Simulation of CO<inf>2</inf> and latent heat fluxes in the North China Plain

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	Simulation of CO2 and latent heat fluxes in the North China Plain
	Yu Qiang; Liu Changming; Wang Jing
	2005
关键词	Climate change Computer simulation Evapotranspiration Heat flux Photosynthesis Vegetation
英文摘要	We constructed a coupled model for simulating plant photosynthesis and evapotranspiration (CPCEM). In the model, non-rectangular hyperbola is used to simulate leaf photosynthesis rate that is scaled up to estimate canopy gross photosynthesis rate by an integral method. Whole canopy in the model is separated into multi-layers, each of which is divided into sunlit leaves and shade leaves. Canopy net photosynthesis rate is expressed as a function of canopy conductance which is coupled with evapotranspiration. Included the coupled function, evapotranspiration is estimated with a two-layer submodel. The main features of CPCEM are: (1) easy suitability, (2) good physiological base, and (3) simple calculation procedure. Simulated results of CPCEM were compared with those by an eddy covariance system that was installed in a winter wheat farmland of the North China Plain. CPCEM gave a quite well diurnal and seasonal dynamics of net ecosystem exchange, compared with the measurements. The root mean square error between simulation and measurements was only about 2.94 μ mol m^-2 s^-1. Diurnal and seasonal patterns of latent heat flux with the CPCEM were similar to those of measurements. Whereas, simulated latent heat flux was evidently higher than the measured. Copyright by Science in China Press 2005.
出处	Science in China, Series D: Earth Sciences
卷	48 期:SUPPL.1 页:172-181
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24365]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Yu Qiang,Liu Changming,Wang Jing. Simulation of CO2 and latent heat fluxes in the North China Plain. 2005.