File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Partitioning evapotranspiration flux components in a subalpine shrubland based on stable isotopic measurements

TitlePartitioning evapotranspiration flux components in a subalpine shrubland based on stable isotopic measurements
Authors
KeywordsEvapotranspiration
Flux Partitioning
Quercus Aquifolioides
Semiarid Shrubland
Stable Isotopes
Issue Date2008
PublisherAcademia Sinica, Institute of Plant and Microbial Biology. The Journal's web site is located at http://ejournal.sinica.edu.tw/bbas/
Citation
Botanical Studies, 2008, v. 49 n. 4, p. 351-361 How to Cite?
AbstractSoil, vegetation and atmospheric water vapor (0.1∼3 m above ground) were sampled in a subalpine shrubland covered with Quercus aquifolioides during three days in the early monsoon period in Wolong Nature Reserve, China. In June 2006, the average LAI of Q. aquifolioides was 2.05 m2 m-2 and the average community coverage was more than 90%. Isotope turbulent mixing relationships, isotopic values of transpired water from plants and that of evaporating water vapor from soil surface were used to estimate fractions of transpiration and evaporation contributing to the total evapotranspiration (ET). The method worked well for δD, but it was imprecise for δ18O because the minute isotopic differences between transpired water and soil water. The results from δD showed that fractional contributions of plant transpiration to ET were 74.5±9.9%, 65.6±8.3% and 96.9±2.0% on 21st, 24th and 25th June, 2006, respectively, implying that ET is mostly generated by plant transpiration. Notably, the transpiration from herbage layer for ET was likewise important as that from shrub layer. Our approach is useful for partitioning ET in semiarid subalpine shrubland at an ecosystem scale on short time steps. This approach improves the understanding of water exchange in semiarid ecosystems, and offers an opportunity to measure and validate component fluxes with accurate spatial representation at a common scale.
Persistent Identifierhttp://hdl.handle.net/10722/91383
ISSN
2013 Impact Factor: 0.809
2015 SCImago Journal Rankings: 0.401
References

 

DC FieldValueLanguage
dc.contributor.authorXu, Zen_HK
dc.contributor.authorYang, Hen_HK
dc.contributor.authorLiu, Fen_HK
dc.contributor.authorAn, Sen_HK
dc.contributor.authorCui, Jen_HK
dc.contributor.authorWang, Zen_HK
dc.contributor.authorLiu, Sen_HK
dc.date.accessioned2010-09-17T10:18:23Z-
dc.date.available2010-09-17T10:18:23Z-
dc.date.issued2008en_HK
dc.identifier.citationBotanical Studies, 2008, v. 49 n. 4, p. 351-361en_HK
dc.identifier.issn1817-406Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/91383-
dc.description.abstractSoil, vegetation and atmospheric water vapor (0.1∼3 m above ground) were sampled in a subalpine shrubland covered with Quercus aquifolioides during three days in the early monsoon period in Wolong Nature Reserve, China. In June 2006, the average LAI of Q. aquifolioides was 2.05 m2 m-2 and the average community coverage was more than 90%. Isotope turbulent mixing relationships, isotopic values of transpired water from plants and that of evaporating water vapor from soil surface were used to estimate fractions of transpiration and evaporation contributing to the total evapotranspiration (ET). The method worked well for δD, but it was imprecise for δ18O because the minute isotopic differences between transpired water and soil water. The results from δD showed that fractional contributions of plant transpiration to ET were 74.5±9.9%, 65.6±8.3% and 96.9±2.0% on 21st, 24th and 25th June, 2006, respectively, implying that ET is mostly generated by plant transpiration. Notably, the transpiration from herbage layer for ET was likewise important as that from shrub layer. Our approach is useful for partitioning ET in semiarid subalpine shrubland at an ecosystem scale on short time steps. This approach improves the understanding of water exchange in semiarid ecosystems, and offers an opportunity to measure and validate component fluxes with accurate spatial representation at a common scale.en_HK
dc.languageengen_HK
dc.publisherAcademia Sinica, Institute of Plant and Microbial Biology. The Journal's web site is located at http://ejournal.sinica.edu.tw/bbas/en_HK
dc.relation.ispartofBotanical Studiesen_HK
dc.subjectEvapotranspirationen_HK
dc.subjectFlux Partitioningen_HK
dc.subjectQuercus Aquifolioidesen_HK
dc.subjectSemiarid Shrublanden_HK
dc.subjectStable Isotopesen_HK
dc.titlePartitioning evapotranspiration flux components in a subalpine shrubland based on stable isotopic measurementsen_HK
dc.typeArticleen_HK
dc.identifier.emailLiu, F:fordliu@hku.hken_HK
dc.identifier.authorityLiu, F=rp1358en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-58149093184en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-58149093184&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume49en_HK
dc.identifier.issue4en_HK
dc.identifier.spage351en_HK
dc.identifier.epage361en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats