Impacts of enhanced weathering on biomass production for negative emission technologies and soil hydrology

dc.bibliographicCitation.firstPage2107eng
dc.bibliographicCitation.issue7eng
dc.bibliographicCitation.lastPage2133eng
dc.bibliographicCitation.volume17eng
dc.contributor.authorDe Oliveira Garcia, Wagner
dc.contributor.authorAmann, Thorben
dc.contributor.authorHartmann, Jens
dc.contributor.authorKarstens, Kristine
dc.contributor.authorPopp, Alexander
dc.contributor.authorBoysen, Lena R.
dc.contributor.authorSmith, Pete
dc.contributor.authorGoll, Daniel
dc.date.accessioned2021-09-10T05:30:03Z
dc.date.available2021-09-10T05:30:03Z
dc.date.issued2020
dc.description.abstractLimiting global mean temperature changes to well below 2 °C likely requires a rapid and large-scale deployment of negative emission technologies (NETs). Assessments so far have shown a high potential of biomass-based terrestrial NETs, but only a few assessments have included effects of the commonly found nutrient-deficient soils on biomass production. Here, we investigate the deployment of enhanced weathering (EW) to supply nutrients to areas of afforestation-reforestation and naturally growing forests (AR) and bioenergy grasses (BG) that are deficient in phosphorus (P), besides the impacts on soil hydrology. Using stoichiometric ratios and biomass estimates from two established vegetation models, we calculated the nutrient demand of AR and BG. Insufficient geogenic P supply limits C storage in biomass. For a mean P demand by AR and a lowgeogenic-P-supply scenario, AR would sequester 119 Gt C in biomass; for a high-geogenic-P-supply and low-AR-Pdemand scenario, 187 Gt C would be sequestered in biomass; and for a low geogenic P supply and high AR P demand, only 92 GtC would be accumulated by biomass. An average amount of ∼ 150 Gt basalt powder applied for EW would be needed to close global P gaps and completely sequester projected amounts of 190 Gt C during the years 2006-2099 for the mean AR P demand scenario (2-362 Gt basalt powder for the low-AR-P-demand and for the high-AR-P-demand scenarios would be necessary, respectively). The average potential of carbon sequestration by EW until 2099 is ∼ 12 GtC (∼ 0:2-∼ 27 Gt C) for the specified scenarios (excluding additional carbon sequestration via alkalinity production). For BG, 8 kg basaltm2 a1 might, on average, replenish the exported potassium (K) and P by harvest. Using pedotransfer functions, we show that the impacts of basalt powder application on soil hydraulic conductivity and plant-Available water, to close predicted P gaps, would depend on basalt and soil texture, but in general the impacts are marginal. We show that EW could potentially close the projected P gaps of an AR scenario and nutrients exported by BG harvest, which would decrease or replace the use of industrial fertilizers. Besides that, EW ameliorates the soil's capacity to retain nutrients and soil pH and replenish soil nutrient pools. Lastly, EW application could improve plant-Available-water capacity depending on deployed amounts of rock powder - adding a new dimension to the coupling of land-based biomass NETs with EW. © 2020 Royal Society of Chemistry. All rights reserved.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/6775
dc.identifier.urihttps://doi.org/10.34657/5822
dc.language.isoengeng
dc.publisherKatlenburg-Lindau [u.a.] : Copernicuseng
dc.relation.doihttps://doi.org/10.5194/bg-17-2107-2020
dc.relation.essn1726-4189
dc.relation.ispartofseriesBiogeosciences 17 (2020), Nr. 7eng
dc.relation.issn1726-4170
dc.rights.licenseCC BY 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.subjectalkalinityeng
dc.subjectbiological productioneng
dc.subjectbiomasseng
dc.subjectclimate changeeng
dc.subjectemission inventoryeng
dc.subjectenvironmental assessmenteng
dc.subjecthydraulic conductivityeng
dc.subjectsoil nutrienteng
dc.subjectsoil watereng
dc.subjectstoichiometryeng
dc.subjectweatheringeng
dc.subjectPoaceaeeng
dc.subject.ddc570eng
dc.subject.ddc550eng
dc.titleImpacts of enhanced weathering on biomass production for negative emission technologies and soil hydrologyeng
dc.typearticleeng
dc.typeTexteng
dcterms.bibliographicCitation.journalTitleBiogeoscienceseng
tib.accessRightsopenAccesseng
wgl.contributorPIKeng
wgl.subjectBiowissensschaften/Biologieeng
wgl.typeZeitschriftenartikeleng
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Impacts of enhanced weathering on biomass production for negative emission technologies and soil hydrology.pdf
Size:
5.93 MB
Format:
Adobe Portable Document Format
Description: