The Impact of Change of Climate Factors on the Reference Evapotranspiration in Dongjiang River Basin
Abstract：Based on the monthly historical climate dataset from 1961—2005 of Dongjiang River Basin,the impact of change of climatic factors on reference evapotranspiration（ET0） are analyzed using average impact advanced this article and numeral experimentation absenting climatic factors.Results showed that the average impact of sunlight radiation was the most,followed by relative humidity,air temperature and wind speed.The average impact of sunlight radiation was much larger than that of air temperature and relative humidity in summer.Though the average impact of sunlight radiation was the most,the difference with that of air temperature and relative humidity decrease in winter.The effect estimating ET0 with relative climatic factors and relative sensitivity coefficients was better in summer than in winter.The effect estimating ET0 weakens with decrease of the number of climatic factors,it slightly weakens in Summer,strongly weakens in Winter and Spring.The main climatic factor that impact on reference evapotranspiration is sunlight radiation in Summer,that is sunlight radiation,relative humidity.
Keywords：reference evapotranspirationsensitivity coefficientclimate factorsDongjiang River Basin
Publication Date：2011-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)