Summary
This systematic review, part 2 of a three-part assessment, synthesises the literature on seven negative emissions technologies relevant to IPCC 1.5–2°C pathways. The authors provide bottom-up estimates of costs, potentials and side-effects for BECCS, afforestation/reforestation, DACCS, enhanced weathering, ocean fertilisation, biochar and soil carbon sequestration, concluding that no single technology is likely to sustainably meet projected deployment rates and that a portfolio approach will be necessary.
UK applicability
The review's assessment of afforestation potential and soil carbon sequestration has direct relevance to UK climate policy and land use strategy. However, UK applicability of cost and potential estimates depends on local conditions, policy support and land availability constraints not specified in this global assessment.
Key measures
Cost (per tonne CO₂ removed), sustainable global potential (GtCO₂ yr⁻¹ by 2050), permanency, cumulative potential beyond 2050, environmental and social side-effects
Outcomes reported
The study synthesised literature on seven negative emissions technologies (NETs), estimating their sustainable global potentials by 2050 and assessing costs, permanency, and side-effects. Best estimates ranged from 0.5–3.6 GtCO₂ yr⁻¹ for afforestation/reforestation to 5 GtCO₂ yr⁻¹ for soil carbon sequestration.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.