甘肃省和政县主要气象灾害特征分析

Analysis on Characteristics of Main Meteorological Disasters in Hezheng County of Gansu Province

利用甘肃省和政站1983—2012年气象资料,分析了和政冰雹、大(暴)雨、干旱与低温冻害的时间演变特征。结果表明,冰雹总体上呈减少趋势;大(暴)雨呈明显的增长趋势;低温冻害呈"前升后降"型分布;干旱呈小幅增长趋势。从近10年直接经济损失来看,暴洪灾害已跃居和政县气象灾害之首,直接经济损失占10年总损失的36%,其次是低温冻害、冰雹和干旱。

The time evolution character- istics of hail, big （storm） rain, drought, low-temperature damage and freezing in Hezheng County of Gansu Province were analyzed, by using meteorological data of Hezheng weather stations in Gansu Province from 1983 to 2012.The results showed that hail showed decreasing trend overall. Big （storm） rain showed a significant growth trend. Low-temperature damage were ＂Front-up-down＂ distribution. Drought showed a slight growth trend. Seeing from direct economic losses of nearly 10 years, the flash flood disasters had leapt to the first meteorological disasters in Hezheng County, and the direct economic losses accounted for 36% of the total loss in 10 years.Then, followed by low-temperature damage, hail and drought.