Prioritising Carbon Sequestration Areas in Southern Queensland using Time Series MODIS Net Primary Productivity (NPP) Imagery
Other literature type
Suarez Cadavid, L. A.
The aim of this study was to develop a method that will use satellite imagery to identify areas of high forest growth and productivity,
as a primary input in prioritising revegetation sites for carbon sequestration. Using the Moderate Resolution Imaging
Spectroradiometer (MODIS) satellite data, this study analysed the annual net primary production (NPP) values (gC/m<sup>2</sup>) of images
acquired from 2000 to 2013, covering the Condamine Catchment in southeast Queensland, Australia. With the analysis of annual
rainfall data during the same period, three transitions of "normal to dry" years were identified to represent the future climate scenario
considered in this study. The difference in the corresponding NPP values for each year was calculated, and subsequently averaged to
the get the "<i>Mean of Annual NPP Difference</i>" (MAND) map. This layer identified the areas with increased net primary production
despite the drought condition in those years. Combined with key thematic maps (i.e. regional ecosystems, land use, and tree canopy
cover), the priority areas were mapped. The results have shown that there are over 42 regional ecosystem (RE) types in the study area
that exhibited positive vegetation growth and productivity despite the decrease in annual rainfall. However, seven (7) of these RE
types represents the majority (79 %) of the total high productivity area. A total of 10,736 ha were mapped as priority revegetation
areas. This study demonstrated the use of MODIS-NPP imagery to map vegetation with high carbon sequestration rates necessary in
prioritising revegetation sites.