TY - JOUR
T1 - An evapotranspiration model for sparsely vegetated canopies under partial root-zone irrigation
AU - Zhang, Baozhong
AU - Kang, Shaozhong
AU - Zhang, Lu
AU - Tong, Ling
AU - Du, Taisheng
AU - Li, Fusheng
AU - ZHANG, Jianhua
N1 - Funding Information:
We are grateful to the research grants from Chinese National Natural Science Fund (50528909 and 50869001), National Key Basic Research Program (2006CB403406), National High Tech Research Plan (2006AA100203) and PCSIRT (IRT0657), Research Grant Council of Hong Kong (HKBU 262307), Hong Kong University Grants Committee (AOE/B-07/99), and Hong Kong Baptist University Matching Research Fund.
PY - 2009/11/3
Y1 - 2009/11/3
N2 - An evapotranspiration (ET) model for sparsely vegetated canopies under partial root-zone irrigation (PRI) was developed and tested using measurements from a vineyard in the arid region of northwest China. This model (PRI-ET) was mainly based on the Shuttleworth-Wallace (S-W) model and took into consideration the differences in soil water content between furrow-irrigation ditch and ridge under the PRI scheme and variable canopy shading over the surface. Estimates of ET and its components (plant transpiration and soil evaporation) by the PRI-ET and S-W models were compared to ET, plant transpiration and soil evaporation measured by Bowen ratio-energy balance, heat-pulse sap flow sensor and micro-lysimeter, respectively. The PRI-ET model can estimate the vineyard ET and its components more accurately than the S-W model, indicating that the PRI-ET model is suitable for estimating vineyard ET under PRI.
AB - An evapotranspiration (ET) model for sparsely vegetated canopies under partial root-zone irrigation (PRI) was developed and tested using measurements from a vineyard in the arid region of northwest China. This model (PRI-ET) was mainly based on the Shuttleworth-Wallace (S-W) model and took into consideration the differences in soil water content between furrow-irrigation ditch and ridge under the PRI scheme and variable canopy shading over the surface. Estimates of ET and its components (plant transpiration and soil evaporation) by the PRI-ET and S-W models were compared to ET, plant transpiration and soil evaporation measured by Bowen ratio-energy balance, heat-pulse sap flow sensor and micro-lysimeter, respectively. The PRI-ET model can estimate the vineyard ET and its components more accurately than the S-W model, indicating that the PRI-ET model is suitable for estimating vineyard ET under PRI.
KW - Bowen ratio-energy balance
KW - Evapotranspiration model
KW - Partial root-zone irrigation
KW - Shuttleworth-Wallace model
KW - Vineyard
UR - http://www.scopus.com/inward/record.url?scp=69649097668&partnerID=8YFLogxK
U2 - 10.1016/j.agrformet.2009.07.007
DO - 10.1016/j.agrformet.2009.07.007
M3 - Journal article
AN - SCOPUS:69649097668
SN - 0168-1923
VL - 149
SP - 2007
EP - 2011
JO - Agricultural and Forest Meteorology
JF - Agricultural and Forest Meteorology
IS - 11
ER -