干旱区生态环境知识资源中心(Arid): The Diurnal Variation Characteristics of Latent Heat Flux under Different Underlying Surfaces and Analysis of Its Drivers in The Middle Reaches of the Heihe River

Arid

DOI	10.3390/w14213514
	The Diurnal Variation Characteristics of Latent Heat Flux under Different Underlying Surfaces and Analysis of Its Drivers in The Middle Reaches of the Heihe River
	He, Ji; Li, Qing-Min; Wang, Wen-Chuan; Xu, Dong-Mei; Wan, Yu-Rong
通讯作者	Wang, WC
来源期刊	WATER
EISSN	2073-4441
出版年	2022
卷号	14 期号:21
英文摘要	The Latent Heat Flux (LE) is an important component of surface water heat transfer and hydrological cycle, and monitoring it is of great value for water resource management and crop water demand estimation. The Heihe River Basin has complex topography, which ensures better variable control in LE analysis. In this paper, the time series analysis and statistics of LE under different underlying surface conditions in summer were carried out by using the eddy correlation observation data in the Heihe River Basin, and the regression factors were analyzed. The results show that when the underlying surface types are greatly different, there are obvious differences in the daily distribution of LE, the daily variation trend of LE and the influencing factors. The range of diurnal distribution of LE in dune, Gobi and desert from -50 W/m(2) to 100 W/m(2). The diurnal LE distribution of vegetable fields, cornfields and wetlands were about 55% concentrated between -50 W/m(2) and 100 W/m(2). Temperature and carbon dioxide concentration (CO2) are the dominant factors affecting latent heat flux. Further analysis of temperature and CO2 is carried out by stepwise regression analysis, and multiple regression models are established. In terms of correlation and confidence, the results are better than the single factor fitting, which can better reflect the synergistic effect of temperature and CO2 on LE.
英文关键词	eddy correlation latent heat flux underlying surface climatic conditions arid area
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000882157000001
WOS关键词	WATER-USE EFFICIENCY ; GOODNESS-OF-FIT ; EDDY-COVARIANCE ; WEIGHING LYSIMETER ; SOIL EVAPORATION ; WINTER-WHEAT ; MAIZE FIELD ; SAP-FLOW ; EVAPOTRANSPIRATION ; CHINA
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394851
推荐引用方式 GB/T 7714	He, Ji,Li, Qing-Min,Wang, Wen-Chuan,et al. The Diurnal Variation Characteristics of Latent Heat Flux under Different Underlying Surfaces and Analysis of Its Drivers in The Middle Reaches of the Heihe River[J],2022,14(21).
APA	He, Ji,Li, Qing-Min,Wang, Wen-Chuan,Xu, Dong-Mei,&Wan, Yu-Rong.(2022).The Diurnal Variation Characteristics of Latent Heat Flux under Different Underlying Surfaces and Analysis of Its Drivers in The Middle Reaches of the Heihe River.WATER,14(21).
MLA	He, Ji,et al."The Diurnal Variation Characteristics of Latent Heat Flux under Different Underlying Surfaces and Analysis of Its Drivers in The Middle Reaches of the Heihe River".WATER 14.21(2022).