干旱区生态环境知识资源中心(Arid): Performance of the improved two-source energy balance model for estimating evapotranspiration over the heterogeneous surface

Arid

DOI	10.1016/j.agwat.2023.108159
	Performance of the improved two-source energy balance model for estimating evapotranspiration over the heterogeneous surface
	Feng, Jiaojiao; Wang, Weizhen; Che, Tao; Xu, Feinan
通讯作者	Wang, WZ
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	278
英文摘要	Accurate quantification of land surface evapotranspiration (ET) is desperately crucial for agricultural irrigation strategy, drought monitoring, and water resource management in semiarid and arid regions. The two-source energy balance (TSEB) model is an appropriate method for estimating ET over the mixed surface of vegeta-tion and soil since it considers both energy contributions from soil and vegetation. The key parameters of the TSEB model, additional heat transfer resistance (kB-1) and soil resistance, are vital to the estimation of water vapor and heat fluxes over the heterogeneous surface. In this study, the kB-1 parameterization and soil resistance formulation with different coefficients were integrated into the TSEB model to improve the original model performance over the heterogeneous surface in the midstream area of the Heihe River Basin (HRB). The effect of kB-1 on the TSEB model performance was greater than the soil resistance coefficient by validating the model output using the Eddy Covariance (EC) measurement installed at vegetables, maize, residential, orchard, Gobi Desert, sandy desert, and desert steppe surface. The optimized TSEB model would significantly reduce the un-certainty of the original model and improve the consistency between the simulated and observed sensible heat flux (H) and latent heat flux (LE) over the heterogeneous surfaces; RMSE values of H and LE decreased to 53 and 78 W m- 2 from 67 and 104 W m- 2 for seven-sites-average in 2012. The daily ET of this study area ranged from 0.69 to 6.48 mm day- 1 during the growing period; it agreed well with EC flux observations for the vegetated area, especially irrigated cropland with MBE, RMSE, and MAPE values of 0.21 mm d-1, 1.02 mm d-1, and 14.62% at maize site, 0.39 mm d-1, 1.14 mm d-1 and 20.25% at vegetables site. This research enhances the utility of TSEB in flux estimation over heterogeneous landscapes and thus is of great help in formulating sus-tainable water resource management schemes.
英文关键词	Evapotranspiration Two-source energy balance Additional heat transfer resistance Soil resistance Heihe River Basin Heterogeneous surface
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000960868200001
WOS关键词	SENSIBLE HEAT-FLUX ; RIVER-BASIN ; MEDITERRANEAN DRYLANDS ; SOIL EVAPORATION ; EDDY-COVARIANCE ; EARTHS SURFACE ; TEMPERATURE ; VEGETATION ; WATER ; TRANSPIRATION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395038
推荐引用方式 GB/T 7714	Feng, Jiaojiao,Wang, Weizhen,Che, Tao,et al. Performance of the improved two-source energy balance model for estimating evapotranspiration over the heterogeneous surface[J],2023,278.
APA	Feng, Jiaojiao,Wang, Weizhen,Che, Tao,&Xu, Feinan.(2023).Performance of the improved two-source energy balance model for estimating evapotranspiration over the heterogeneous surface.AGRICULTURAL WATER MANAGEMENT,278.
MLA	Feng, Jiaojiao,et al."Performance of the improved two-source energy balance model for estimating evapotranspiration over the heterogeneous surface".AGRICULTURAL WATER MANAGEMENT 278(2023).