An evapotranspiration model for sparsely vegetated canopies under partial root-zone irrigation

Baozhong Zhang, Shaozhong Kang*, Lu Zhang, Ling Tong, Taisheng Du, Fusheng Li, Jianhua ZHANG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2007-2011
Number of pages5
JournalAgricultural and Forest Meteorology
Volume149
Issue number11
DOIs
Publication statusPublished - 3 Nov 2009

Scopus Subject Areas

  • Forestry
  • Global and Planetary Change
  • Agronomy and Crop Science
  • Atmospheric Science

User-Defined Keywords

  • Bowen ratio-energy balance
  • Evapotranspiration model
  • Partial root-zone irrigation
  • Shuttleworth-Wallace model
  • Vineyard

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