Temperature sensitivity of soil carbon decomposition and feedbacks to climate change

@article{Davidson2006TemperatureSO,
  title={Temperature sensitivity of soil carbon decomposition and feedbacks to climate change},
  author={Eric A. Davidson and Ivan A. Janssens},
  journal={Nature},
  year={2006},
  volume={440},
  pages={165-173}
}
Significantly more carbon is stored in the world's soils—including peatlands, wetlands and permafrost—than is present in the atmosphere. Disagreement exists, however, regarding the effects of climate change on global soil carbon stocks. If carbon stored belowground is transferred to the atmosphere by a warming-induced acceleration of its decomposition, a positive feedback to climate change would occur. Conversely, if increases of plant-derived carbon inputs to soils exceed increases in… 
Temperature Sensitivity of Soil Carbon Decomposition Molecular Controls and Environmental Feedbacks
The world’s soils contain three times as much carbon as the atmosphere. Thus, any changes in this carbon pool may affect atmospheric CO2 levels with implications for climate change. Anthropogenic
Temperature sensitivity of soil carbon fractions in boreal forest soil.
TLDR
It is shown that the temperature sensitivity of decomposition increases remarkably from the youngest annually cycling fraction to a decadally cycling one but decreases again to a centennially cycling fraction in boreal forest soil.
Temperature sensitivity of soil carbon decomposition
The world's soils contain three times as much carbon as the atmosphere. Thus, any changes in this carbon pool may affect atmospheric CO₂ levels with implications for climate change. Anthropogenic
Biogeochemistry: Projections of the soil-carbon deficit
TLDR
The authors find that the effects of warming are contingent upon the size of the initial soil carbon stock, with considerable carbon losses occurring in high-latitude areas.
Temperature sensitivity of mineral soil carbon decomposition in shrub and graminoid tundra, west Greenland
BackgroundShrub expansion is transforming Arctic tundra landscapes, but the impact on the large pool of carbon stored in high-latitude soils is poorly understood. Soil carbon decomposition is a
Temperature sensitivity of soil respiration rates enhanced by microbial community response
TLDR
It is found that the substantial carbon stores in Arctic and boreal soils could be more vulnerable to climate warming than currently predicted.
Biogeographic variation in temperature sensitivity of decomposition in forest soils
TLDR
Quantifying C decomposition and its response to temperature change with an incubation study of soils in China highlights that climate-related biogeographic variation in soil C responses to temperature needs to be included in next-generation C cycle models to improve predictions of C-climate feedback.
Climate and vegetation effects on the northern peatland carbon cycle
Anthropogenic emissions of the greenhouse gases carbon dioxide and methane have stimulated a rise in global surface temperature of 0.76 �C since the turn of the 20th Century. Such climate warming has
...
...

References

SHOWING 1-10 OF 126 REFERENCES
Biogeochemistry: Soil warming and organic carbon content
TLDR
It is believed that positive feedback to global warming is still a concern and Giardina and Ryan's results are undermined by methodological factors and also by their turnover times being estimated on the assumption that soil carbon exists as a single homogeneous pool, which can mask the dynamics of a smaller, temperature-dependent soil-carbon fraction.
Will changes in soil organic carbon act as a positive or negative feedback on global warming?
The world's soils contain about 1500 Gt of organic carbon to a depth of 1m and a further 900 Gt from 1--2m. A change of total soil organic carbon by just 10% would thus be equivalent to all the
Soil warming and organic carbon content
Soil warming and organic carbon content Soils store two or three times more carbon than exists in the atmosphere as CO2, and it is thought that the temperature sensitivity of decomposing organic
Soil warming and carbon-cycle feedbacks to the climate system.
TLDR
It is shown that whereas soil warming accelerates soil organic matter decay and carbon dioxide fluxes to the atmosphere, this response is small and short-lived for a mid-latitude forest, because of the limited size of the labile soil carbon pool.
CO2 EMISSIONS FROM SOIL IN RESPONSE TO CLIMATIC WARMING ARE OVERESTIMATED:THE DECOMPOSITION OF OLD SOIL ORGANIC MATTER IS TOLERANT OF TEMPERATURE
TLDR
Measurements of the amount and age of soil C and the decomposition of litter on temperature gradients and a simple model describing soil C dynamics are used to show that the decompositions of old soil organic matter is resistant to changes in temperature.
Long-term sensitivity of soil carbon turnover to warming
TLDR
Evidence is presented that non-labile SOC is more sensitive to temperature than labile SOC, implying that the long-term positive feedback of soil decomposition in a warming world may be even stronger than predicted by global models.
Acclimatization of soil respiration to warming in a tall grass prairie
TLDR
Observations in a tall grass prairie ecosystem in the US Great Plains indicate that the temperature sensitivity of soil respiration decreases—or acclimatizes—under warming and that the acclim atization is greater at high temperatures, which may weaken the positive feedback between the terrestrial carbon cycle and climate.
Soil Carbon Storage Response to Temperature: an Hypothesis
TLDR
A simple analytical model and a complex multi-pool soil carbon model are presented, which separate transfers between pools due to physico-chemical reactions from those associated with microbial respiration.
Uncertainties in the temperature sensitivity of decomposition in tropical and subtropical ecosystems: Implications for models
Tropical ecosystems play a central role in the global carbon cycle. Large changes in tropical temperature over geologic time and the significant responses of tropical ecosystems to shorter‐term
Global climate change and soil carbon stocks; predictions from two contrasting models for the turnover of organic carbon in soil
Enhanced release of CO2 to the atmosphere from soil organic carbon as a result of increased temperatures may lead to a positive feedback between climate change and the carbon cycle, resulting in much
...
...