QQ客服 官方微博 反馈留言

	Coordination of stomatal control and stem water storage on plant water use in desert riparian trees
	Yu, Tengfei1,2,4; Feng, Qi1,2; Si, Jianhua1,2; Pinkard, Elizabeth A.3
刊名	TREES-STRUCTURE AND FUNCTION
	2019-06-01
卷号	33期号:3页码:787-801
关键词	Stem water storage Stomatal control Stem diameter variations Sap flow Riparian forest Populus
ISSN号	0931-1890
DOI	10.1007/s00468-019-01816-7
通讯作者	Yu, Tengfei(yutf@lzb.ac.cn)
英文摘要	Populus euphratica Oliv. is a relatively conservative' water user even when growing in favourable water conditions, but the mechanistic understanding of this has received little attention. We undertook an experiment to determine trees water use by measuring stem and root sap flow (F-s), variation in stem diameter (D-s), leaf stomatal gas-exchange (e.g. conductance, g(s) and transpiration, T-r) and water potential mml:mfenced close=) open=(Lmml:mfenced during the growing season for P. euphratica. There was a hysteretic apparent feedforward' of stomatal response to increasing VPD. Mean of g(s) was not significantly different among months. L was negatively related to g(s) and T-r, but in contrast, stem F-s was positively associated to T-r but not to g(s). There was no lag in the daily onset and cessation of F-s between the bottom and top of the trunk, possibly due to the short distance between measurement points (about 2m), however, the lag time in F-s between the bottom of the trunk and roots, approximately 30min, suggested that stored water was withdrawn first from the trunk and subsequently the roots. Daily contraction of D-s (-D-s) increased with increasing F-s during both day and night, and expansion of D-s (+D-s) showed a logarithmic rise to a maximum with increasing F-s during the day. Day F-s and -D-s were also logarithmic with respect to VPD, with a correlation coefficient equal to 0.51 and 0.50, respectively (P<0.001). This suggests that water use of P. euphratica was determined by the stomatal control and stem water storage together, which has great significance for the species buffers xylem water deficit, maintaining high leaf production, and water use efficiency.
收录类别	SCI
WOS关键词	SAP FLOW MEASUREMENTS ; EXTREME ARID REGION ; POPULUS-EUPHRATICA ; TRANSPORT-PROPERTIES ; TEMPORAL DYNAMICS ; GROUNDWATER DEPTH ; DIURNAL PATTERNS ; GAS-EXCHANGE ; DRY SEASON ; TRANSPIRATION
WOS研究方向	Forestry
WOS类目	Forestry
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000469005900013
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555426
专题	寒区旱区环境与工程研究所
通讯作者	Yu, Tengfei
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Alxa Desert Ecohydrol Expt Res Stn, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China 3.CSIRO Land & Water, Hobart, Tas 7005, Australia 4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yu, Tengfei,Feng, Qi,Si, Jianhua,et al. Coordination of stomatal control and stem water storage on plant water use in desert riparian trees[J]. TREES-STRUCTURE AND FUNCTION,2019,33(3):787-801.
APA	Yu, Tengfei,Feng, Qi,Si, Jianhua,&Pinkard, Elizabeth A..(2019).Coordination of stomatal control and stem water storage on plant water use in desert riparian trees.TREES-STRUCTURE AND FUNCTION,33(3),787-801.
MLA	Yu, Tengfei,et al."Coordination of stomatal control and stem water storage on plant water use in desert riparian trees".TREES-STRUCTURE AND FUNCTION 33.3(2019):787-801.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。