Fraction of nitrous oxide production in nitrification and its effect on total soil emission: A meta-analysis and global-scale sensitivity analysis using a process-based model
Nitrification in terrestrial soils is one of the major processes of emission of nitrous oxide (N2O), a potent greenhouse gas and stratospheric-ozone-depleting substance. We assessed the fraction of N2O emission associated with nitrification in soil through a meta-analysis and sensitivity analysis us...
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| Veröffentlicht in: | PloS one 2019-07, Vol.14 (7), p.e0219159-e0219159 |
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| creator | Inatomi, Motoko Hajima, Tomohiro Ito, Akihiko |
| description | Nitrification in terrestrial soils is one of the major processes of emission of nitrous oxide (N2O), a potent greenhouse gas and stratospheric-ozone-depleting substance. We assessed the fraction of N2O emission associated with nitrification in soil through a meta-analysis and sensitivity analysis using a process-based model. We corrected observational values of gross nitrification and associated N2O emission rates from 71 records for various soils in the world spanning from 0.006% to 29.5%. We obtained a median value of 0.14%, and then assessed how the nitrification-associated N2O emission fraction has been considered in terrestrial nitrogen cycle models. Using a process-based biogeochemical model, we conducted a series of sensitivity analyses for the effects of different values of nitrification-associated N2O emission fraction on soil N2O emission. Using an empirical relationship between soil pH and nitrification-associated N2O emission fraction, the model well simulated global emission patterns (global total in the 2000s, 16.8 Tg N2O yr-1). Differences in the nitrification-associated N2O emission fraction caused differences in total N2O emission of as much as 2.5 Tg N2O yr-1. Therefore, to obtain reliable estimation of soil N2O emission for nitrogen and climate management, it is important to constrain the parameterization in models by ensuring extensive and accurate observations. |
| doi_str_mv | 10.1371/journal.pone.0219159 |
| format | Article |
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We assessed the fraction of N2O emission associated with nitrification in soil through a meta-analysis and sensitivity analysis using a process-based model. We corrected observational values of gross nitrification and associated N2O emission rates from 71 records for various soils in the world spanning from 0.006% to 29.5%. We obtained a median value of 0.14%, and then assessed how the nitrification-associated N2O emission fraction has been considered in terrestrial nitrogen cycle models. Using a process-based biogeochemical model, we conducted a series of sensitivity analyses for the effects of different values of nitrification-associated N2O emission fraction on soil N2O emission. Using an empirical relationship between soil pH and nitrification-associated N2O emission fraction, the model well simulated global emission patterns (global total in the 2000s, 16.8 Tg N2O yr-1). Differences in the nitrification-associated N2O emission fraction caused differences in total N2O emission of as much as 2.5 Tg N2O yr-1. Therefore, to obtain reliable estimation of soil N2O emission for nitrogen and climate management, it is important to constrain the parameterization in models by ensuring extensive and accurate observations.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0219159</identifier><identifier>PMID: 31291317</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Air pollution ; Algorithms ; Anesthetics ; Atmospheric ozone ; Biogeochemistry ; Biology and Life Sciences ; Climate models ; Computer simulation ; Earth science ; Ecology and Environmental Sciences ; Emission analysis ; Emissions ; Emissions (Pollution) ; Empirical analysis ; Environmental aspects ; Environmental conditions ; Flow velocity ; Greenhouse effect ; Greenhouse gases ; Hydrogen-Ion Concentration ; Measurement ; Meta-analysis ; Nitrates ; Nitrification ; Nitrogen ; Nitrogen Cycle ; Nitrogen oxides ; Nitrous oxide ; Nitrous Oxide - analysis ; Nitrous oxides ; Ozone ; Ozone depletion ; Parameterization ; Physical Sciences ; Research and Analysis Methods ; Sensitivity analysis ; Soil - chemistry ; Soil acidity ; Soil analysis ; Soil nitrogen ; Soil pH ; Soils ; Systematic review ; Terrestrial environments</subject><ispartof>PloS one, 2019-07, Vol.14 (7), p.e0219159-e0219159</ispartof><rights>COPYRIGHT 2019 Public Library of Science</rights><rights>2019 Inatomi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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We assessed the fraction of N2O emission associated with nitrification in soil through a meta-analysis and sensitivity analysis using a process-based model. We corrected observational values of gross nitrification and associated N2O emission rates from 71 records for various soils in the world spanning from 0.006% to 29.5%. We obtained a median value of 0.14%, and then assessed how the nitrification-associated N2O emission fraction has been considered in terrestrial nitrogen cycle models. Using a process-based biogeochemical model, we conducted a series of sensitivity analyses for the effects of different values of nitrification-associated N2O emission fraction on soil N2O emission. Using an empirical relationship between soil pH and nitrification-associated N2O emission fraction, the model well simulated global emission patterns (global total in the 2000s, 16.8 Tg N2O yr-1). Differences in the nitrification-associated N2O emission fraction caused differences in total N2O emission of as much as 2.5 Tg N2O yr-1. Therefore, to obtain reliable estimation of soil N2O emission for nitrogen and climate management, it is important to constrain the parameterization in models by ensuring extensive and accurate observations.</description><subject>Air pollution</subject><subject>Algorithms</subject><subject>Anesthetics</subject><subject>Atmospheric ozone</subject><subject>Biogeochemistry</subject><subject>Biology and Life Sciences</subject><subject>Climate models</subject><subject>Computer simulation</subject><subject>Earth science</subject><subject>Ecology and Environmental Sciences</subject><subject>Emission analysis</subject><subject>Emissions</subject><subject>Emissions (Pollution)</subject><subject>Empirical analysis</subject><subject>Environmental aspects</subject><subject>Environmental conditions</subject><subject>Flow velocity</subject><subject>Greenhouse effect</subject><subject>Greenhouse gases</subject><subject>Hydrogen-Ion Concentration</subject><subject>Measurement</subject><subject>Meta-analysis</subject><subject>Nitrates</subject><subject>Nitrification</subject><subject>Nitrogen</subject><subject>Nitrogen Cycle</subject><subject>Nitrogen oxides</subject><subject>Nitrous oxide</subject><subject>Nitrous Oxide - 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We assessed the fraction of N2O emission associated with nitrification in soil through a meta-analysis and sensitivity analysis using a process-based model. We corrected observational values of gross nitrification and associated N2O emission rates from 71 records for various soils in the world spanning from 0.006% to 29.5%. We obtained a median value of 0.14%, and then assessed how the nitrification-associated N2O emission fraction has been considered in terrestrial nitrogen cycle models. Using a process-based biogeochemical model, we conducted a series of sensitivity analyses for the effects of different values of nitrification-associated N2O emission fraction on soil N2O emission. Using an empirical relationship between soil pH and nitrification-associated N2O emission fraction, the model well simulated global emission patterns (global total in the 2000s, 16.8 Tg N2O yr-1). Differences in the nitrification-associated N2O emission fraction caused differences in total N2O emission of as much as 2.5 Tg N2O yr-1. Therefore, to obtain reliable estimation of soil N2O emission for nitrogen and climate management, it is important to constrain the parameterization in models by ensuring extensive and accurate observations.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>31291317</pmid><doi>10.1371/journal.pone.0219159</doi><tpages>e0219159</tpages><orcidid>https://orcid.org/0000-0001-5265-0791</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Air pollution Algorithms Anesthetics Atmospheric ozone Biogeochemistry Biology and Life Sciences Climate models Computer simulation Earth science Ecology and Environmental Sciences Emission analysis Emissions Emissions (Pollution) Empirical analysis Environmental aspects Environmental conditions Flow velocity Greenhouse effect Greenhouse gases Hydrogen-Ion Concentration Measurement Meta-analysis Nitrates Nitrification Nitrogen Nitrogen Cycle Nitrogen oxides Nitrous oxide Nitrous Oxide - analysis Nitrous oxides Ozone Ozone depletion Parameterization Physical Sciences Research and Analysis Methods Sensitivity analysis Soil - chemistry Soil acidity Soil analysis Soil nitrogen Soil pH Soils Systematic review Terrestrial environments |
| title | Fraction of nitrous oxide production in nitrification and its effect on total soil emission: A meta-analysis and global-scale sensitivity analysis using a process-based model |
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