The Carbon Budget in Soils

Annual Review of Earth and Planetary Sciences - Tập 29 Số 1 - Trang 535-562 - 2001
Ronald Amundson1
1Division of Ecosystem Sciences, University of California, Berkeley, California 94720;

Tóm tắt

▪ Abstract  The global soil C reservoir, ∼1500 Gt of C (1 Gt = 1012kg 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 CO2in 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.“I am fire and air; my other elements I give to baser life”     —William Shakespeare, Antony and Cleopatra

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