摘要
利用辽阳气象站近50年的气象资料,分析出降水量年际变化较大,降水量变化有逐渐减少的趋势,有出现旱灾的趋势;运用Z指数法对辽阳市的旱涝等级进行评定。利用湿润系数分析得出该区夏季气候较湿润,春季大气比较旱;各季降水量分配不均、蒸发量大、温度高是造成辽阳市旱涝灾害的主要原因。
This paper used nearly 50 years meteorological data in Liaoyang.The variety of precipitation regulation was analyzed,features of annual precipitation change lager,the change tendency of precipitation reduced a little,and it will be drought.Evaluate the grades of flood/drought of using Z index.The coefficients of humidity during four seasons analysis that climate was humid in summer and drought in spring.Drought and flood disaster mainly were created by the uneven precipitation assignment in every season,maximum evaporation and high temperature.
出处
《吉林农业科技学院学报》
2010年第3期45-47,共3页
Journal of Jilin Agricultural Science and Technology University
关键词
降雨量
旱涝特征
湿润系数
precipitation
drought-flood feature
coefficient of humidity
