Analysis of Statistical Characteristics of Droughts in China from 1949 to 2005
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Abstract:
An analysis is made of the characteristics of the spatialtemporal distribution of droughts and the change tendency based on statistical data of droughts in China in the last 60 years. The results indicate that the droughtattacked areas, droughtinundated area, and economic loss showed an increasing trend in the past 60 years, and the frequency of droughts also increased. Northwest China, North China, and Mongolia are severe droughtattacked regions, and Mongolia, Shan’xi, Shaanxi, Ningxia, Jilin are the most severe droughtattacked provinces. The fractal characteristics of drought disasters in the time series are studied, based on the fractal dimension theory, with the fractal dimension of drought in China being 1.73, which means that a severe flood disaster is a chaotic system.
