Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity

Liang, Di; Robertson, G. Philip

doi:10.5061/dryad.37pvmcvkz

Title: Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity

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Abstract

The long-term contribution of nitrification to nitrous oxide (N2O) emissions from terrestrial ecosystems is poorly known and thus poorly constrained in biogeochemical models. Here, using Bayesian inference to couple 25 years of in situ N2O flux measurements with site-specific Michaelis-Menten kinetics of nitrification-derived N2O, we test the relative importance of nitrification-derived N2O across six cropped and unmanaged ecosystems along a management intensity gradient in the U.S. Midwest. We found that the maximum potential contribution from nitrification to in situ N2O fluxes was 13-17% in a conventionally fertilized annual cropping system, 27-42% in a low-input cover-cropped annual cropping system, and 52-63% in perennial systems including a late successional deciduous forest. Actual values are likely to be less than 10% of these values because of low N2O yields in cultured nitrifiers (typically 0.04 to 8% of NH3 oxidized) and competing sinks for available NH4+ in situ. Most nitrification-derived N2O was produced by ammonia oxidizing bacteria (AOB) rather than archaea (AOA), who appeared responsible for no more than 30% of nitrification-derived N2O production in all but one ecosystem. Although the proportion of nitrification-derived N2O production was lowest in annual cropping systems, these ecosystems nevertheless produced more nitrification-derived N2O (higher Vmax) than perennial andmore »« less

Authors:

Liang, Di;

Michigan State Univ., East Lansing, MI (United States); OSTI
Michigan State Univ., East Lansing, MI (United States)

Publication Date:: Mon Sep 13 04:00:00 UTC 2021

DOE Contract Number:: SC0018409; FC02-07ER64494

Research Org.:: Great Lakes Bioenergy Research Center, Madison, WI (United States); Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

Subject:: 54 ENVIRONMENTAL SCIENCES

OSTI Identifier:: 1874039

DOI:: https://doi.org/10.5061/dryad.37pvmcvkz

Citation Formats


                    Liang, Di, and Robertson, G. Philip. Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity.  United States: N. p., 2021. 
        Web.  doi:10.5061/dryad.37pvmcvkz.

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                    Liang, Di, & Robertson, G. Philip. Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity.  United States.  doi:https://doi.org/10.5061/dryad.37pvmcvkz

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                    Liang, Di, and Robertson, G. Philip. 2021.  
"Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity".  United States.  doi:https://doi.org/10.5061/dryad.37pvmcvkz.  https://www.osti.gov/servlets/purl/1874039. Pub date:Mon Sep 13 04:00:00 UTC 2021

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@article{osti_1874039,

  title        = {Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity},

  author       = {Liang, Di and Robertson, G. Philip},

  abstractNote = {The long-term contribution of nitrification to nitrous oxide (N2O) emissions from terrestrial ecosystems is poorly known and thus poorly constrained in biogeochemical models. Here, using Bayesian inference to couple 25 years of in situ N2O flux measurements with site-specific Michaelis-Menten kinetics of nitrification-derived N2O, we test the relative importance of nitrification-derived N2O across six cropped and unmanaged ecosystems along a management intensity gradient in the U.S. Midwest. We found that the maximum potential contribution from nitrification to in situ N2O fluxes was 13-17% in a conventionally fertilized annual cropping system, 27-42% in a low-input cover-cropped annual cropping system, and 52-63% in perennial systems including a late successional deciduous forest. Actual values are likely to be less than 10% of these values because of low N2O yields in cultured nitrifiers (typically 0.04 to 8% of NH3 oxidized) and competing sinks for available NH4+ in situ. Most nitrification-derived N2O was produced by ammonia oxidizing bacteria (AOB) rather than archaea (AOA), who appeared responsible for no more than 30% of nitrification-derived N2O production in all but one ecosystem. Although the proportion of nitrification-derived N2O production was lowest in annual cropping systems, these ecosystems nevertheless produced more nitrification-derived N2O (higher Vmax) than perennial and successional ecosystems. We conclude that nitrification is minor relative to other sources of N2O in all ecosystems examined.},

  doi          = {10.5061/dryad.37pvmcvkz},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Sep 13 04:00:00 UTC 2021},

  month        = {Mon Sep 13 04:00:00 UTC 2021}

}

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DOI: https://doi.org/10.5061/dryad.37pvmcvkz

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Abstract The long‐term contribution of nitrification to nitrous oxide (N ₂ O) emissions from terrestrial ecosystems is poorly known and thus poorly constrained in biogeochemical models. Here, using Bayesian inference to couple 25 years of in situ N ₂ O flux measurements with site‐specific Michaelis–Menten kinetics of nitrification‐derived N ₂ O, we test the relative importance of nitrification‐derived N ₂ O across six cropped and unmanaged ecosystems along a management intensity gradient in the U.S. Midwest. We found that the maximum potential contribution from nitrification to in situ N ₂ O fluxes was 13%–17% in a conventionally fertilized annual cropping system,more »« less
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