干旱区生态环境知识资源中心(Arid): Interannual variation in sap flow response in three xeric shrub species to periodic drought

Arid

DOI	10.1016/j.agrformet.2020.108276
	Interannual variation in sap flow response in three xeric shrub species to periodic drought
	Iqbal, Sundas; Zha, Tianshan; Jia, Xin; Hayat, Muhammad; Qian, Duo; Bourque, Charles P-A; Tian, Yun; Bai, Yujie; Liu, Peng; Yang, Ruizhi; Khan, Alamgir
通讯作者	Zha, TS (corresponding author), Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China. ; Zha, TS (corresponding author), Beijing Forestry Univ, Beijing Engn Res Ctr Soil & Water Conservat, Beijing, Peoples R China.
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2021
卷号	297
英文摘要	Extreme seasonal droughts frequently occur in semiarid and arid areas of the world. They can exert a profound influence on the physiological state of desert plants. Short-term rainfall and long-term water shortages in the Mu Us Desert have differentiated the role of individual species with their distinct ability to resist and recover from drought. This study explores how the scale of rainfall events affects interannual variation in sap flow in three dominant desert-shrub species [i.e., Salbc psammophila (SP), Artemisia ordosica (AO), and Hedysarum mongolicum (HM)], and whether the associated changes in soil-water dynamics helped to modify sap flow. As a result, interannual variation in sap flow (J(s)) was mostly driven by precipitation (PPT), Volumetric soil water content (VWC), and leaf area index (LAI), with their individual influences varying as a function of plant phenophases. The species acclimated to long-term summer drought (> 30 days, i.e., no rain over a 30-day period or longer) by reducing stomatal conductance in the three species by 66.5, 59.5, and 43.5%, respectively, suggesting a physiological adjustment in water conservation in response to drought. Average summer drought (June-July) reduced J(s) in the three species by 55.5 (in SP), 42 (AO), and 28.5% (HM), more than spring drought (May-June) at 28% in SP and 9.5% in AO. Among those species, HM exhibited the least sensitivity and the highest overall resistance and resilience to drought. The relationship between J(s) and VWC was modulated by the effect of PPT. Our findings provide compelling evidence that HM is seen to be better suited to future climatic warming, as the species may be capable of accessing deep groundwater reserves replenished by large PPT pulses (5-10 mm), in sustaining its physiological activity over longer periods. These results could help formulate a selection process in determining which shrub species to plant in the sustainable management of desert ecosystems.
英文关键词	drought interannual variation physiological adjustment rainfall events resistance and resilience sap flow
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000608676000029
WOS关键词	VAPOR-PRESSURE DEFICIT ; FINE-ROOT DISTRIBUTION ; WATER-USE EFFICIENCY ; STOMATAL CONDUCTANCE ; RAINFALL PULSES ; SOIL-MOISTURE ; ENVIRONMENTAL VARIABLES ; CARAGANA-KORSHINSKII ; CANOPY CONDUCTANCE ; SEMIARID SHRUBLAND
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347618
作者单位	[Iqbal, Sundas; Zha, Tianshan; Jia, Xin; Hayat, Muhammad; Bourque, Charles P-A; Tian, Yun; Bai, Yujie; Liu, Peng; Yang, Ruizhi; Khan, Alamgir] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; [Iqbal, Sundas; Zha, Tianshan; Jia, Xin; Hayat, Muhammad; Tian, Yun; Bai, Yujie; Liu, Peng; Yang, Ruizhi; Khan, Alamgir] Beijing Forestry Univ, Beijing Engn Res Ctr Soil & Water Conservat, Beijing, Peoples R China; [Qian, Duo] Beijing Vocat Coll Agr, Beijing 102442, Peoples R China; [Bourque, Charles P-A] Univ New Brunswick, Fac Forestry & Environm Management, 28 Dineen Dr, Fredericton, NB E3B 5A3, Canada
推荐引用方式 GB/T 7714	Iqbal, Sundas,Zha, Tianshan,Jia, Xin,et al. Interannual variation in sap flow response in three xeric shrub species to periodic drought[J]. 北京林业大学,2021,297.
APA	Iqbal, Sundas.,Zha, Tianshan.,Jia, Xin.,Hayat, Muhammad.,Qian, Duo.,...&Khan, Alamgir.(2021).Interannual variation in sap flow response in three xeric shrub species to periodic drought.AGRICULTURAL AND FOREST METEOROLOGY,297.
MLA	Iqbal, Sundas,et al."Interannual variation in sap flow response in three xeric shrub species to periodic drought".AGRICULTURAL AND FOREST METEOROLOGY 297(2021).