The Carbon Budget in Soils
Abstract
The global soil C reservoir, ~1500 Gt of C (1 Gt = 1012 kg of C), is dynamic on decadal time scales and is sensitive to climate and human disturbance. At present, as a result of land use, soil C is a source of atmospheric CO2 in the tropics and possibly part of a sink in northern latitudes. Here I review the processes responsible for maintaining the global soil C reservoir and what is known about how it responds to direct and indirect human perturbations.
- Publication:
-
Annual Review of Earth and Planetary Sciences
- Pub Date:
- 2001
- DOI:
- 10.1146/annurev.earth.29.1.535
- Bibcode:
- 2001AREPS..29..535A
- Keywords:
-
- ORGANIC CARBON;
- RESPIRATION;
- CULTIVATION;
- GLOBAL CHANGE