Hence decomposition and disturbance impacts on carbon losses are included in the net values.Īs a general principle, the overall balance of these carbon stocks is driven by the difference between carbon inputs (via plant CO 2 assimilation) and carbon losses to the atmosphere (via decomposition/microbial respiration as well as from fire/combustion). While the committee recognizes that technologies to increase carbon uptake by forestry and agriculture may cause increased emissions because of decomposition and disturbance of recalcitrant carbon in soils, virtually all the data reported are for net carbon uptake, determined from stock changes over time. Harvested woody biomass used for long-lived wood products may also accumulate and persist but is also subject to release of stored carbon as product use is discontinued-unless sequestered in a landfill. More ephemeral carbon stocks, including herbaceous biomass and plant litter with short residence times (<1 y), are generally ignored in the context of carbon sequestration because they do not represent a persistent removal of CO 2 from the atmosphere. The carbon stocks of interest are those that can accumulate and persist over multidecadal timescales, namely woody biomass and coarse woody debris and soil organic matter (SOM). Biological carbon stocks are largely controlled by actively cycling processes, that is, assimilation (carbon uptake from the atmosphere) and respiration (carbon loss to the atmosphere).

Terrestrial carbon sequestration is defined here as the increase in the amount and maintenance over time of organic carbon (OC) in biological stocks, driven by plant assimilation of CO 2 from the atmosphere. CHAPTER THREE Terrestrial Carbon Removal and Sequestration INTRODUCTION Definition of Terrestrial Carbon Sequestration

Carbon capture stocks