>From the article: "The global mean carbon turnover time is only 23 years. This contrasts nature conservation which embrace old trees, or soil science which highlights old carbon in soils. Old trees and old carbon make up only a minute fraction of all trees and all soil carbon."
GR - Ignores the geo part of "biogeochemistry", which stores C for 100's Myrs. Also points out the difficulties of asking biology alone to store/manage C and CO2. Intergrate bio CO2 capture with geochem C storage and you might have something. For example, biomass energy production and accelerated weathering of limestone, BEAWL: biomass + combustion --> energy + CO2; CO2 + H2O + CaCO3 ---> Ca2+ + 2HCO3- ---> ocean alkalinity, or do similar with silicate minerals, kinetics permitting. Greg -------------------------------------------- On Wed, 7/1/15, Andrew Lockley <[email protected]> wrote: Subject: [geo] Biogeochemistry : historical and future perspectives To: "geoengineering" <[email protected]> Date: Wednesday, July 1, 2015, 4:19 PM Poster's note : bizarrely conflates the two common meanings of geoengineering, which I've never seen before in an academic paper -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
