气候变化领域集成服务门户(CCPortal): Characteristic of Stomatal Conductance and Optimal Stomatal Behaviour in an Arid Oasis of Northwestern China

CCPortal

DOI	10.3390/su14020968
	Characteristic of Stomatal Conductance and Optimal Stomatal Behaviour in an Arid Oasis of Northwestern China
	Han, Tuo; Feng, Qi; Yu, Tengfei; Yang, Xiaomei; Zhang, Xiaofang; Li, Kuan
通讯作者	Feng, Q (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期	2022
EISSN	2071-1050
卷号	14 期号:2
英文摘要	Stomatal conductance (g(s)), the process that governs plant carbon uptake and water loss, is fundamental to most Land Surface Models (LSMs). With global change accelerating, more attention should be paid to investigating stomatal behavior, especially in extremely arid areas. In this study, gas exchange measurements and environmental/biological variables observations during growing seasons in 2016 and 2017 were combined to investigate diurnal and seasonal characteristics of g(s) and the applicability of the optimal stomatal conductance model in a desert oasis vineyard. The results showed that the responses of g(s) to environmental factors (photosynthesis active radiation, PAR; vapor pressure deficit, VPD; and temperature, T) formed hysteresis loops in the daytime. The stomatal conductance slope, g(1), a parameter in the unified stomatal optimal model, varied in different growing seasons and correlated with the soil-to-leaf hydraulic conductance (K-L). These results indicated the potential bias when using a constant g(1) value to simulate g(s) and highlighted that the water-use strategy of oasis plants might not be consistent throughout the entire growing season. Our findings further help to achieve a better understanding of stomata behavior in responding to climate change and encourage future efforts toward a more accurate parameterization of g(s) to improve the modeling of LSMs.
关键词	WATER-USE EFFICIENCY VAPOR-PRESSURE DEFICIT CANOPY CONDUCTANCE SAP FLOW PHOTOSYNTHESIS LEAF ECOSYSTEM TRANSPIRATION ACCLIMATION ATMOSPHERE
英文关键词	stomatal conductance; hysteresis loops; seasonal variation; stomatal conductance slope; soil-to-leaf hydraulic conductance
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS记录号	WOS:000758511900001
来源期刊	SUSTAINABILITY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253660
作者单位	[Han, Tuo; Feng, Qi; Yu, Tengfei; Yang, Xiaomei; Zhang, Xiaofang; Li, Kuan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Han, Tuo,Feng, Qi,Yu, Tengfei,et al. Characteristic of Stomatal Conductance and Optimal Stomatal Behaviour in an Arid Oasis of Northwestern China[J]. 中国科学院西北生态环境资源研究院,2022,14(2).
APA	Han, Tuo,Feng, Qi,Yu, Tengfei,Yang, Xiaomei,Zhang, Xiaofang,&Li, Kuan.(2022).Characteristic of Stomatal Conductance and Optimal Stomatal Behaviour in an Arid Oasis of Northwestern China.SUSTAINABILITY,14(2).
MLA	Han, Tuo,et al."Characteristic of Stomatal Conductance and Optimal Stomatal Behaviour in an Arid Oasis of Northwestern China".SUSTAINABILITY 14.2(2022).