摘要
为评估不同模型模拟冬小麦气孔导度的适用性,从常用的Jarvis模型和Ball-Berry模型中分别选择两种,根据试验资料估算模型参数,并对模型预测效果进行检验和比较。结果表明:运用Jarvis模型1、Jarvis模型2、Ball-Berry模型1和Ball-Berry模型2预测冬小麦气孔导度时预测值与实测值之间的相关系数分别为0.854、0.777、0.751、0.784,均方根误差分别为0.149、0.247、0.183、0.169mol.m-2.s-1,据此可确定4种模型的预测精度为Jarvis模型1>Ball-Berry模型2>Ball-Berry模型1>Jarvis模型2。研究结果可为现有的基于Jarvis模型和Ball-Berry模型的农田蒸散、陆面过程和生态系统模型提供参考。
To evaluate the applicability of four common-used stomatal conductance models for winter wheat,parameters of two Ball-Berry models and two Jarvis models were determined using experimental data.Then the four models were validated and compared.Results showed that the correlation coefficients between predicted and observed stomatal conductance for Jarvis model 1,Jarvis model 2,Ball-Berry model 1 and Ball-Berry model 2 were 0.854,0.777,0.751,0.784,respectively.The corresponding root mean squared error（RMSE） for the four models were 0.149,0.247,0.183,0.169 mol·m^-2·s^-1,respectively.Based on these results,it was concluded that the prediction accuracy of the four models were in order of Jarvis model 1 Ball-Berry model 2Ball-Berry model 1Jarvis model 2.The results of this study were expected to provide references for simulation of field evapotranspiration,land surface process and ecosystem.
出处
《中国农业气象》
CSCD
2011年第1期106-110,共5页
Chinese Journal of Agrometeorology
基金
国家自然科学基金(40871151)
