摘要
根据湖北省20个测站1977—2007年的气象资料,应用Penman-Monteith公式计算了31年的逐日ET0。应用GIS技术和统计检验方法分析了参考作物蒸腾量的时空变异特征和气象因子对ET0的影响。结果表明,湖北省参考作物蒸腾量的空间分布呈西低东高的特征;随多年时间变化空间分布趋于均匀;年内ET0值分布以7、8月最高,12、1月最低;影响ET0的主要气象因子为风速,平均温度次之。
Based on the meteorological data of 20 stations in Hubei province from 1977 to 2007, Penman- Monteith Formula was used to calculate the daily reference crop evapotranspiration （ETo） in 31 years. GIS and statistical method were applied to analyse the spatial and temporal variation characteristics of the refer- ence crop evapotranspiration and the effect of meteorological factors on ET0. The results showed that, spatial distribution characteristics of the reference crop evapotranspiration in Hubei province were low in the east and high in the west, spatial distribution tended to be uniform with the change of time; ETo in Ju- ly and August was the highest while ETo in December and January was the lowest . Main meteorological factors of ETo were wind speed and average temperature.
出处
《灌溉排水学报》
CSCD
北大核心
2013年第3期6-10,共5页
Journal of Irrigation and Drainage
基金
国家科技支撑计划项目(2012BAD08B05)
国家自然科学基金项目(50679068)
国家科技重大专项项目(2012ZX07205005)
关键词
参考作物蒸腾量
湖北省
时空变异特征
气象因子
reference crop evapotranspiration
Hubei province
temporal and spatial variation characteris- tics
meteorological factors
