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- W2938141008 endingPage "183" @default.
- W2938141008 startingPage "183" @default.
- W2938141008 abstract "The CenW ecosystem model simulates carbon, water, and nitrogen cycles following ecophysiological processes and management practices on a daily basis. We tested and evaluated the model using five years eddy covariance measurements from two adjacent but differently managed grasslands in France. The data were used to independently parameterize CenW for the two grassland sites. Very good agreements, i.e., high model efficiencies and correlations, between observed and modeled fluxes were achieved. We showed that the CenW model captured day-to-day, seasonal, and interannual variability observed in measured CO2 and water fluxes. We also showed that following typical management practices (i.e., mowing and grazing), carbon gain was severely curtailed through a sharp and severe reduction in photosynthesizing biomass. We also identified large model/data discrepancies for carbon fluxes during grazing events caused by the noncapture by the eddy covariance system of large respiratory losses of C from dairy cows when they were present in the paddocks. The missing component of grazing animal respiration in the net carbon budget of the grazed grassland can be quantitatively important and can turn sites from being C sinks to being neutral or C sources. It means that extra care is needed in the processing of eddy covariance data from grazed pastures to correctly calculate their annual CO2 balances and carbon budgets." @default.
- W2938141008 created "2019-04-25" @default.
- W2938141008 creator A5002687656 @default.
- W2938141008 creator A5010463598 @default.
- W2938141008 creator A5013182143 @default.
- W2938141008 creator A5015413244 @default.
- W2938141008 creator A5042170663 @default.
- W2938141008 creator A5047953173 @default.
- W2938141008 date "2019-04-10" @default.
- W2938141008 modified "2023-10-17" @default.
- W2938141008 title "Modeling Carbon and Water Fluxes of Managed Grasslands: Comparing Flux Variability and Net Carbon Budgets between Grazed and Mowed Systems" @default.
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