干旱区生态环境知识资源中心(Arid): Comparison of Remote Sensing based Multi-Source ET Models over Cropland in a Semi-Humid Region of China

Arid

DOI	10.3390/atmos11040325
	Comparison of Remote Sensing based Multi-Source ET Models over Cropland in a Semi-Humid Region of China
	Zhuang, Qifeng 1; Wang, Hao 2; Xu, Yuqi 1
通讯作者	Wang, Hao
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2020
卷号	11 期号:4
英文摘要	The estimation of cropland evapotranspiration (ET) is essential for agriculture water management, drought monitoring, and yield forecast. Remote sensing-based multi-source ET models have been widely applied and validated in the semi-arid region of China. However, careful investigation of the models' performances for different crop types (winter wheat and summer maize) over the semi-humid region is still necessary. This study used remote sensing data (Landsat 8 and ASTER) and compared three mainstream multi-source ET models: (i) the two-source energy balance model, i.e., TSEB; (ii) the Penman-Monteith based four-source model, i.e., 4s-PM; (iii) the Priestley Taylor-Jet Propulsion Laboratory ET algorithm, i.e., PT-JPL. The measurements of the eddy-covariance (EC) flux tower located in Guantao county of North China were used to validate the models. The results showed that the TSEB model performed the best in estimating latent heat flux (LE) of maize, with an RMSE of 75.0 W/m(2) and an R-2 of 0.9, and the 4s-PM model had the highest accuracy of LE estimation for wheat, with an RMSE of 61.0 W/m(2) and an R-2 of 0.91. The LE spatial distribution comparison indicated that the PT-JPL model had more capacity to exhibit crop ET heterogeneity. The major environmental factors affecting ET varied with crop types and crop growth stages. Without taking soil moisture into account, the 4s-PM and TSEB models overestimated LE under water deficit in the maturation stage of wheat. The plant moisture stress based on vegetation index in the PT-JPL model underestimated the evaporation in the maturation stage while the cropland was still wet.
英文关键词	cropland ET multi-source model canopy conductance environmental factors
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000539492200012
WOS关键词	ENERGY-BALANCE MODEL ; SURFACE-ENERGY ; ENVIRONMENTAL-FACTORS ; 2-SOURCE MODEL ; WATER-STRESS ; EVAPOTRANSPIRATION ; TEMPERATURE ; SOIL ; IMPLEMENTATION ; ALGORITHM
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319420
作者单位	1.Nanjing Tech Univ, Coll Geomat Sci & Technol, Nanjing 211816, Peoples R China; 2.Chinese Acad Surveying & Mapping, 28 Lianhuachi West Rd, Beijing 100036, Peoples R China
推荐引用方式 GB/T 7714	Zhuang, Qifeng,Wang, Hao,Xu, Yuqi. Comparison of Remote Sensing based Multi-Source ET Models over Cropland in a Semi-Humid Region of China[J],2020,11(4).
APA	Zhuang, Qifeng,Wang, Hao,&Xu, Yuqi.(2020).Comparison of Remote Sensing based Multi-Source ET Models over Cropland in a Semi-Humid Region of China.ATMOSPHERE,11(4).
MLA	Zhuang, Qifeng,et al."Comparison of Remote Sensing based Multi-Source ET Models over Cropland in a Semi-Humid Region of China".ATMOSPHERE 11.4(2020).