Sources, Sinks, and Subsidies: Terrestrial Carbon Storage in Mid-latitude Fjords

Land use effects on terrestrial carbon sources and sinks

Current and past land use practices are critical in determining the distribution and size of global terrestrial carbon (C) sources and sinks. Although fossil fuel emissions dominate the anthropogenic perturbation of the global C cycle, land use still drives the largest portion of anthropogenic emissions in a number of tropical regions of Asia. The size of the emission flux owing to land use cha...

Australia savannas: seasonal Carbon sinks and sources

Through estimations of above-and below-ground standing biomass, annual biomass increment, fine root production and turnover, litterfall, canopy respiration and total soil CO 2 efflux, a carbon balance on seasonal and yearly timescales is developed for a Eucalypt open-forest savanna in northern Australia. This carbon balance is compared to estimates of carbon fluxes derived from eddy covariance ...

Controls over carbon storage and turnover in high-latitude soils

Despite the importance of Arctic and boreal regions in the present carbon cycle, estimates of annual high-latitude carbon ̄uxes vary in sign and magnitude. Without accurate estimates of current carbon ̄uxes from Arctic and boreal ecosystems, predicting the response of these systems to global change is daunting. A number of factors control carbon turnover in high-latitude soils, but because they...

Carbon use efficiency and storage in terrestrial ecosystems.

CHAPTER 6 Management Impacts on Carbon Storage and Gas Fluxes ( C 02 , CH . Jin Mid - Latitude Cropland

Agriculrural ecosystems comprise an estimated 113 of the land surface of the earth (Houghton ec al .. 1983) a.nd include some of the mosc productive and carbon-rich soils. As a result they play a significant role in the storage and release of C within the terresrrial carbon cycle. At the same time these ecosystems are higllly impacted through human activities and thus processes determining net ...