Grazing management for soil carbon in Australia: A review.

Autor: McDonald SE; NSW Department of Primary Industries, Trangie Agricultural Research Centre, Trangie, NSW, 2823, Australia. Electronic address: sarah.mcdonald@dpi.nsw.gov.au., Badgery W; NSW Department of Primary Industries, Orange Agricultural Institute, 1447 Forest Rd, Orange, NSW, 2800, Australia., Clarendon S; NSW Department of Primary Industries, Tamworth Agricultural Institute, Tamworth, NSW, 2340, Australia., Orgill S; Select Carbon, 275 George St, Brisbane, Qld, 4000, Australia., Sinclair K; NSW Department of Primary Industries, Wollongbar Agricultural Institute, Wollongbar, NSW, 2477, Australia., Meyer R; School of Agriculture and Food, The University of Melbourne, Parkville, VIC, 3010, Australia., Butchart DB; Tasmanian Institute of Agriculture, University of Tasmania, Newnham, Launceston, 7248, Australia., Eckard R; School of Agriculture and Food, The University of Melbourne, Parkville, VIC, 3010, Australia., Rowlings D; Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia., Grace P; Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia., Doran-Browne N; The Mullion Group, Melbourne, VIC, 3000, Australia., Harden S; NSW Department of Primary Industries, Tamworth Agricultural Institute, Tamworth, NSW, 2340, Australia., Macdonald A; School of Agriculture and Food, The University of Melbourne, Parkville, VIC, 3010, Australia., Wellington M; Centre for Entrepreneurial Agri-Technology, Australian National University, 116 Daley Rd, Acton, Australia., Pachas ANA; QLD Department of Agriculture and Fisheries, 1 Cartwright Road, Gympie, QLD, 4570, Australia., Eisner R; Tasmanian Institute of Agriculture, University of Tasmania, Newnham, Launceston, 7248, Australia., Amidy M; Centre for Entrepreneurial Agri-Technology, Australian National University, 116 Daley Rd, Acton, Australia., Harrison MT; Tasmanian Institute of Agriculture, University of Tasmania, Newnham, Launceston, 7248, Australia.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2023 Dec 01; Vol. 347, pp. 119146. Date of Electronic Publication: 2023 Oct 16.
DOI: 10.1016/j.jenvman.2023.119146
Abstrakt: The livestock industry accounts for a considerable proportion of agricultural greenhouse gas emissions, and in response, the Australian red meat industry has committed to an aspirational target of net-zero emissions by 2030. Increasing soil carbon storage in grazing lands has been identified as one method to help achieve this, while also potentially improving production and provision of other ecosystem services. This review examined the effects of grazing management on soil carbon and factors that drive soil carbon sequestration in Australia. A systematic literature search and meta-analysis was used to compare effects of stocking intensity (stocking rate or utilisation) and stocking method (i.e, continuous, rotational or seasonal grazing systems) on soil organic carbon, pasture herbage mass, plant growth and ground cover. Impacts on below ground biomass, soil nitrogen and soil structure are also discussed. Overall, no significant impact of stocking intensity or method on soil carbon sequestration in Australia was found, although lower stocking intensity and incorporating periods of rest into grazing systems (rotational grazing) had positive effects on herbage mass and ground cover compared with higher stocking intensity or continuous grazing. Minimal impact of grazing management on pasture growth rate and below-ground biomass has been reported in Australia. However, these factors improved with grazing intensity or rotational grazing in some circumstances. While there is a lack of evidence in Australia that grazing management directly increases soil carbon, this meta-analysis indicated that grazing management practices have potential to benefit the drivers of soil carbon sequestration by increasing above and below-ground plant production, maintaining a higher residual biomass, and promoting productive perennial pasture species. Specific recommendations for future research and management are provided in the paper.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Sarah McDonald, Warwick Badgery, Simon Clarendon, Susan Orgill, Katrina Sinclair, Rachelle Meyer, Dominique Bowen Butchart, Richard Eckard, David Rowlings, Peter Grace, Natalie Doran-Browne, Ainslie Macdonald, Michael Wellington, Anibal Nahuel Pachas, Martin Amidy, Rowan Eisner, Matthew Harrison reports financial support was provided by Meat and Livestock Australia. Matthew Harrison reports financial support was provided by Australian Wool Innovation.
(Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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