Carbon balance of a tropical savanna of northern Australia

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Show simple item record Chen, X Hutley, LB Eamus, D 2009-12-21T02:29:24Z 2003-11
dc.identifier.citation Oecologia, 2003, 137 (3), pp. 405 - 416
dc.identifier.issn 0029-8549
dc.identifier.other C1 en_US
dc.description.abstract Through estimations of above- and below-ground standing biomass, annual biomass increment, fine root production and turnover, litterfall, canopy respiration and total soil CO2 efflux, a carbon balance on seasonal and yearly time-scales is developed for a Eucalypt open-forest savanna in northern Australia. This carbon balance is compared to estimates of carbon fluxes derived from eddy covariance measurements conducted at the same site. The total carbon (C) stock of the savanna was 204±53 ton C ha -1, with approximately 84% below-ground and 16% above-ground. Soil organic carbon content (0-1 m) was 151±33 ton C ha-1, accounting for about 74% of the total carbon content in the ecosystem. Vegetation biomass was 53±20 ton C ha-1, 39% of which was found in the root component and 61% in above-ground components (trees, shrubs, grasses). Annual gross primary production was 20.8 ton C ha-1, of which 27% occurred in above-ground components and 73% below-ground components. Net primary production was 11 ton C ha-1 year-1, of which 8.0 ton C ha-1 (73%) was contributed by below-ground net primary production and 3.0 ton C ha-1 (27%) by above-ground net primary production. Annual soil carbon efflux was 14.3 ton C ha-1 year -1. Approximately three-quarters of the carbon flux (above-ground, below-ground and total ecosystem) occur during the 5-6 months of the wet season. This savanna site is a carbon sink during the wet season, but becomes a weak source during the dry season. Annual net ecosystem production was 3.8 ton C ha-1 year-1.
dc.language eng
dc.relation.hasversion Accepted manuscript version
dc.relation.isbasedon 10.1007/s00442-003-1358-5
dc.title Carbon balance of a tropical savanna of northern Australia
dc.type Journal Article
dc.parent Oecologia
dc.journal.volume 3
dc.journal.volume 137
dc.publocation New York, USA en_US
dc.identifier.startpage 405 en_US
dc.identifier.endpage 416 en_US DVCRch.Institute for Water & Environmental Resource Mgmnt en_US
dc.conference Verified OK en_US
dc.conference American Society of Mechanical Engineering
dc.for 0602 Ecology
dc.personcode 000006
dc.percentage 100 en_US Ecology en_US
dc.classification.type FOR-08 en_US 2003-11-16
dc.location.activity Washington DC, USA
dc.description.keywords Carbon cycling
dc.description.keywords Carbon source-sink relationships
dc.description.keywords CO2
dc.description.keywords Net ecosystem production
dc.description.keywords Wet-dry tropics
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access 2015-04-15 12:23:47.074767+10
pubs.consider-herdc true
utslib.collection.history School of the Environment (ID: 344)
utslib.collection.history General (ID: 2)

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