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当前位置: 首页 > 文章 > 白银市干旱气候特征 干旱地区农业研究 2002,20 (4) 96-100
Position: Home > Articles > The features of arid climate in Baiyin Agricultural Research in the Arid Areas 2002,20 (4) 96-100

白银市干旱气候特征

作  者：
陈少勇;李逢春;曹治国;滕兴海
单  位：
白银市气象局
关键词：
春旱;春末夏初旱;伏旱;秋旱;气候
摘  要：
利用1957～2000年44a的降水资料,计算了"四旱"干旱指数,进一步分析了各旱段干旱的气候特征。结果表明:白银全市每年都有干旱发生,即每年至少有一站发生某一干旱;北片发生频率比南片多出约1倍,在4个旱段中,春旱频率最高,春末夏初旱次之,干旱频率从南至北增加;南、北片90%的年份降水偏差一致,但南片的降水比北片多1倍且稳定性较好。
译  名：
The features of arid climate in Baiyin
作  者：
CHEN Shaoyong, LI Fengchun, CAO Zhiguo, TENG Xinghai(Baiyin Meteorological Office, Baiyin, Gansu 730900, China)
关键词：
spring drought; drought of the late spring and early summer; drought of hot summer days; autumn drought; climate
摘  要：
With the aid of the observational data from 1957 to 2000, the research is conducted to calculate drought index of four periods, analyse the climate features of every period in Baiyin. The result shows that the drought in Baiyin happens every year, at least one kind of drought happening in one area. The frequency of drought happening in the north area is twice as that in the south area. In the four kinds of dry periods, spring drought takes the first in frequency, next being the drought of late spring and early summer, and the frequency of drought increases from the south to the north. The dispersion of annual precipitation in the south area is identical with that in the north area in 90 percent of years, but the precipitation in the south area is twice of that in the north area, and the stability is better.\;

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