禹城地区陆气相互作用耦合模式和观测研究

论述了陆气相互作用研究在人类生存环境与发展区域经济中的重要意义与研究现状。在原有研究工作基础上，针对中国科学院禹试验城站地区麦田陆气水热传输过程，提出了一个多层陆气耦合模式。对植被内部湍流交换的物理过程作了深入研究，特别考虑了叶片气孔为非饱和水汽条件下的交换情况，并且给出了修正后的根系吸水模式。陆气耦俣模式分别对大气、植被、土壤作多层划分，以助于细致了解沿高度分布的各种物理量。利用本模式对中国科学

Land-atmosphere interaction model and observation in Yucheng county

We have elucidated the importance of investigation on land surface atmosphere interaction for human's living environment protection and local economics development as well as its present state of the art.Based on the previous work,a coupling micrometeorological model for SPAC system over wheat fields in the North China Plain is presented.The leaf stoma non saturation condition is considered to calculate the evapotranspiration,and the root absorption model is revised as well.The canopy is divided into several layers,aiming at revealing the vertical profiles of mean quantities in it and providing scientific basis for parameterization of terrestrial processes.The model is shown capable of well simulating the microenvironment of wheat canopy in good agreement with measured mean temperature,specific humidity and latent heat fluxes, et al .And the sensitivity test is carried out as well to analyze canopy's influence.