干旱区生态环境知识资源中心(Arid): Soil-moisture-dependent nocturnal water use strategy and its responses to meteorological factors in a seasonal-arid poplar plantation

Arid

DOI	10.1016/j.agwat.2022.107984
	Soil-moisture-dependent nocturnal water use strategy and its responses to meteorological factors in a seasonal-arid poplar plantation
	Di, Nan; Yang, Shangjin; Liu, Yang; Fan, Yunxiang; Duan, Jie; Nadezhdina, Nadezhda; Li, Ximeng; Xi, Benye
通讯作者	Xi, BY
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2022
卷号	274
英文摘要	Nocturnal water uses (Q(n)) significantly affect global water budgets and diurnal water cycles, which are currently suffering from restrictions of soil drought and soil water depletion caused by climate change and worldwide greening. Recent studies have recognized the vital influence of soil water availability on Q(n), but responses of nocturnal water use strategy to soil moisture variation were not fully understood. For example, the effect of soil water content (theta) on the trade-offs between two components of Q(n), stem water refilling (R-e) and nocturnal transpiration (T-n), was rarely involved and remained unclear. This study analyzed the nocturnal sap flow of typical afforestation species, poplar plantation, under different soil water conditions in a seasonal arid region of northern China. Results indicated that higher theta significantly promoted Q(n) through enhancing the stomatal conductance but had less influence on the proportion of nocturnal water use to daily water use (Q(n)%) (7 %similar to 10 %). With the decline of soil water conditions, significant linear correlations between Q(n) and theta shifted from deep soil layers to the soil surface. The influence of meteorological factors on Q(n) depended on soil water condition, and the explanation of nocturnal vapor pressure deficit (VPDn) to Q(n) became weaker with increasing soil moisture. Negative linear relations between the proportion of stem water refilling to Q(n) (R-e%) and theta were shown within treatments, but a significantly higher R-e% was observed under more sufficient soil water. These opposite responses of R-e% to theta reflected the different adaptions of Q(n) to soil water availability on short- and long-scales. This study highlights the crucial role of soil moisture in the nocturnal water use and balance strategy of a seasonal-arid poplar plantation. Our results help better understand the nocturnal transpiration processes in the context of global climate change.
英文关键词	Nocturnal sap flow Trade-offs Soil water content Meteorological drivers Populus tomentosa
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000895568900001
WOS关键词	POPULUS-TOMENTOSA ; SAP FLOW ; NIGHTTIME TRANSPIRATION ; STOMATAL CONDUCTANCE ; CHINA ; FOREST ; AVAILABILITY ; EMBOLISM ; GROWTH ; ROOTS
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/2XILL650/391658
推荐引用方式 GB/T 7714	Di, Nan,Yang, Shangjin,Liu, Yang,et al. Soil-moisture-dependent nocturnal water use strategy and its responses to meteorological factors in a seasonal-arid poplar plantation[J],2022,274.
APA	Di, Nan.,Yang, Shangjin.,Liu, Yang.,Fan, Yunxiang.,Duan, Jie.,...&Xi, Benye.(2022).Soil-moisture-dependent nocturnal water use strategy and its responses to meteorological factors in a seasonal-arid poplar plantation.AGRICULTURAL WATER MANAGEMENT,274.
MLA	Di, Nan,et al."Soil-moisture-dependent nocturnal water use strategy and its responses to meteorological factors in a seasonal-arid poplar plantation".AGRICULTURAL WATER MANAGEMENT 274(2022).