The Reference Crop Evapotranspiration Estimation Based on Fractal Theory
ZHAN Guo-long
MA Xiao-yi
LIU Ji-long
LV Jing-wei
Abstract：According to the meteorological data and geographical parameters in 1954～2000,establishing a model of the radiation and temperature calculation based on fractal theory from the angle of further reveals that the relationship between temperature and radiation characteristics,combining Penman-Monteith model for reference crop the evapotranspiration (ET_0) estimated.Temperature(T)、net radiation (R_n) and net shortwave radiation (Q_(ns)) no-scaling regions and the boundary point of fractal dimension is close,with similar fractal characteristics,T estimate R_n and Q_(ns),Through T estimate R_n calculated ET_0 s mean absolute error and the average relative error less than,by estimating Q_(ns) calculated ET_0s mean absolute error and the average relative error,and deviation smaller.Therefore,in actual applications T can be used to estimate R_n,calculate ET_0,simplify the calculation process.
Keywords：temperatureradiationtrend analysisfractal dimension
Publication Date：2010-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 11-14 )