Lymburner - Combining the Atlas of Living Australia with the Dynamic_Land_Cover_Dataset_v2 to characterise the impact of vegetation distburbance events

Transcript

1. Dynamic Land Cover Dataset Version 2: characterising vegetation disturbance using DLCDv2 with the ALA Leo Lymburner Peter Tan Alexis McIntyre Geoscience Australia National Earth Observation Group
2. Introducing greenness time series 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 2000 2002 2004 2006 2008 2010 a) Low EVI Aerial view and ground photo b) High EVI Aerial view and ground photo Enhanced Vegetation Index: ‘Scattered tree scene’ Northern Territory, Australia Scattered tree scene: Trees on a background of grasses. The Enhanced Vegetation Index changes with season. Low EVI = brown High EVI = green Enhanced Vegetation Index
3. Greenness over time
4. Greenness over time
5. Greenness over time
6. National Map of Land Cover (2011) Nationally consistent Thematically comprehensive • 34 ISO (19144-2) classes MODIS AQUA and TERRA • 250 m resolution • 2002-2008 Validated • 25000 field validation sites • Field sites provided by all states and territories Version 1 – released in 2011
7. Time 2000 2012 Mapping land cover at 250 metre scale for the last decade
8. Mapping intervals Time Interval Map Number January 2001-December 2002 1 January 2002-December 2003 2 January 2003-December 2004 3 January 2004-December 2005 4 January 2005-December 2006 5 January 2006-December 2007 6 January 2007-December 2008 7 January 2008-December 2009 8 January 2009-December 2010 9 January 2010-December 2011 10 January 2011-December 2012 11
11. Using DLCDv2 to characterise vegetation disturbance events Examples • Severe tropical cyclone Monica • Black Saturday firestorm in Victoria • Lowbidgee wetland response to drought
12. Severe tropical cyclone Monica, NT, 2006
15. Impact of Severe Tropical Cyclone Monica Insert Title Here <view/master/slidemaster> Pictures courtesy CSIRO Sustainable Ecosystems
16. Change in vegetation between 2006-2007 to 2008- 2010
17. Basic comparison with ALA
18. Vegetation changes linked to the Black Saturday files
19. DLCDv2 2007-2008 (before)
20. DLCDv2 2009-2010 (after)
24. Lowbidgee wetlands Image courtesy lowbidgee.com