摘要
利用广西地区2009-2010年20个气象站逐日气温和降水资料,计算逐月帕默尔指数(PDSI)和标准化降雨指数(SPI)。采用ANUSPLIN插值软件对降雨、气温和两种指数的空间分布进行差值分析,并分析了降雨量和温度对干旱指数的影响。研究表明,降雨量的大小和温度的高低影响着该地区干旱过程,在两种干旱指数中,PDSI指数更加符合广西的实际情况,更适合于广西地区的干旱评估。
Based on daily temperature and precipitation data from 2009 to 2010 in Guangxi. The Palmer drought severity index（ PDSI） and standardized precipitation index（ SPI） of the 20 stations were calculated by monthly. The spatial distribution of precipitation,temperature and two indexes were analysed by ANUSPLIN software,and analysed the effect of drought indexes by precipitation and temperature. The study shows that the drought process was effected by precipitation and temperature,between the two kind of drought indexes,PDSI was more according to the practical of situation,and more suitable to assess the drought for the area.
出处
《水利科技与经济》
2015年第4期8-11,共4页
Water Conservancy Science and Technology and Economy
