The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions
Natural montane peatlands are generally not a significant source of nitrous oxide (N<sub>2</sub>O) due to environment limitations, including phosphorus (P) scarcity and temperature lowness. Phosphorus enrichment and warming caused by global change are altering these limitations, and are...
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| Format: | Article |
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MDPI AG
2023-11-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/12/2947 |
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| author | Boli Yi Fan Lu Xu Chen Jiaqi Zhang Jun-Xiao Ma An Chang Zhao-Jun Bu |
| author_facet | Boli Yi Fan Lu Xu Chen Jiaqi Zhang Jun-Xiao Ma An Chang Zhao-Jun Bu |
| author_sort | Boli Yi |
| collection | DOAJ |
| description | Natural montane peatlands are generally not a significant source of nitrous oxide (N<sub>2</sub>O) due to environment limitations, including phosphorus (P) scarcity and temperature lowness. Phosphorus enrichment and warming caused by global change are altering these limitations, and are likely to increase the source function of N<sub>2</sub>O. However, the combined effects of P addition and warming on N<sub>2</sub>O fluxes and biotic/abiotic factors in peatlands are still uncertain. To address this, we investigated the long-term (12 yrs) effects of P addition (5 and 10 kg ha<sup>−1</sup> yr<sup>−1</sup>) and its interaction with warming on N<sub>2</sub>O fluxes in a peatland. The results showed that although long-term P addition did not significantly affect the source/sink function of N<sub>2</sub>O in the peatland, it stimulated enzyme activities and promoted peat decomposition. However, warming amplified the effect of P addition to increase N<sub>2</sub>O emissions by stimulating enzyme activities and changing soil stoichiometry, so even turned the peatland into a significant source of N<sub>2</sub>O with an emission of approximate 100 g m<sup>−2</sup> during the growing season. Our study suggests that P enrichment against the current background of global warming will enhance the possibility of strong N<sub>2</sub>O emissions in montane peatlands, which may increase the risk that global warming will be further aggravated. |
| first_indexed | 2024-03-08T21:05:04Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-08T21:05:04Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-f4d8aa390fa94b35a515392eb3a9578f2023-12-22T13:46:25ZengMDPI AGAgronomy2073-43952023-11-011312294710.3390/agronomy13122947The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O EmissionsBoli Yi0Fan Lu1Xu Chen2Jiaqi Zhang3Jun-Xiao Ma4An Chang5Zhao-Jun Bu6Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun 130024, ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun 130024, ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun 130024, ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun 130024, ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun 130024, ChinaCollege of Geographical Sciences, Inner Mongolia Normal University, Hohhot 010022, ChinaKey Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun 130024, ChinaNatural montane peatlands are generally not a significant source of nitrous oxide (N<sub>2</sub>O) due to environment limitations, including phosphorus (P) scarcity and temperature lowness. Phosphorus enrichment and warming caused by global change are altering these limitations, and are likely to increase the source function of N<sub>2</sub>O. However, the combined effects of P addition and warming on N<sub>2</sub>O fluxes and biotic/abiotic factors in peatlands are still uncertain. To address this, we investigated the long-term (12 yrs) effects of P addition (5 and 10 kg ha<sup>−1</sup> yr<sup>−1</sup>) and its interaction with warming on N<sub>2</sub>O fluxes in a peatland. The results showed that although long-term P addition did not significantly affect the source/sink function of N<sub>2</sub>O in the peatland, it stimulated enzyme activities and promoted peat decomposition. However, warming amplified the effect of P addition to increase N<sub>2</sub>O emissions by stimulating enzyme activities and changing soil stoichiometry, so even turned the peatland into a significant source of N<sub>2</sub>O with an emission of approximate 100 g m<sup>−2</sup> during the growing season. Our study suggests that P enrichment against the current background of global warming will enhance the possibility of strong N<sub>2</sub>O emissions in montane peatlands, which may increase the risk that global warming will be further aggravated.https://www.mdpi.com/2073-4395/13/12/2947nitrous oxide emissionsenzyme activitiesmontane peatland soilsglobal changelong-term effect |
| spellingShingle | Boli Yi Fan Lu Xu Chen Jiaqi Zhang Jun-Xiao Ma An Chang Zhao-Jun Bu The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions Agronomy nitrous oxide emissions enzyme activities montane peatland soils global change long-term effect |
| title | The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions |
| title_full | The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions |
| title_fullStr | The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions |
| title_full_unstemmed | The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions |
| title_short | The Effect of Warming-Amplified Phosphorus Addition on a Peatland’s N<sub>2</sub>O Emissions |
| title_sort | effect of warming amplified phosphorus addition on a peatland s n sub 2 sub o emissions |
| topic | nitrous oxide emissions enzyme activities montane peatland soils global change long-term effect |
| url | https://www.mdpi.com/2073-4395/13/12/2947 |
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