Study on spatiotemporal change of potential evapotranspiratio in Shiyang River Basin for 30 years
Based on the meteorological data from 10 meteorological stations in Shiyang River Basin 1980-2010, using Penman-Monteith equation to calculate potential evapotranspiration, Shiyang River potential evapotranspiration distribution map is given by using Kriging spatial interpolation method in ArcGIS.The results show that the average spatial distribution pattern of potential evapotranspiration are influenced by climate, topography and other factors in Shiyang River Basin in recent 30 years, potential evapotranspiration are gradually increasing from the southwest to the northeast, it has obvious difference.On timing variation of annual potential evapotranspiration in Shiyang River Basin from 1980-2010, the overall trend is relatively stable, the seasonal changes are spring >summer>autumn>winter.
Shiyang River Basinpotential evapotranspirationPenman-Monteith equationKrigingspatial-temporal pattern
国家科技期刊平台
NSTL
万方数据
维普
