Using TERN infrastructure to answer land management questions: capturing near real time greenhouse gas exchange using flux towers

Using TERN infrastructure to answer land management questions: capturing near real time greenhouse gas exchange using flux towers

Title
Publication TypeConference Paper
Year of Publication2013
AuthorsBristow, M, Assoc Prof Hutley, LB, Beringer, J, Livesley, SJ, Arndt, SK, Northwood, M
Conference Name2013 TERN Symposium
Date PublishedOnline 03/2013
PublisherTERN (Terrestrial Ecosystem Research Network)
Conference LocationCanberra, Australia
Abstract

 
With increasing interest in north Australia as a potentially exploitable resource for food and fibre production, we examine the likely impact that key land use change (LUC) events would have upon the landscape greenhouse gas (GHG) balance. Improved pastures, horticultural crops and plantation forestry are land uses that may expand in the Northern Territory. This LUC involves the clearing of savanna vegetation, with implications for GHG exchange, soil carbon and nitrogen, water resources and dry season environmental river flows. This paper outlines the power of flux tower infrastructure and measurements (TERN OzFlux platform) coupled with local chamber observations to quantify the GHG exchange and impacts on water resources from such deforestation and afforestation in tropical savannas.
 
We demonstrate the utility of flux tower data from two approaches to consider land use change. The first approach is a paired site approach using data from multiple years for two flux towers in adjacent land uses, one in savanna woodland, the other in pasture cleared 30 years prior. The second is a transitions approach using 1.5 years of flux tower data, coupled with static chambers, whereby a transition from savanna, the clearing process into agricultural land use was measured.  Flux data was continuously captured throughout each management event as the site was cleared, burnt, and cultivated.

URLhttp://www.slideshare.net/TERNCOMMS/mila-bristowwhat-is-the-impact-of-land-use-change-on-greenhouse-gas-exchange-in-tropical-savannas-17296604
Refereed DesignationNon-Refereed

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