Denitrification Is the Main Nitrous Oxide Source Process in Grassland Soils According to Quasi‐Continuous Isotopocule Analysis and Biogeochemical Modeling
نویسندگان
چکیده
منابع مشابه
Nitrous Oxide Nitrification and Denitrification
The isotopic signatures of N and O in N2O emitted from tropical soils vary both spatially and temporally, leading to large uncertainty in the overall tropical source signature and thereby limiting the utility of isotopes in constraining the global N2O budget. Determining the reasons for spatial and temporal variations in isotope signatures requires that we know the isotope enrichment factors fo...
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Nitrous Oxide Sources in Aerobic Soils: Nitrification, Denitrification and Other Biological Processes
Nitrous oxide (NrO) production in aerobic, intact soil cores collected from two forest sites was partitioned into different sources of N,O by subjecting soils to specitlc inhibitors during short-term incubations. We used acetylene (IO Pa) to selectively inhibit N,O production by nitrifiers, 100 kPa (100% v/v) 0, to inhibit N,O production by denitrifiers, and sterilixed soil to evaluate chemical...
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Arable soils are a large source of nitrous oxide (N2O) emissions, making up half of the biogenic emissions worldwide. Estimating their source strength requires methods capable of capturing the spatial and temporal variability of N2O emissions, along with the effects of crop management. Here, we applied a process-based model, CERES, with geo-referenced input data on soils, weather, and land use ...
متن کاملNitrous oxide nitrification and denitrification 15N enrichment factors from Amazon forest soils.
The isotopic signatures of 15N and 18O in N2O emitted from tropical soils vary both spatially and temporally, leading to large uncertainty in the overall tropical source signature and thereby limiting the utility of isotopes in constraining the global N2O budget. Determining the reasons for spatial and temporal variations in isotope signatures requires that we know the isotope enrichment factor...
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ژورنال
عنوان ژورنال: Global Biogeochemical Cycles
سال: 2020
ISSN: 0886-6236,1944-9224
DOI: 10.1029/2019gb006505