Spatio-temporal characteristics of agricultural drought in Shaanxi Province, China based on integrated disaster risk index

doi:10.13287/j.1001-9332.201610.040

Abstract

Abstract: With the change of climate, agricultural drought has directly threatened the food security. Based on the natural disaster risk theory, we analyzed the spatial and temporal characteristics of agricultural drought in Shanxi Province from 2009 to 2013. Four risk factors (hazard, exposure, vulnerability, and drought resistance ability) were selected with the consideration of influence factors of drought disasters. Subsequently, the index weight was determined by the analytic hierarchy process (AHP) and the aggregative indicator of natural disaster risk was established. The results showed that during the study period, the agricultural drought risk slightly declined in the northern Shaanxi, but increased sharply in the southern Shaanxi, especially in Shangluo City. While for the central part of Shaanxi Province, it maintained good stability, which was the highest in Xianyang City and the lowest in Xi’an City. Generally, the agricultural drought risk in Shaanxi Province gradually increased from south to north.

HE Bin, WANG Quan-jiu, WU Di, ZHOU Bei-bei. Spatio-temporal characteristics of agricultural drought in Shaanxi Province, China based on integrated disaster risk index[J]. Chinese Journal of Applied Ecology, 2016, 27(10): 3299-3306.

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