Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide
Peatlands, as important global nitrogen (N) pools, are potential sources of nitrous oxide (N2O) emissions. We measured N2O flux dynamics in Hani peatland in a growing season with simulating warming and N addition for 12 years in the Changbai Mountains, Northeastern China, by using static chamber-gas...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2022-01-01
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| Series: | Plant, Soil and Environment |
| Subjects: | |
| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-202201-0005_nitrogen-addition-turns-a-temperate-peatland-from-a-near-zero-source-into-a-strong-sink-of-nitrous-oxide.php |
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| author | Boli Yi Fan Lu Zhao-Jun Bu |
| author_facet | Boli Yi Fan Lu Zhao-Jun Bu |
| author_sort | Boli Yi |
| collection | DOAJ |
| description | Peatlands, as important global nitrogen (N) pools, are potential sources of nitrous oxide (N2O) emissions. We measured N2O flux dynamics in Hani peatland in a growing season with simulating warming and N addition for 12 years in the Changbai Mountains, Northeastern China, by using static chamber-gas chromatography. We hypothesised that warming and N addition would accelerate N2O emissions from the peatland. In a growing season, the peatland under natural conditions showed near-zero N2O fluxes and warming increased N2O emissions but N addition greatly increased N2O absorption compared with control. There was no interaction between warming and N addition on N2O fluxes. Pearson correlation analysis showed that water table depth was one of the main environmental factors affecting N2O fluxes and a positive relationship between them was observed. Our study suggests that the N2O source function in natural temperate peatlands maybe not be so significant as we expected before; warming can increase N2O emissions, but a high dose of N input may turn temperate peatlands to be strong sinks of N2O, and global change including warming and nitrogen deposition can alter N2O fluxes via its indirect effect on hydrology and vegetation in peatlands. |
| first_indexed | 2024-04-10T08:07:41Z |
| format | Article |
| id | doaj.art-a842510f007f47898f9bf2d158092c47 |
| institution | Directory Open Access Journal |
| issn | 1214-1178 1805-9368 |
| language | English |
| last_indexed | 2024-04-10T08:07:41Z |
| publishDate | 2022-01-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant, Soil and Environment |
| spelling | doaj.art-a842510f007f47898f9bf2d158092c472023-02-23T03:47:05ZengCzech Academy of Agricultural SciencesPlant, Soil and Environment1214-11781805-93682022-01-01681495810.17221/411/2021-PSEpse-202201-0005Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxideBoli Yi0Fan Lu1Zhao-Jun Bu2Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun, P.R. ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun, P.R. ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun, P.R. ChinaPeatlands, as important global nitrogen (N) pools, are potential sources of nitrous oxide (N2O) emissions. We measured N2O flux dynamics in Hani peatland in a growing season with simulating warming and N addition for 12 years in the Changbai Mountains, Northeastern China, by using static chamber-gas chromatography. We hypothesised that warming and N addition would accelerate N2O emissions from the peatland. In a growing season, the peatland under natural conditions showed near-zero N2O fluxes and warming increased N2O emissions but N addition greatly increased N2O absorption compared with control. There was no interaction between warming and N addition on N2O fluxes. Pearson correlation analysis showed that water table depth was one of the main environmental factors affecting N2O fluxes and a positive relationship between them was observed. Our study suggests that the N2O source function in natural temperate peatlands maybe not be so significant as we expected before; warming can increase N2O emissions, but a high dose of N input may turn temperate peatlands to be strong sinks of N2O, and global change including warming and nitrogen deposition can alter N2O fluxes via its indirect effect on hydrology and vegetation in peatlands.https://pse.agriculturejournals.cz/artkey/pse-202201-0005_nitrogen-addition-turns-a-temperate-peatland-from-a-near-zero-source-into-a-strong-sink-of-nitrous-oxide.phpclimate changegreenhouse gasdenitrificationterrestrial ecosystemsphagnum |
| spellingShingle | Boli Yi Fan Lu Zhao-Jun Bu Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide Plant, Soil and Environment climate change greenhouse gas denitrification terrestrial ecosystem sphagnum |
| title | Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide |
| title_full | Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide |
| title_fullStr | Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide |
| title_full_unstemmed | Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide |
| title_short | Nitrogen addition turns a temperate peatland from a near-zero source into a strong sink of nitrous oxide |
| title_sort | nitrogen addition turns a temperate peatland from a near zero source into a strong sink of nitrous oxide |
| topic | climate change greenhouse gas denitrification terrestrial ecosystem sphagnum |
| url | https://pse.agriculturejournals.cz/artkey/pse-202201-0005_nitrogen-addition-turns-a-temperate-peatland-from-a-near-zero-source-into-a-strong-sink-of-nitrous-oxide.php |
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