was the most effective variable, and based on the final map, 38.26% and 61.74% of the study area were classified in the moderate and severe classes of drought sensitivity.



中文翻译:

使用 GIS 和 AHP 技术对不同类型干旱发生的敏感性评估

本研究利用层次分析法(AHP)和地理信息系统(GIS),评估了气象干旱(Med)、水文干旱(Hyd)和农业干旱(Agd)等不同类型干旱发生的敏感性。 . 本研究首先选取各类干旱的部分有效指标(Med 4 个指标、Hyd 指标3 个、Agd 指标7 个),然后利用ArcGIS 10.3 软件绘制干旱敏感度图。准备了每个指标(所有指标分为轻度、中度、重度和极重度四类)。然后,采用层次分析法确定各干旱类型各指标的权重,通过叠加各干旱有效指标图,得到不同类型干旱的最终干旱敏感性图。干旱敏感性的最终图是通过叠加 Med、Hyd 和 Agd 敏感性图(在使用 AHP 确定每个的权重后)来制备的。在地中海地区,43.29% 的研究区域(伊朗法尔斯省)属于中等干旱敏感性等级,56.71% 属于严重干旱等级。在 Hyd 中,0.46%、33.25%、62.49% 和 3.80% 的研究区域被划分为轻度、中度、重度和非常严重等级(分别),而在 Agd 中,1.18%、50.23% 和48.59%的研究区域被划分为轻度、中度和重度等级。

更新日期:2021-07-12
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