Towards a spatial understanding of water use of several land-cover classes: An examination of relationships amongst pre-dawn leaf water potential, vegetation water use, aridity and MODIS LAI

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dc.contributor.author Palmer, AR
dc.contributor.author Fuentes, S
dc.contributor.author Taylor, D
dc.contributor.author Macinnis-Ng, C
dc.contributor.author Zeppel, M
dc.contributor.author Yunusa, I
dc.contributor.author Eamus, D
dc.date.accessioned 2011-02-07T06:19:46Z
dc.date.issued 2010-03
dc.identifier.citation Ecohydrology, 2010, 3 (1), pp. 1 - 10
dc.identifier.issn 1936-0584
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/13211
dc.description.abstract Leaf area index (LAI) is a key physical variable which controls the exchange of water and CO2 between the earth and the atmosphere. Recent improvements in the quality of satellite-derived estimates of LAI, specifically the MODIS LAI product, have led to increased confidence in their operational use. In this study, we examined the relationship amongst MODIS LAI (Collection 5), pre-dawn leaf water potential (ψpd) (a surrogate for plant water availability), vegetation water use (ET) and pan evaporation (E0) in forest, evergreen woodland, open shrubland and savanna in Australia. We present three models which demonstrate how the MODIS LAI product can be used to make spatially explicit predictions of the state of three key physical variables, namely ψpd, the aridity index and vegetation water use. The LAI-ψpd model explains how plant available soil moisture can be predicted at a continental scale for intact forests, woodlands and savannas. In a similar manner, the aridity index (mean annual rainfall/E0) shows a powerful relationship with the MODIS LAI values. Using vegetation water use data from 16 field campaigns and published studies, we developed a MODIS LAI-ET model that provides the ability to predict both site and catchment-scale annual evapotranspiration. We test the model against independent estimates of site and catchment-scale vegetation water use. © 2009 John Wiley & Sons, Ltd.
dc.language eng
dc.relation.isbasedon 10.1002/eco.63
dc.title Towards a spatial understanding of water use of several land-cover classes: An examination of relationships amongst pre-dawn leaf water potential, vegetation water use, aridity and MODIS LAI
dc.type Journal Article
dc.parent Ecohydrology
dc.journal.volume 1
dc.journal.volume 3
dc.journal.number 1 en_US
dc.publocation Hoboken en_US
dc.publocation Germany
dc.identifier.startpage 1 en_US
dc.identifier.endpage 10 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.conference International Association for Development of the Information Society International Conference
dc.for 0502 Environmental Science and Management
dc.personcode 000006
dc.personcode 980151
dc.personcode 030005
dc.personcode 034078
dc.personcode 040345
dc.personcode 995490
dc.percentage 100 en_US
dc.classification.name Environmental Science and Management en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.date.activity 2010-07-29
dc.location.activity ISI:000275808800001 en_US
dc.location.activity Freiburg, Germany
dc.description.keywords Catchment
dc.description.keywords Evaporation
dc.description.keywords Evapotranspiration
dc.description.keywords Forest
dc.description.keywords Leaf area index
dc.description.keywords Savanna
dc.description.keywords Woodland
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - C3
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)
utslib.collection.history School of the Environment (ID: 344)


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