2017-01-03T14:20:04 q97

Greenhouse gas emissions from a well established, unfertilized subtropical grass-legume pasture

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Greenhouse gas emissions from a well established, unfertilized tropical grass-legume pasture were monitored over two consecutive years using high resolution automatic sampling. Nitrous oxide emissions were highest during the summer months and were highly episodic, related more to the size and distribution of rain events than WFPS alone. Mean annual emissions were significantly higher during 2008 (5.7 ± 1.0 g N2O-N ha day) than 2007 (3.9 ± 0.4 and g N2O-N ha day) despite receiving nearly 500 mm less rain. Mean CO2 (28.2 ± 1.5 kg CO2 C ha day) was not significantly different (P < 0.01) between measurement years, emissions being highly dependent on temperature. A negative correlation between CO2 and WFPS at >70% indicated threshold for soil conditions favouring denitrification. The use automatic chambers for high resolution greenhouse gas sampling can greatly reduce emission estimation errors associated with temperature and WFPS changes.

Access rights

Terms of use for the data to be determined through negotiation with the primary contact. To arrange access to this data contact the primary contact.

Geographical area of data collection

iso19139dcmiBox
northlimit=-26.5; southlimit=-28.625; westlimit=152.375; eastLimit=153.5; projection=WGS84

Publications

Scheer, Clemens, Grace, Peter, Rowlings, David, Kimber, Stephen, & Van Zwieten, Lukas (2010) Greenhouse gas emissions from intensive pasture on ferrosol in Northern NSW, Australia: Impact of biochar amendment. In Gilkes, R & Prakongkep, N (Eds.) Soil Solutions for a Changing World: proceedings of the 19th World Congress of Soil Science, 1 - 6 August 2010, Australia, Queensland, Brisbane. http://eprints.qut.edu.au/37656/
Scheer, Clemens, Grace, Peter R., Rowlings, David W., Kimber, Stephen, & Van Zwieten, Lukas (2011) Effect of biochar amendment on the soil-atmosphere exchange of greenhouse gases from an intensive subtropical pasture in northern New South Wales, Australia. Plant and Soil, 345(1-2), pp. 47-58. http://dx.doi.org/10.1007/s11104-011-0759-1
Rowlings, David, Grace, Peter, Kiese, Ralf, & Scheer, Clemens (2010) Quantifying N2O and CO2 emissions from subtropical pasture. In Gilkes, R & Prakongkep, N (Eds.) Soil Solutions for a Changing World: proceedings of the 19th World Congress of Soil Science, 1 - 6 August 2010, Australia, Queensland, Brisbane. http://eprints.qut.edu.au/37655/

Research areas

improved pasture
Subtropical
N2O
Earth sciences
CH4
Geochemistry
Humid
CO2
Atmospheric sciences
interannual

Cite this collection

Rowlings, D. (2009). Mooloolah_Pasture_2007-09. Institute for Sustainable Resources, Queensland University of Technology. Rowlings.21.1. http://n2o.org.au/knb/metacat/Rowlings.21.1/default
Grace,Peter; Rowlings,David. (2017): Greenhouse gas emissions from a well established, unfertilized subtropical grass-legume pasture. [Queensland University of Technology]. http://dx.doi.org/10.4225/09/586b25f30ba1a

Copyright

©

Dates of data collection

From 2007-03-01 to 2009-02-28

Connections

Is supported by
Metacat  (Equipment)

Contacts

Name: David Rowlings

Other

Date record created:
2010-12-06T13:31:04Z
Date record modified:
2017-01-03T14:20:04
Record status:
Published - Open Access