Journal article
Multi-scale mapping of Australia’s terrestrial and blue carbon stocks and their continental and bioregional drivers
L Walden, O Serrano, M Zhang, Z Shen, JZ Sippo, LT Bennett, DT Maher, CE Lovelock, PI Macreadie, C Gorham, A Lafratta, PS Lavery, L Mosley, GMS Reithmaier, JJ Kelleway, S Dittmann, F Adame, CM Duarte, JB Gallagher, P Waryszak Show all
Communications Earth and Environment | Published : 2023
Abstract
The soil in terrestrial and coastal blue carbon ecosystems is an important carbon sink. National carbon inventories require accurate assessments of soil carbon in these ecosystems to aid conservation, preservation, and nature-based climate change mitigation strategies. Here we harmonise measurements from Australia’s terrestrial and blue carbon ecosystems and apply multi-scale machine learning to derive spatially explicit estimates of soil carbon stocks and the environmental drivers of variation. We find that climate and vegetation are the primary drivers of variation at the continental scale, while ecosystem type, terrain, clay content, mineralogy and nutrients drive subregional variations. ..
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Grants
Awarded by Australian Government
Funding Acknowledgements
R.A.V.R., L.W., Z.S., and O.S. thank the Australian Government for funding this research via grant ACSRIV000077. O.S. thanks the additional support of I+D+i projects RYC2019-027073-I and PIE HOLOCENO 20213AT014 funded by MCIN/AEI/10.13039/501100011033 and FEDER20213AT014. We thank contributions from Dr. Andy Stevens, Lindsay Hutley, and the many colleagues who contributed to the collection of soil samples and data used in this research. This work is supported by the use of (i) Terrestrial Ecosystem Research Network (TERN) infrastructure, which is enabled by the Australian Government's National Collaborative Research Infrastructure Strategy (NCRIS) and (ii) computational resources in the Pawsey Supercomputing Centre, which is funded by the Australian Government and the Government of Western Australia.