1960～2010年宜良县降雨量和蒸发量变化特征分析
Analysis on the Change of Rainfall and Evaporation in Yiliang County during 1960-2010
王一鸣 1王芳芳2
作者信息
- 1. 云南省石林县气象局,云南石林652100
- 2. 云南省蒙自市气象局,云南红河661100
- 折叠
摘要
利用宜良县1960～2010年的年降水量和小型蒸发量资料,采用线性趋势、干燥度等统计学方法,分析近51年宜良县降雨量和蒸发量的变化特征.结果表明,1960～ 2010年宜良县降雨量和蒸发量均在逐年减小,特别是21世纪以来降雨量和蒸发量均减少,可利用水资源较少.宜良县降雨主要集中在5～10月,蒸发主要集中在3～9月,其中3～5月降雨量较少,而蒸发对水的消耗比较明显,气候比较干燥,容易发生春旱;10 ～11月蒸发对水的消耗比较小,而这个阶段降水也比较少,也容易发生秋旱.
Abstract
According to the data of precipitation and evaporation in Yiliang County during 1960-2010,using linear trend and dryness degree method,the variation characteristics of rainfall and evaporation in Yiliang County in recent 51 years were analyzed.The results showed that the precipitation and evaporation was decreased year by year,especially since twenty-first century,the amount of rainfall and evaporation were reduced,the avaiable water resources were less.Rainfall mainly concentrated during May-Oct.,evaporation mainly concentrated during Mar.-Sep.,among which,rainfall during Mar.-May was less,and evaporation of water consumption was obvious,the climate was relatively dry and was prone to appear spring drought;evaporation of water consumption was relatively small during Oct.-Nov.,and the precipitation was less and was also prone to appear drought in autumn.
关键词
降雨量/蒸发量/变化特征/线性趋势/干燥度Key words
Rainfall/Evaporation/Variation characteristics/Linear trend/Dryness引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据