Based on observed data at 23 stations in Ningxia from 1981 to 2010, the characteristics of drought disasters-causing factors were analyzed from drought days, drought range, frequency of droughts and drought intensity by using the meteorological drought composite index, and risk assessment of disasters-causing factors and regionalization were completed. The results showed that: In recent 30 years, drought days, drought range, frequency of droughts and drought intensity all have increasing trends; the risk of drought disasters-causing factors have an increasing trend from south to north; Maximum risk index of drought disasters-causing factors is 0.94, and the minimum is 0.1. Most of region is in the lower risk area in the southern, and most of region is in the higher risk area in the northern.
LI Hongying
,
ZHANG Xiaoyu
,
WANG Jing
,
ZHENG Guangfen
,
WANG Suyan
. Analysis of Drought Disasters-Causing Factors in Ningxia Based on CI Index[J]. Plateau Meteorology, 2014
, 33(4)
: 995
-1001
.
DOI: 10.7522/j.issn.1000-0534.2013.00043
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