File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Field evidence reveals conservative water use of poplar saplings under high aerosol conditions

TitleField evidence reveals conservative water use of poplar saplings under high aerosol conditions
Authors
Keywordsaerosols
diffuse radiation
ecophysiology
leaf transpiration
sap flow
Issue Date2021
PublisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at https://besjournals.onlinelibrary.wiley.com/journal/13652745
Citation
Journal of Ecology, 2021, v. 109 n. 5, p. 2190-2202 How to Cite?
Abstract1. Anthropogenic aerosols could alter multiple meteorological processes such as radiation regime and air temperature, thereby modifying plant transpiration. However, the lack of field observations at leaf and plant level hinders our ability to understand how aerosols could affect plant water use. 2. Aerosol concentrations in northern China fluctuate periodically over a wide range. Taking advantage of this unique natural experiment opportunity, we conducted a series of physiological and environmental measurements at different times of the day to explore diurnal aerosols' effect on leaf transpiration and sap flow of planted poplar saplings (Populus × canadensis Moench). 3. We found that high aerosol concentrations suppressed sun leaf transpiration by reducing leaf-to-air vapour pressure deficit (VPDleaf), while had no effect on shade leaf transpiration mainly because the negative effect of reduced VPDleaf on transpiration offset the positive effects of the increased stomatal conductance (gs). As aerosol concentration increased, the gs of both sun and shade leaves decreased more rapidly with an increase in VPDleaf, which caused their transpiration rates to become less sensitive to VPDleaf. Similarly, aerosols reduced sap flow density and its sensitivity to VPD. 4. Synthesis. Our study provided observational evidence on aerosols' effects on plant transpiration at the leaf and canopy scales. The reduced transpiration and stronger stomatal control indicated that plant water use becomes more conservative under elevated aerosol concentrations.
Persistent Identifierhttp://hdl.handle.net/10722/300895
ISSN
2021 Impact Factor: 6.381
2020 SCImago Journal Rankings: 2.452
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, B-
dc.contributor.authorWang, Z-
dc.contributor.authorWang, C-
dc.contributor.authorWang, X-
dc.contributor.authorLi, J-
dc.contributor.authorJia, Z-
dc.contributor.authorLi, P-
dc.contributor.authorWu, J-
dc.contributor.authorChen, M-
dc.contributor.authorLiu, L-
dc.date.accessioned2021-07-06T03:11:42Z-
dc.date.available2021-07-06T03:11:42Z-
dc.date.issued2021-
dc.identifier.citationJournal of Ecology, 2021, v. 109 n. 5, p. 2190-2202-
dc.identifier.issn0022-0477-
dc.identifier.urihttp://hdl.handle.net/10722/300895-
dc.description.abstract1. Anthropogenic aerosols could alter multiple meteorological processes such as radiation regime and air temperature, thereby modifying plant transpiration. However, the lack of field observations at leaf and plant level hinders our ability to understand how aerosols could affect plant water use. 2. Aerosol concentrations in northern China fluctuate periodically over a wide range. Taking advantage of this unique natural experiment opportunity, we conducted a series of physiological and environmental measurements at different times of the day to explore diurnal aerosols' effect on leaf transpiration and sap flow of planted poplar saplings (Populus × canadensis Moench). 3. We found that high aerosol concentrations suppressed sun leaf transpiration by reducing leaf-to-air vapour pressure deficit (VPDleaf), while had no effect on shade leaf transpiration mainly because the negative effect of reduced VPDleaf on transpiration offset the positive effects of the increased stomatal conductance (gs). As aerosol concentration increased, the gs of both sun and shade leaves decreased more rapidly with an increase in VPDleaf, which caused their transpiration rates to become less sensitive to VPDleaf. Similarly, aerosols reduced sap flow density and its sensitivity to VPD. 4. Synthesis. Our study provided observational evidence on aerosols' effects on plant transpiration at the leaf and canopy scales. The reduced transpiration and stronger stomatal control indicated that plant water use becomes more conservative under elevated aerosol concentrations.-
dc.languageeng-
dc.publisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at https://besjournals.onlinelibrary.wiley.com/journal/13652745-
dc.relation.ispartofJournal of Ecology-
dc.rightsThis is the peer reviewed version of the following article: Journal of Ecology, 2021, v. 109 n. 5, p. 2190-2202, which has been published in final form at https://doi.org/10.1111/1365-2745.13633. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectaerosols-
dc.subjectdiffuse radiation-
dc.subjectecophysiology-
dc.subjectleaf transpiration-
dc.subjectsap flow-
dc.titleField evidence reveals conservative water use of poplar saplings under high aerosol conditions-
dc.typeArticle-
dc.identifier.emailWu, J: jinwu@hku.hk-
dc.identifier.authorityWu, J=rp02509-
dc.description.naturepostprint-
dc.identifier.doi10.1111/1365-2745.13633-
dc.identifier.scopuseid_2-s2.0-85102434064-
dc.identifier.hkuros323340-
dc.identifier.volume109-
dc.identifier.issue5-
dc.identifier.spage2190-
dc.identifier.epage2202-
dc.identifier.isiWOS:000628849900001-
dc.publisher.placeUnited Kingdom-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats