@article{fdi:010060463,
  title = {{E}valuation of a simple approach for crop evapotranspiration partitioning and analysis of the water budget distribution for several crop species},
  author = {{B}eziat, {P}. and {R}ivalland, {V}. and {T}allec, {T}. and {J}arosz, {N}. and {B}oulet, {G}illes and {G}entine, {P}. and {C}eschia, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{C}limate variability and climate change induce important intra- and inter-annual variability of precipitation that significantly alters the hydrologic cycle. {T}he surface water budgets and the plant or ecosystem water use efficiency ({WUE}) are in turn modified. {O}btaining greater insight into how climatic variability and agricultural practices affect water budgets and regarding their components in croplands is, thus, important for adapting crop management and limiting water losses. {T}herefore, the principal objectives of this study are: (1) to assess the contribution of different components to the agro-ecosystem water budget and (2) to evaluate how agricultural practices and climate modify the components of the surface water budget. {T}o achieve these goals, we tested a new method for partitioning evapotranspiration ({ETR}), measured by means of an eddy-covariance method, into soil evaporation ({E}) and plant transpiration ({TR}) based on marginal distribution sampling ({MDS}). {T}he partitioning method proposed requires continuous flux recording and measurements of soil temperature and humidity close to the surface, global radiation above the canopy and assessment of leaf area index dynamics. {T}his method is well suited for crops because it requires a dataset including long bare-soil periods alternating with vegetated periods for accurate partitioning estimation. {W}e compared these estimations with calibrated simulations of the {ICARE}-{SVAT} double source mechanistic model. {T}he results showed good agreement between the two partitioning methods, demonstrating that {MDS} is a convenient, simple and robust tool for estimating {E} with reasonable associated uncertainties. {D}uring the growing season, the proportion of {E} in {ETR} was approximately one-third and varied mainly with crop leaf area. {W}hen calculated on an annual time scale, the proportion of {E} in {ETR} reached more than 50%, depending on the crop leaf area and on the duration and distribution of bare soil within the year.},
  keywords = {{C}rop ; {E}vapotranspiration ; {T}ranspiration ; {E}vaporation ; {W}ater budget ; {P}artitioning ; {L}and-surface model},
  booktitle = {},
  journal = {{A}gricultural and {F}orest {M}eteorology},
  volume = {177},
  numero = {},
  pages = {46--56},
  ISSN = {0168-1923},
  year = {2013},
  DOI = {10.1016/j.agrformet.2013.03.013},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060463},
}