灌溉排水学报2011，Vol.30Issue(6)：20-24,5.
宁夏近59年参考作物腾发量时空变化特征分析
Spatiotemporal Variability of Reference Evapotranspiration over the Ningxia Province in the Last 59 Years
摘要
Abstract
Based on the monthly meteorological measurements of 10 meteorological stations in Ningxia Province from 1951 to 2009, the monthly reference evapotranspiration（ET0） and yearly ETo are estimated using the Penman-Monteith equation. The characteristics of evapotranspiration on the spatial-temporal variability and trend are analyzed by Kriging method, Mann-Kendall test and climatic trend coefficient method. Results indicate that： In Ningxia, the annual ETo is induces from north to south generally, and the average of multi-years was 982.90 mm/a. There was the maximum value in June, 149.33 ram/month, and the period of ETo mostly from May to July, the ratio is 44%. The variability coefficient was small, so shake of ETo for inter-annual is not very sharply. The values of ETo were bigger in 1950s and induced in 1960s, but increased significantly since 1990s. The ETo have the max value in summer, it was occupied annual about 41.7%, but, the winter is the smallest, 8.89%. The anomaly decades of ETo were negative values from 1960s to 1980s,but have an positive value since 1990s and there were 5 to 9 years appears positive in every decades. The serial of ETo taking 1958, 1995 and 2000 as turning points. In the future, the value of ETo will increase significantly by, 60% stations passed significant test, P=0.01. The increase range is 6.22-50.15 mm/（10a） and induces from north to south generally.关键词
ETo/时空变化/Penman-Monteith/宁夏Key words
ETo/spatiotemporal variability/Penman-Monteith/Ningxia分类
农业科技引用本文复制引用
汤英,徐利岗,杜历,龙训建..宁夏近59年参考作物腾发量时空变化特征分析[J].灌溉排水学报,2011,30(6):20-24,5.基金项目
宁夏回族自治区自然科学基金项目(NZ10214,Z10215) （NZ10214,Z10215）
国家科技支撑计划项目(2011BAD29B07) （2011BAD29B07）
