干旱区生态环境知识资源中心(Arid): The ratio of transpiration to evapotranspiration and water use efficiency in an irrigated oasis agroecosystem: Different temporal-scale effects

Arid

DOI	10.1016/j.agwat.2024.108980
	The ratio of transpiration to evapotranspiration and water use efficiency in an irrigated oasis agroecosystem: Different temporal-scale effects
	Zhang, Yang; Zhu, Gaofeng; Che, Tao; Wang, Shangtao; Xu, Cong; Chen, Huiling; Zhang, Yuzhong; Su, Yonghong; Fan, Haochen
通讯作者	Zhu, GF ; Che, T
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2024
卷号	302
英文摘要	Agroecosystems play an important role in carbon sequestration and water consumption of global terrestrial ecosystems. However, the magnitude, pattern, and regulation of the ratio of transpiration to evapotranspiration (T/ET), T /ET), and also water use efficiency at ecosystem (WUEe) e ) and canopy (WUEc) c ) scales, remain unclear in agroecosystems in arid areas. In this study, a six-year synchronous observation of water-carbon fluxes and sap flow by the eddy covariance and sap flow techniques was conducted in an irrigated vineyard in northwest China. We found that T /ET, WUEe, e , and WUEc c changed dynamically at the daily (1.0-98.6%, 0.3-4.9 g C kg-1 -1 H2O, 2 O, 0.4-5.9 g C kg-1 -1 H2O) 2 O) and monthly (26.0-71.0%, 0.8-1.8 g C kg-1 -1 H2O, 2 O, 2.3-3.2 g C kg-1 -1 H2O) 2 O) scales. At the annual scale, the range was relatively narrow, with mean values of 61.7% f 3.7%, 1.5 f 0.1 g C kg-1 -1 H2O, 2 O, and 2.4 f 0.3 g C kg-1 -1 H2O, 2 O, respectively (mean f standard deviation). Biological and environmental factors regulated their dynamics on different temporal scales. Specifically, leaf area index (LAI) and canopy conductance (gc) g c ) mainly determined the seasonal variation of T /ET, WUEe, e , and WUEc c at the daily and monthly scales. However, at the annual scale, vapor pressure deficit (VPD) and air temperature (Ta) T a ) became the main influencing factors. These results highlight the complexity of water-carbon coupling in agroecosystems and the necessity of considering specific factors at different temporal scales when modeling and managing agricultural water resources. In addition, there is still great water-saving potential from the perspective of WUE in the cultivation of vines in Northwest China.
英文关键词	water consumption carbon sequestration evapotranspiration partitioning vineyard
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001290214900001
WOS关键词	DUAL CROP COEFFICIENTS ; EDDY-COVARIANCE ; SAP FLOW ; CARBON-DIOXIDE ; ENVIRONMENTAL CONTROLS ; TYPICAL ECOSYSTEMS ; VEGETATION CONTROL ; ENERGY-BALANCE ; WINTER-WHEAT ; VINEYARD
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/2XILL650/402694
推荐引用方式 GB/T 7714	Zhang, Yang,Zhu, Gaofeng,Che, Tao,et al. The ratio of transpiration to evapotranspiration and water use efficiency in an irrigated oasis agroecosystem: Different temporal-scale effects[J],2024,302.
APA	Zhang, Yang.,Zhu, Gaofeng.,Che, Tao.,Wang, Shangtao.,Xu, Cong.,...&Fan, Haochen.(2024).The ratio of transpiration to evapotranspiration and water use efficiency in an irrigated oasis agroecosystem: Different temporal-scale effects.AGRICULTURAL WATER MANAGEMENT,302.
MLA	Zhang, Yang,et al."The ratio of transpiration to evapotranspiration and water use efficiency in an irrigated oasis agroecosystem: Different temporal-scale effects".AGRICULTURAL WATER MANAGEMENT 302(2024).