Preprints
https://doi.org/10.5194/essd-2022-351
https://doi.org/10.5194/essd-2022-351
 
27 Oct 2022
27 Oct 2022
Status: this preprint is currently under review for the journal ESSD.

Annual emissions of carbon from land use, land-use change, and forestry 1850–2020

Richard A. Houghton and Andrea Castanho Richard A. Houghton and Andrea Castanho
  • Woodwell Climate Research Center, 149 Woods Hole Road, Falmouth, Massachusetts 02540, USA

Abstract. Estimates of the annual emissions of carbon from Land Use, Land-Use Change, and Forestry (LULUCF) are important for tracking global, regional, and national carbon budgets, which in turn help predict future rates of climate change and help define potential solutions for mitigation. Here we update a long-term (1850–2020) series of annual, national carbon emissions from LULUCF (Houghton and Nassikas, 2017), based largely, after 1960, on statistics of land use from the Food and Agriculture Organization (FAO) of the United Nations (Faostat, 2021). Those data suggest that rates of deforestation in the tropics (and thus net emissions of carbon) have decreased over the last ten years (2011–2020). The data also indicate that the net loss of tropical forests is greater than the net gain in croplands and pastures, and we explore three alternative interpretations of this apparent forest conversion, one of which is shifting cultivation. We note that LULUCF is not equivalent to LULCC (Land-Use and Land-Cover Change), and suggest that the difference between “land use” and “land cover” may contribute to variation among independent estimates of emissions. The calculated emissions of carbon based on LULUCF approximate the anthropogenic component of terrestrial carbon emissions, but carbon management opportunities exist for unmanaged lands as well.

Richard A. Houghton and Andrea Castanho

Status: open (until 22 Dec 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on essd-2022-351', Francesco N. Tubiello, 18 Nov 2022 reply
  • CC2: 'Comment on essd-2022-351', Francesco N. Tubiello, 21 Nov 2022 reply

Richard A. Houghton and Andrea Castanho

Data sets

Annual emissions of carbon from land use, land-use change, and forestry Houghton, Richard; Castanho, Andrea https://dataverse.harvard.edu/privateurl.xhtml?token=09ee9f75-3b93-4755-8be6-9da7ac06dd60

Richard A. Houghton and Andrea Castanho

Viewed

Total article views: 364 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
275 72 17 364 4 8
  • HTML: 275
  • PDF: 72
  • XML: 17
  • Total: 364
  • BibTeX: 4
  • EndNote: 8
Views and downloads (calculated since 27 Oct 2022)
Cumulative views and downloads (calculated since 27 Oct 2022)

Viewed (geographical distribution)

Total article views: 353 (including HTML, PDF, and XML) Thereof 353 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 27 Nov 2022
Download
Short summary
The paper updates a previous analysis of carbon emissions (annual and national) from land use, land-use change, and forestry, 1850–2020. It used data from the latest (2020) Forest Resource Assessment from the U.N., incorporated shifting cultivation, and included improvements to the bookkeeping model and recent estimates of emissions from peatlands. Net global emissions declined steadily over the decade 2011–2020 (average 0.96 PgC yr-1), falling below 1.0 PgC yr-1 for the first time in 30 years.