Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China (SCI)
	Si J. H.; Feng Q.; Yu T. F.; Zhao C. Y.
刊名	Journal of Arid Land
	2015
卷号	7 期号:5 页码:665-674
英文摘要	Nighttime sap flow is a potentially important factor that affects whole-plant water balance and water-use efficiency (WUE). Its functions include predawn disequilibrium between plant and soil water potentials as well as between the increments of oxygen supply and nutrient uptake. However, main factors that drive nighttime sap flow remain unclear, and researches related to the relationship between nighttime sap flow velocity and environmental factors are limited. Accordingly, we investigated the variations in the nighttime sap flow of Populus euphratica in a desert riparian forest of an extremely arid region, Northwest China. Results indicated that P. euphratica sap flow occurred throughout the night during the growing season because of the partial stomata opening. Nighttime sap flow for the P. euphratica forest accounted for 31%-47% of its daily sap flow during the growing season. The high value of nighttime sap flow could be the result of high stomatal conductance and could have significant implications for water budgets. Throughout the whole growing season, nighttime sap flow velocity of P. euphratica was positively correlated with the vapor pressure deficit (VPD), air temperature and soil water content. We found that VPD and soil water content were the main driving factors for nighttime sap flow of P. euphratica.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27607]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Si J. H.,Feng Q.,Yu T. F.,et al. Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China (SCI)[J]. Journal of Arid Land,2015,7(5):665-674.
APA	Si J. H.,Feng Q.,Yu T. F.,&Zhao C. Y..(2015).Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China (SCI).Journal of Arid Land,7(5),665-674.
MLA	Si J. H.,et al."Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China (SCI)".Journal of Arid Land 7.5(2015):665-674.