Temperature-associated increases in the global soil respiration record

  title={Temperature-associated increases in the global soil respiration record},
  author={Ben Bond‐Lamberty and Allison M. Thomson},
Soil respiration, RS, the flux of microbially and plant-respired carbon dioxide (CO2) from the soil surface to the atmosphere, is the second-largest terrestrial carbon flux. However, the dynamics of RS are not well understood and the global flux remains poorly constrained. Ecosystem warming experiments, modelling analyses and fundamental biokinetics all suggest that RS should change with climate. This has been difficult to confirm observationally because of the high spatial variability of RS… 
Contribution of soil respiration to the global carbon equation.
Contribution of soil respiration to the global carbon equation
Soil respiration (Rs) is the second largest carbon flux next to GPP between the terrestrial ecosystem (the largest organic carbon pool) and the atmosphere at a global scale. Given their critical role
Temporal changes in global soil respiration since 1987
This study of naturally occurring shifts in RS over recent decades has provided invaluable insights for designing more effective policies addressing future climate challenges, and modeling analysis shows a possible resuscitation of global RS rise.
Biogeosciences A global database of soil respiration data
Soil respiration –RS, the flux of CO2 from the soil to the atmosphere – is probably the least well constrained component of the terrestrial carbon cycle. Here we introduce the SRDB database, a
A new estimate of global soil respiration from 1970 to 2008
Soil respiration (Rs) is one of the key processes that underline our understanding of carbon cycle in terrestrial ecosystems. Great uncertainty remains in the previous global Rs estimates with a
The sensitivity of soil respiration to soil temperature, moisture, and carbon supply at the global scale
This study evaluates the factors driving Rs at the global scale by linking global datasets of soil moisture, soil temperature, primary productivity, and soil carbon estimates with observations of annual Rs from theSRDB and finds that calibrating models with parabolic soil moisture functions can improve predictive power over similar models with asymptotic functions of mean annual precipitation.
A global database of soil respiration data
Abstract. Soil respiration – RS, the flux of CO2 from the soil to the atmosphere – is probably the least well constrained component of the terrestrial carbon cycle. Here we introduce the SRDB
The influence of soil communities on the temperature sensitivity of soil respiration
It is found that accounting for the ecological mechanisms underpinning decomposition processes predicts climatological RS variations observed in an independent dataset (n = 312) and the importance of community composition is evident because without it RS is substantially underestimated.
Constraining estimates of global soil respiration by quantifying sources of variability
RSG is lower than in recent papers and the current benchmark for land models, and thus may change the predicted rates of terrestrial carbon turnover and the carbon to climate feedback as global temperatures rise.
New Techniques and Data for Understanding the Global Soil Respiration Flux
Soil respiration (Rs; the soil surface‐to‐atmosphere CO2 flux) has been measured in the field for decades, but only recently have we begun to assemble and leverage these small‐scale but extensive


The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate
We review measured rates of soil respiration from terrestrial and wetland ecosystems to define the annual global CO 2 flux from soils, to identify uncertainties in the global flux estimate, and to
Carbon respiration from subsurface peat accelerated by climate warming in the subarctic
Among the largest uncertainties in current projections of future climate is the feedback between the terrestrial carbon cycle and climate. Northern peatlands contain one-third of the world’s soil
Equilibrium Responses of Soil Carbon to Climate Change: Empirical and Process-Based Estimates
We use a new version of the Terrestrial Ecosystem Model (TEM), which has been parameterized to control for reactive soil organic carbon (SOC) across climatic gradients, to evaluate the sensitivity of
Temperature sensitivity of soil carbon decomposition and feedbacks to climate change
This work has suggested that several environmental constraints obscure the intrinsic temperature sensitivity of substrate decomposition, causing lower observed ‘apparent’ temperature sensitivity, and these constraints may, themselves, be sensitive to climate.
Acclimatization of soil respiration to warming in a tall grass prairie
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.
Thermal adaptation of soil microbial respiration to elevated temperature.
Using a > 15 year soil warming experiment in a mid-latitude forest, it is shown that the apparent 'acclimation' of soil respiration at the ecosystem scale results from combined effects of reductions in soil carbon pools and microbial biomass, and thermal adaptation of microbial respiration.
Constraints on the temperature sensitivity of global soil respiration from the observed interannual variability in atmospheric CO2
Carbon cycle feedbacks have been shown to be very important in predicting climate change over the next century. The response of the terrestrial carbon cycle to climate change depends on the
Soil respiration across scales: The importance of a model–data integration framework for data interpretation†
Soil respiration represents the second largest CO2 flux of the terrestrial biosphere and amounts 10 times higher than the current rate of fossil-fuel combustion. Thus, even a small change in soil
Interannual variability in global soil respiration, 1980–94
We used a climate‐driven regression model to develop spatially resolved estimates of soil‐CO2 emissions from the terrestrial land surface for each month from January 1980 to December 1994, to
Long-term sensitivity of soil carbon turnover to warming
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.