Predominance of ecophysiological controls on soil CO2 flux in a Minnesota grassland

  title={Predominance of ecophysiological controls on soil CO2 flux in a Minnesota grassland},
  author={Joseph M. Craine and David A. Wedin and F. Stuart Chapin},
  journal={Plant and Soil},
Ecosystem studies often study soil CO2 flux as a function of environmental factors, such as temperature, that affect respiration rates by changing the rate of utilization of carbon substrates. These studies tend not to include factors, such as photosynthesis, that affect the supply of carbon substrates to roots and root-associated processes. We examined the role of decreased carbohydrate source on soil CO2 flux and root respiration in an annually-burned grassland through manipulations of light… CONTINUE READING
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