Variable temperature sensitivity of soil organic carbon in North American forests

Christian P. Giardina; Chris Swanston; Cinzia Fissore; Gary M. King; Randy Kolka

Treesearch

Variable temperature sensitivity of soil organic carbon in North American forests

Informally Refereed

Authors:

Christian P. Giardina, Chris Swanston, Cinzia Fissore, Gary M. King, Randy Kolka

Year:

2009

Type:

Scientific Journal

Station:

Pacific Southwest Research Station

Source:

Global Change Biology. 15: 2295-2310.

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Abstract

We investigated mean residence time (MRT) for soil organic carbon (SOC) sampled from paired hardwood and pine forests located along a 22 °C mean annual temperature (MAT) gradient in North America. We used acid hydrolysis fractionation, radiocarbon analyses, long-term laboratory incubations (525-d), and a three-pool model to describe the size and kinetics of the acid insoluble C (AIC), active and slow SOC fractions in soil.

Keywords

carbon quality, Q10, radiocarbon, SOC decomposition, SOC fractionation, stable C, temperate forests

Citation

Fissore, Cinzia; Giardina, Christian P.; Swanston, Christopher W.; King, Gary M.; Kolka, Randall K. 2009. Variable temperature sensitivity of soil organic carbon in North American forests. Global Change Biology. 15: 2295-2310.