Precipitation and evapotranspiration partitioning on the Three-River Source Region: A comparison between water balance and energy balance models

NWIPB OpenIR

	Precipitation and evapotranspiration partitioning on the Three-River Source Region: A comparison between water balance and energy balance models
	Zhang, Lifeng; Schlaepfer, Daniel R.; Chen, Zhiguang; Zhao, Liang; Li, Qi; Gu, Song; Lauenroth, William K.
	2021
发表期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
卷号	38
摘要	Study Region: Three-River Source Region, Qinghai-Tibetan Plateau, China. Study Focus: Evapotranspiration (ET) is often the largest loss of water from grassland ecosystems and consists of two constituents: evaporation (E) and transpiration (T), but it is very difficult to separate E and T. In this study, we used an energy balance model (Shuttleworth-Wallace) and a water balance model (SOILWAT2) to estimate the water budget variables over a 10-year period (2007-2016) in a degraded alpine meadow in the Three-River Source Region on the QinghaiTibetan Plateau. New Hydrological Insights for the Region: The models produced contrasting patterns of precipitation and ET partitioning at the study site. Precipitation partitioning by SW2 resulted in substantial fluxes of both ET and deep drainage, while ET estimated by SW consumed almost all precipitation. ET was partitioned by the models into different annual E and T fluxes as well as different monthly and annual T/ET. Our study site located in an important water source region suggests that its water balance would contribute to drainage which aligns better with SW2 results. The surprising discrepancies between the models in the partitioning of precipitation into T, E, and deep drainage, however, is limiting our understanding and management of the degraded site and will require future work to reconcile.
关键词	The SOILWAT2 model The Shuttleworth-Wallace model Water balance Energy balance Degraded meadow
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/60665
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zhang, Lifeng,Schlaepfer, Daniel R.,Chen, Zhiguang,et al. Precipitation and evapotranspiration partitioning on the Three-River Source Region: A comparison between water balance and energy balance models[J]. JOURNAL OF HYDROLOGY-REGIONAL STUDIES,2021,38.
APA	Zhang, Lifeng.,Schlaepfer, Daniel R..,Chen, Zhiguang.,Zhao, Liang.,Li, Qi.,...&Lauenroth, William K..(2021).Precipitation and evapotranspiration partitioning on the Three-River Source Region: A comparison between water balance and energy balance models.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,38.
MLA	Zhang, Lifeng,et al."Precipitation and evapotranspiration partitioning on the Three-River Source Region: A comparison between water balance and energy balance models".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 38(2021).