干旱区生态环境知识资源中心(Arid): Modelling of sap flux density of oak in a humid region in China

Arid

DOI	10.1002/eco.2650
	Modelling of sap flux density of oak in a humid region in China
	Liu, Yujie; Chen, Zhengbing; Cheng, Lei; Qin, Shujing; Wan, Liuliu; Yin, Jiabo; Xu, Jijun; Wang, Yongqiang; Zhang, Quan; Zhang, Lu
通讯作者	Zhang, Q
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2024
卷号	17 期号:5
英文摘要	Transpiration plays a vital role in determining the watershed water cycle. However, we still have little knowledge of the characteristics of tree transpiration in the Hanjiang River Basin, which is the water source for the middle route of South-to-North water diversion project. Here, we measured sap flux density of oak trees (Quercus, the dominant species here) at the 10-min resolution for 2 years and explored its response to the environmental conditions. The incoming short-wave radiation and vapour pressure deficit well explained the variation of daytime sap flux density, and a statistical model was then proposed to calculate the daytime sap flux density correspondingly; then a nighttime sap flux density module was proposed based on the daytime sap flux density calculation. Sap flux density showed clear counter-clockwise hysteresis response to incoming short-wave radiation, and clockwise hysteresis response to vapour pressure deficit. Our sap flux density model can well reproduce the corresponding hysteresis response to incoming short-wave radiation and vapour pressure deficit. This study unravelled the environmental controls of sap flux density of the oak trees in the Hanjiang River Basin, proposed an efficient model for the sap flux density simulation, provided important knowledge for understanding the corresponding forests' water use, which is of critical significance in determining the water availability for the middle route of the South-to-North water diversion project.
英文关键词	environmental factors Hanjiang River basin hysteresis model oak sap flux density
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001206805200001
WOS关键词	HEIHE RIVER-BASIN ; TREE WATER-USE ; SOIL-MOISTURE ; ARID REGION ; ENVIRONMENTAL VARIABLES ; FLOW CHARACTERISTICS ; STAND TRANSPIRATION ; PICEA-CRASSIFOLIA ; RESPONSES ; EVAPOTRANSPIRATION
WOS类目	Ecology ; 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/2XILL650/403350
推荐引用方式 GB/T 7714	Liu, Yujie,Chen, Zhengbing,Cheng, Lei,et al. Modelling of sap flux density of oak in a humid region in China[J],2024,17(5).
APA	Liu, Yujie.,Chen, Zhengbing.,Cheng, Lei.,Qin, Shujing.,Wan, Liuliu.,...&Zhang, Lu.(2024).Modelling of sap flux density of oak in a humid region in China.ECOHYDROLOGY,17(5).
MLA	Liu, Yujie,et al."Modelling of sap flux density of oak in a humid region in China".ECOHYDROLOGY 17.5(2024).