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《Journal of Anhui Agricultural Sciences》 2011-11
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Calculations and Predigestion of the Main Parameters in Penman-Monteith Model

LU Xin-jian et al(Henan Building Materials Research & Design Institute Co.,Ltd.,Zhengzhou,Henan 450008)  
The value of extinction coefficient(k) and leaf area index(LAI) was proved to have no effects on the result of corrected Penman-Monteith model by mathematic methods.The influence of K and LAI on evaporation speed was embodied in the canopy intercepted net radia-tion(Rnl).Canopy integral stomatic resistance(rst) calculated by the results of sap flow meter could be used for transpiration simulating.Inaddition,it contained all the errors of other parameters and was seen as an modification for these errors.Therefore,it’s the most important pa-rameter for the accuracy of Penman-Monteith model.
【CateGory Index】: S715.4
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