20170601
Author :
Chaopricha, Nina T.Marin-Spiotta, Erika.
Year :
2014
Title :
Soil burial contributes to deep soil organic carbon storage
Soil burial contributes to deep soil organic carbon storage
Journal :
Soil Biology & Biochemistry
Comment :
Understanding the source of soil organic carbon (SOC) in deep soil horizons and the processes influencing its turnover is critical for predicting the response of this large reservoir of terrestrial C to environmental change and potential feedbacks to climate.
The handful of studies that provide data on soil C stocks in buried horizons and estimate their spatial extent suggest that buried soils can contain significant regional OC reservoirs that are currently ignored in inventories and biogeochemical models.
Accelerated landscape disturbance by climate change and human activities can increase the vulnerability of SOC that has been protected from mineralization in deep horizons and increase C
losses to the atmosphere.
At the same time, increases in erosion and shifts in depositional patterns, resulting from changing climates and extreme weather patterns, could bury higher amounts of OC in the future. Our results highlight the need for landscape-level evaluations on the effects of geomorphic processes on mechanisms of SOC stabilization and incorporation of soil burial processes into soil biogeochemical models
Soil Biology & Biochemistry
Comment :
Understanding the source of soil organic carbon (SOC) in deep soil horizons and the processes influencing its turnover is critical for predicting the response of this large reservoir of terrestrial C to environmental change and potential feedbacks to climate.
The handful of studies that provide data on soil C stocks in buried horizons and estimate their spatial extent suggest that buried soils can contain significant regional OC reservoirs that are currently ignored in inventories and biogeochemical models.
Accelerated landscape disturbance by climate change and human activities can increase the vulnerability of SOC that has been protected from mineralization in deep horizons and increase C
losses to the atmosphere.
At the same time, increases in erosion and shifts in depositional patterns, resulting from changing climates and extreme weather patterns, could bury higher amounts of OC in the future. Our results highlight the need for landscape-level evaluations on the effects of geomorphic processes on mechanisms of SOC stabilization and incorporation of soil burial processes into soil biogeochemical models
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