摘要
利用抚顺市50个乡镇(站点)48年(1961～2008)逐月的降水量资料,采用Z指数法计算出了抚顺、清原、新宾三县的旱涝指标,分析了抚顺市旱涝出现的地理和季节分布特征,讨论了旱涝对粮食产量的影响。结果表明,自1961年以来抚顺地区出现的7个粮食欠收年,有4年是由连季旱或涝引起的,2年由年度干旱引起,1年由夏季洪涝引起。
Based on monthly precipitation data during 1961-2008 in 50 stations in Fushun,drought and flood indicators of three counties were calculated with Z index method. The geographical and seasonal distribution characteristics of Fushun were analyzed,and so was the impact of droughts and floods on food production. It shows that,since 1961,there are 7 poor harvest years in Fushun,with quadrennial caused by continuous seasonal floods or droughts,two years by year drought,one year by summer flood.
基金
Supported by Fushun Government Financed Subject(20071209)
关键词
旱涝指标
粮食产量
Z指数
连季旱涝
Drought and flood indicators
Food production
Z index
Droughts or floods in continuous seasons
China
