RT Journal Article
T1 Predicting the canopy conductance to water vapor of grapevines using a biophysical model in a hot and arid climate
A1 Egipto, Ricardo
A1 Aquino Martín, Arturo
A1 Andújar Márquez, José Manuel
AB Canopy conductance is a crucial factor in modelling plant transpiration and is highly responsive to water stress. The objective of this study is to develop a straightforward method for estimating canopy conductance (gc) in grapevines. To predict gc, this study combines stomatal conductance to water vapor (gsw) measurements from grapevine leaves, scaled to represent the canopy size by the leaf area index (LAI), with atmospheric variables, such as net solar radiation (Rn) and air vapor pressure deficit (VPD). The developed model was then validated by comparing its predictions with gc values calculated using the inverse of the Penman Monteith equation. The proposed model demonstrates its effectiveness in estimating the gc, with the highest root-mean-squared-error (RMSE=1.45x10−4 m.s−1) being lower than the minimum gc measured in the field (gc obs=0.0005 m.s−1). The results of this study reveal the significant influence of both VPD and gsw on grapevine canopy conductance.
PB Frontiers Media
SN 1664-462X (electrónico)
YR 2024
FD 2024-02
LK https://hdl.handle.net/10272/23197
UL https://hdl.handle.net/10272/23197
LA eng
NO Egipto, R. J. L., Aquino, A., & Andújar, J. M. (2024). Predicting the canopy conductance to water vapor of grapevines using a biophysical model in a hot and arid climate. In Frontiers in Plant Science (Vol. 15). Frontiers Media SA. https://doi.org/10.3389/fpls.2024.1334215
NO We acknowledge FCT Research Unit “GREEN-IT Bioresources for Sustainability” (UIDB/04551/2020- DOI 10.54499/UIDB/04551/2020, and UIDP/04551/2020- DOI 10.54499/UIDP/04551/2020) for financial support. We thank the support of the research units CITES , Centro de Investigación en Tecnologıa, Energıa y Sostenibilidad, Universidad de Huelva, and LEAF (UID/AGR/04129/2019). We also address our acknowledgements to Herdade do Esporão (Reguengos de Monsaraz, Alentejo, PT) and Rui Flores for their contribution on field management of the experimental vineyard.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026