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	Simulation of CO(2) and latent heat fluxes in the North China Plain
	Wang J.; Yu Q.; Wang J.
	2005
关键词	photosynthesis canopy conductance evapotranspiration coupled model winter-wheat canopy photosynthesis gross photosynthesis leaf photosynthesis use efficiency land-surface energy model conductance evapotranspiration
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 mu 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.
出处	Science in China Series D-Earth Sciences
卷	48
页	172-181
收录类别	SCI
语种	英语
ISSN号	1006-9313
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/22313]
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	Wang J.,Yu Q.,Wang J.. Simulation of CO(2) and latent heat fluxes in the North China Plain. 2005.

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