Author : Kirschbaum, M. U. F.
Year : 2000
Title : Will changes in soil organic carbon act as a positive or negative feedback on global warming?
Journal : Biogeochemistry
Comment : The world’s soils contain about 1500 Gt of organic carbon to a depth of 1m and a further 900 Gt from 1–2m. A change of total soil organic carbon by just 10% would thus be equivalent to all the anthropogenic CO2 emitted over 30 years. Soil warming will have the effect of reducing soil organic carbon by stimulating decomposition rates more than NPP. However, increasing CO2 is likely to simultaneously have the effect of increasing soil organic carbon through increases in NPP.