reference : Biomass-based negative emissions difficult to reconcile with planetary boundaries

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/reference/b0a0cb19-4c52-4b99-b990-0b8c77577acd
Bibliographic fields
reftype Journal Article
Abstract Under the Paris Agreement, 195 nations have committed to holding the increase in the global average temperature to well below 2 °C above pre-industrial levels and to strive to limit the increase to 1.5 °C (ref. 1 ). It is noted that this requires "a balance between anthropogenic emissions by sources and removals by sinks of greenhouse gases in the second half of the century" 1 . This either calls for zero greenhouse gas (GHG) emissions or a balance between positive and negative emissions (NE)2,3. Roadmaps and socio-economic scenarios compatible with a 2 °C or 1.5 °C goal depend upon NE via bioenergy with carbon capture and storage (BECCS) to balance remaining GHG emissions4–7. However, large-scale deployment of BECCS would imply significant impacts on many Earth system components besides atmospheric CO2 concentrations8,9. Here we explore the feasibility of NE via BECCS from dedicated plantations and potential trade-offs with planetary boundaries (PBs)10,11 for multiple socio-economic pathways. We show that while large-scale BECCS is intended to lower the pressure on the PB for climate change, it would most likely steer the Earth system closer to the PB for freshwater use and lead to further transgression of the PBs for land-system change, biosphere integrity and biogeochemical flows.
Author Heck, Vera; Gerten, Dieter; Lucht, Wolfgang; Popp, Alexander
DOI 10.1038/s41558-017-0064-y
Date 2018/02/01
ISSN 1758-6798
Issue 2
Journal Nature Climate Change
Pages 151-155
Title Biomass-based negative emissions difficult to reconcile with planetary boundaries
Volume 8
Year 2018
Bibliographic identifiers
_record_number 25198
_uuid b0a0cb19-4c52-4b99-b990-0b8c77577acd