Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion
Nitrogen (N) inputs and land-use conversion are management practices that affect soil greenhouse gas (GHG) and nitric oxide (NO) emissions. Here, we measured soil methane (CH<sub>4</sub>), nitrous oxide (N<sub>2</sub>O), and NO fluxes from rice fields and a peach orchard that...
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MDPI AG
2022-08-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/8/1850 |
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| author | Pinshang Xu Zhaoqiang Han Jie Wu Zhutao Li Jinyang Wang Jianwen Zou |
| author_facet | Pinshang Xu Zhaoqiang Han Jie Wu Zhutao Li Jinyang Wang Jianwen Zou |
| author_sort | Pinshang Xu |
| collection | DOAJ |
| description | Nitrogen (N) inputs and land-use conversion are management practices that affect soil greenhouse gas (GHG) and nitric oxide (NO) emissions. Here, we measured soil methane (CH<sub>4</sub>), nitrous oxide (N<sub>2</sub>O), and NO fluxes from rice fields and a peach orchard that converted from paddies to assess the impacts of nitrogen (N) inputs and land-use conversion on their emissions. Treatments included four paddy field treatments (PN0, PN160, PN220, and PN280) and one peach orchard treatment (ON280) with number indicating the N-input rate of kg N ha<sup>−1</sup>. The results showed that cumulative emissions of CH<sub>4</sub>, N<sub>2</sub>O and NO ranged from 28.6 to 85.3 kg C ha<sup>−1</sup>, 0.5 to 4.0 kg N ha<sup>−1</sup> and 0.2 to 0.3 kg N ha<sup>−1</sup> during the rice-growing season, respectively. In terms of greenhouse gas intensity, the PN280 treatment is the recommended N application rate. Land-use conversion significantly reduced the global warming potential from croplands. The conversion shifted soils from an essential source of CH<sub>4</sub> to a small net sink. In addition, N<sub>2</sub>O emissions from the rice–wheat rotation system were 1.8 times higher than from the orchard, mainly due to the difference in the N application rate. In summary, to reduce agriculture-induced GHG emissions, future research needs to focus on the effects of N inputs on rice-upland crop rotation systems. |
| first_indexed | 2024-03-09T04:49:19Z |
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| language | English |
| last_indexed | 2024-03-09T04:49:19Z |
| publishDate | 2022-08-01 |
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| series | Agronomy |
| spelling | doaj.art-e3f58d8c83484b6691d46eb992a92c002023-12-03T13:12:09ZengMDPI AGAgronomy2073-43952022-08-01128185010.3390/agronomy12081850Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use ConversionPinshang Xu0Zhaoqiang Han1Jie Wu2Zhutao Li3Jinyang Wang4Jianwen Zou5Key Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaNitrogen (N) inputs and land-use conversion are management practices that affect soil greenhouse gas (GHG) and nitric oxide (NO) emissions. Here, we measured soil methane (CH<sub>4</sub>), nitrous oxide (N<sub>2</sub>O), and NO fluxes from rice fields and a peach orchard that converted from paddies to assess the impacts of nitrogen (N) inputs and land-use conversion on their emissions. Treatments included four paddy field treatments (PN0, PN160, PN220, and PN280) and one peach orchard treatment (ON280) with number indicating the N-input rate of kg N ha<sup>−1</sup>. The results showed that cumulative emissions of CH<sub>4</sub>, N<sub>2</sub>O and NO ranged from 28.6 to 85.3 kg C ha<sup>−1</sup>, 0.5 to 4.0 kg N ha<sup>−1</sup> and 0.2 to 0.3 kg N ha<sup>−1</sup> during the rice-growing season, respectively. In terms of greenhouse gas intensity, the PN280 treatment is the recommended N application rate. Land-use conversion significantly reduced the global warming potential from croplands. The conversion shifted soils from an essential source of CH<sub>4</sub> to a small net sink. In addition, N<sub>2</sub>O emissions from the rice–wheat rotation system were 1.8 times higher than from the orchard, mainly due to the difference in the N application rate. In summary, to reduce agriculture-induced GHG emissions, future research needs to focus on the effects of N inputs on rice-upland crop rotation systems.https://www.mdpi.com/2073-4395/12/8/1850N fertilizerGHG emissionsnitric oxidefruitclimate change |
| spellingShingle | Pinshang Xu Zhaoqiang Han Jie Wu Zhutao Li Jinyang Wang Jianwen Zou Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion Agronomy N fertilizer GHG emissions nitric oxide fruit climate change |
| title | Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion |
| title_full | Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion |
| title_fullStr | Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion |
| title_full_unstemmed | Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion |
| title_short | Emissions of Greenhouse Gases and NO from Rice Fields and a Peach Orchard as Affected by N Input and Land-Use Conversion |
| title_sort | emissions of greenhouse gases and no from rice fields and a peach orchard as affected by n input and land use conversion |
| topic | N fertilizer GHG emissions nitric oxide fruit climate change |
| url | https://www.mdpi.com/2073-4395/12/8/1850 |
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