干旱区生态环境知识资源中心(Arid): Water use dynamics of trees in a Pinus tabuliformis plantation in semiarid sandy regions, Northeast China

Arid

DOI	10.1016/j.agwat.2022.107995
	Water use dynamics of trees in a Pinus tabuliformis plantation in semiarid sandy regions, Northeast China
	Song, Lining; Zhu, Jiaojun; Zheng, Xiao; Li, Xinjunyan; Wang, Kai; Zhang, Jinxin; Wang, Guochen; Sun, Haihong
通讯作者	Zhu, JJ
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	275
英文摘要	Quantifying tree water use and its environmental controlling mechanisms are significantly important for un-derstanding of adaptation strategy of trees and plantation management in semiarid and arid regions. Here, tree water consumption and tree conductance of Chinese pine (Pinus tabuliformis) plantation were quantified using sap flow measurements. Environmental variables were measured concurrently during the growing seasons of 2019 and 2020. Results showed that daily, daytime and nighttime tree water consumption averaged 27.4, 24.7, and 2.7 kg d-1 across two years, respectively. Nighttime tree water consumption accounted for 10% of the daily's, which was mainly used for recharging stem water storage deficit caused by daytime transpiration to avoid hy-draulic failure. Daytime tree water consumption was more driven by solar radiation than by vapor pressure deficit. Moreover, daytime tree conductance was 0.9 mm s-1, and significantly decreased with increasing vapor pressure deficit and decreasing soil moisture, indicating that trees had strict stomatal regulation on tree tran-spiration. Scaling-up from tree to stand transpiration, daytime stand transpiration averaged 1.1 mm d-1 across two years, while accumulated stand transpiration was 112.8 mm and 126.8 mm in 2019 and 2020, respectively, accounting for 33% and 37% of precipitation. However, soil evaporation occupied 35% and 51% of precipitation in 2019 and 2020, respectively. This indicated that most of water in the plantation was consumed by soil evaporation. Difference between precipitation and sum of daytime stand transpiration, canopy interception, soil evaporation, and change in soil water storage was positive in two years, indicating that water budget was balanced. These findings indicated that Chinese pine trees had strict stomatal regulation on tree transpiration, and could recharge stem water storage deficit by nighttime sap flow. Moreover, stand transpiration occupied a small part of the water balance, and thus water supply was surplus, resulting in maintaining the stability of Chinese pine plantation.
英文关键词	J E Fern ?andez Adaptation strategy Plantation management Sap flow Nighttime tree water consumption Transpiration
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:000882435400003
WOS关键词	SAP FLUX-DENSITY ; BLACK LOCUST PLANTATION ; LOESS PLATEAU ; STOMATAL CONDUCTANCE ; CANOPY CONDUCTANCE ; NIGHTTIME TRANSPIRATION ; FOREST TRANSPIRATION ; NOCTURNAL TRANSPIRATION ; INTERSPECIFIC VARIATION ; INTERANNUAL VARIATION
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/2XILL650/395019
推荐引用方式 GB/T 7714	Song, Lining,Zhu, Jiaojun,Zheng, Xiao,et al. Water use dynamics of trees in a Pinus tabuliformis plantation in semiarid sandy regions, Northeast China[J],2023,275.
APA	Song, Lining.,Zhu, Jiaojun.,Zheng, Xiao.,Li, Xinjunyan.,Wang, Kai.,...&Sun, Haihong.(2023).Water use dynamics of trees in a Pinus tabuliformis plantation in semiarid sandy regions, Northeast China.AGRICULTURAL WATER MANAGEMENT,275.
MLA	Song, Lining,et al."Water use dynamics of trees in a Pinus tabuliformis plantation in semiarid sandy regions, Northeast China".AGRICULTURAL WATER MANAGEMENT 275(2023).