摘要
为给出Ｐｅｎｍａｎ－Ｍｏｎｔｅｉｔｈ公式中冠层总气孔阻力的理论解，首先建立了植物群落中的光分布模式，并进而给出光合作用与呼吸作用模式，在此基础上进行温度订正，确定出由光、温因子所决定的整个群落任一时刻的净光合作用速率，由此结合ＢＷＢ气孔阻力子模型即可确定出冠层总气孔阻力．利用中国科学院禹城综合试验站Ｌｙｓｉｍｅｔｅｒ等联合观测资料，对模型进行了验证，结果表明：改进的包容环境因子的Ｐｅｎｍａｎ－Ｍｏｎｔｅｉｔｈ公式平均模拟误差４．３％左右。
The stomatal resistance of the whole layer of community is the most difficult variable to determine in the Penman-Monteith Formula,a properly way was given to resolve this problem in this paper.The submodel used for simulating the photosythetic in the community was first given,then the BWB submodel was used to identified the stomatal resistance of the whole layer of the community.Using the data observed by Lysimeter et al. in the Yu Cheng Comprehensive Experiment Site of the Academy of Sciences to validate the model,the result shown that the mean errors of this model is only about 4.3% or so.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1998年第3期359-364,共6页
Journal of Nanjing University（Natural Science）
基金
中国科学院禹城综合试验站开放课题
