摘要
本文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,针对中国科学院红壤试验站地区陆气水热传输过程,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.陆气耦合模式分别对大气、植被、土壤作多层划分,以助于细致了解沿高度分布的各物理量.利用本模式对中国科学院红壤试验站地区油菜地陆气水热交换过程进行了数值模拟,模拟结果与实测值吻合较好.证明该模式成功地模拟了陆气相互作用过程,可为当地合理利用水热资源提供科学依据.
In this present paper,we have elucidated the importance of investigation on land surface\|atmosphere interaction for mankind'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 field in Red Soil Areas is presented.Especially,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 within it and providing scientific basis for parameterization of terrestrial processes.The model is shown capable of well simulating the microenvironment of 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.
出处
《中央民族大学学报（自然科学版）》
2003年第2期101-110,共10页
Journal of Minzu University of China(Natural Sciences Edition)
基金
国家自然科学基金(40071007
19832060)
中国科学院红壤生态实验站基金(2000 K 04).
