A Dual-Source Energy Balance Model Coupled with Jarvis Canopy Resistance for Estimating Surface Evapotranspiration in Arid and Semi-Arid Regions

Qiutong Zhang, Jinling Kong (), Lizheng Wang, Xixuan Wang, Zaiyong Zhang, Yizhu Jiang and Yanling Zhong
Additional contact information
Qiutong Zhang: College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China
Jinling Kong: College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China
Lizheng Wang: College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China
Xixuan Wang: College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China
Zaiyong Zhang: College of Water and Environment, Chang’an University, Xi’an 710054, China
Yizhu Jiang: College of Earth Sciences and Resources, Chang’an University, Xi’an 710054, China
Yanling Zhong: College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China

Agriculture, 2024, vol. 14, issue 12, 1-20

Abstract: Soil moisture is one of the main factors influencing evapotranspiration (ET) under soil water stress conditions. The TSEB SM model used soil moisture to constrain soil evaporation. However, the transpiration schemes constrained by soil moisture require greater physical realism and the soil evaporation schemes parameters usually need calibration. In this study, the TSEB SM model was enhanced by incorporating Jarvis’s canopy resistance which considered the influence of soil moisture on transpiration schemes. We assessed the new model (TSEB SM+ ) in the Heihe and Haihe basins of China. The TSEB SM+ model displayed a consistency to the TSEB in the ET estimation at the A’rou site, but approximately 30% and 35% reductions in RMSEs at the Huazhaizi and Huailai sites. It produced approximately 20% and 10% of the reductions in the ET RMSEs at the Huailai and A’rou sites compared to the TSEB SM model, but had a similar performance at the Huazhaizi site. Moreover, the TSEB SM+ model estimated ET in the Heihe River Basin with an RMSE of 0.58 mm·day −1 , and it was sensitive to the soil moisture, particularly when the soil moisture was below 30%. In conjunction to soil moisture, the TSEB SM+ model could potentially be a more effective tool for monitoring the ET.

Keywords: evapotranspiration; soil water stress; TSEB; canopy resistance (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2077-0472/14/12/2362/pdf (application/pdf)
https://www.mdpi.com/2077-0472/14/12/2362/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:14:y:2024:i:12:p:2362-:d:1550011

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().