Environmental changes such as climate variability, climate change, and atmospheric CO 2 increases are likely to impact carbon stocks. Allometric relationships allow estimation of root biomass. Existing grassland carbon models that incorporate grazing, appropriately parameterized, could be used in verification. Statistics or surveys of animal stocking rates could be used for rough estimates of past and current grazing intensity. Removals Biomass is removed by livestock and other herbivores, by fire, and through detachment and decomposition.
Soil carbon is removed mainly by decomposition and erosion.
Both processes are strongly influenced by management. If continuity of management purpose is maintained, storage of carbon in soils and root biomass can provide pools that persist for years to centuries. Relationship to IPCC Guidelines Procedures for estimating grazing effects on carbon stocks are not explicitly defined in the Guidelines.