Simulation of diurnal variations of CO2, water and heat fluxes over winter wheat with a model coupled photosynthesis and transpiration

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Show simple item record Wang, J Yu, Q Li, J Li, L Li, X Yu, G Sun, X 2010-05-28T09:46:12Z 2006-01
dc.identifier.citation Agricultural and Forest Meteorology, 2006, 137 (3-4), pp. 194 - 219
dc.identifier.issn 0168-1923
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract A model was developed that couples canopy photosynthesis and transpiration of winter wheat. The model combined a two-layer evapotranspiration model with a coupled photosynthesisstomatal conductance model to study the diurnal variations of CO2, water and heat fluxes of winter wheat. Field experiments were conducted in Yucheng Comprehensive Experimental Station in the North China Plain to evaluate the model. Half-hourly data of weather variables and CO2, water and heat fluxes were measured by the eddy covariance method in 20022003. An analysis of measured flux data showed that there was an evident midday depression of photosynthesis, caused by stomatal closure due to high vapor water deficit and canopy temperature though the soil was well irrigated. There was a close agreement between simulated and measured net radiation, CO2 flux, sensible and latent heat fluxes, which proved the predictive power of the coupled photosynthesis and transpiration model. The response of CO2 flux, canopy conductance and latent heat flux to changes in climatic factors was discussed, which indicated the model could be used to predict CO2, water and heat fluxes of wheat not only in the North China Plain, but also in other climatic regions in China.
dc.publisher Elsevier Inc
dc.relation.isbasedon 10.1016/j.agrformet.2006.02.007
dc.title Simulation of diurnal variations of CO2, water and heat fluxes over winter wheat with a model coupled photosynthesis and transpiration
dc.type Journal Article
dc.parent Agricultural and Forest Meteorology
dc.journal.volume 3-4
dc.journal.volume 137
dc.journal.number 3-4 en_US
dc.publocation Netherlands en_US
dc.identifier.startpage 194 en_US
dc.identifier.endpage 219 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0703 Crop and Pasture Production
dc.personcode 107001
dc.personcode 109705
dc.percentage 100 en_US Forestry Sciences en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Photosynthesis?transpiration coupled model; CO2 flux; Sensible and latent heat fluxes; Eddy covariance method; Winter wheat; The North China Plain en_US
dc.description.keywords Photosynthesistranspiration coupled model
dc.description.keywords CO2 flux
dc.description.keywords Sensible and latent heat fluxes
dc.description.keywords Eddy covariance method
dc.description.keywords Winter wheat
dc.description.keywords The North China Plain
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - C3
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
utslib.collection.history Closed (ID: 3)

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