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Cited by 910

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

Soil carbon sequestration and biochar as negative emission technologies

Smith, Pete·2016·Global Change Biology
DOI 10.1111/gcb.13178
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Abstract

Despite 20 years of effort to curb emissions, greenhouse gas (GHG) emissions grew faster during the 2000s than in the 1990s, which presents a major challenge for meeting the international goal of limiting warming to <2 °C relative to the preindustrial era. Most recent scenarios from integrated assessment models require large‐scale deployment of negative emissions technologies (NET s) to reach the 2 °C target. A recent analysis of NET s, including direct air capture, enhanced weathering, bioenergy with carbon capture and storage and afforestation/deforestation, showed that all NET s have significant limits to implementation, including economic cost, energy requirements, land use, and water use. In this paper, I assess the potential for negative emissions from soil carbon sequestration and biochar addition to land, and also the potential global impacts on land use, water, nutrients, albedo, energy and cost. Results indicate that soil carbon sequestration and biochar have useful negative emission potential (each 0.7 GtCeq. yr−1) and that they potentially have lower impact on land, water use, nutrients, albedo, energy requirement and cost, so have fewer disadvantages than many NET s. Limitations of soil carbon sequestration as a NET centre around issues of sink saturation and reversibility. Biochar could be implemented in combination with bioenergy with carbon capture and storage. Current integrated assessment models do not represent soil carbon sequestration or biochar. Given the negative emission potential of SCS and biochar and their potential advantages compared to other NET s, efforts should be made to include these options within IAM s, so that their potential can be explored further in comparison with other NET s for climate stabilization.

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Citations

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Metadata

Authors
Smith, P.
Venue
Global Change Biology
Publisher
Wiley
Published
2016-01-06
Volume
22
Issue
3
Pages
1315-1324
ISSN
  • 1354-1013 (ISSN-L)
  • 1365-2486
DOI
10.1111/gcb.13178
OpenAlex
W2230597320
Cited by
910
References
17
FWCI
79.16
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Funders
Seventh Framework Programme (289694)

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Smith, P. (2016). Soil carbon sequestration and biochar as negative emission technologies. Global Change Biology. https://doi.org/10.1111/gcb.13178

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