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Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation
Biochar amendment is a good means of mitigating methane (CH(4)) and nitrous oxide (N(2)O) emissions. However, the effects of biochar amendment on N(2)O and CH(4) reduction in soil under rotation with different soil moisture contents is not well understood. To understand CH(4) and N(2)O flux from soi...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6872536/ https://www.ncbi.nlm.nih.gov/pubmed/31754121 http://dx.doi.org/10.1038/s41598-019-53044-1 |
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author | Huang, Yibin Wang, Chengji Lin, Cheng Zhang, Yushu Chen, Xi Tang, Lina Liu, Cenwei Chen, Qingrong Onwuka, Mabel Ifeoma Song, Tieying |
author_facet | Huang, Yibin Wang, Chengji Lin, Cheng Zhang, Yushu Chen, Xi Tang, Lina Liu, Cenwei Chen, Qingrong Onwuka, Mabel Ifeoma Song, Tieying |
author_sort | Huang, Yibin |
collection | PubMed |
description | Biochar amendment is a good means of mitigating methane (CH(4)) and nitrous oxide (N(2)O) emissions. However, the effects of biochar amendment on N(2)O and CH(4) reduction in soil under rotation with different soil moisture contents is not well understood. To understand CH(4) and N(2)O flux from soil with biochar amendment under water-unsaturated and water-saturated conditions, a field experiment was conducted in a tobacco-rice rotation field in subtropical China to investigate N(2)O and CH(4) emissions following soil amendment with tobacco straw biochar at rates of 0, 10, 40 and 80 t·ha(−1) (B0, B10, B40 and B80, respectively). N(2)O and CH(4) emissions were monitored by a closed-chamber method in the water-unsaturated tobacco (UT) and water-saturated rice (SR) seasons during the 2015 planting season. The soil pH increased from 5.4 in the control to 6.1 in the soil amended with biochar at 80 t·ha(−1) in the UT season. During both the UT and SR seasons, with biochar amendment at 40 and 80 t·ha(−1), the soil bulk density (BD) decreased, while the soil organic matter (SOM) and available potassium (Av. K) contents increased. N(2)O flux was significantly greater in UT than in SR in the controls but decreased with the application of biochar during both the UT and SR seasons. The cumulative CH(4) emission decreased with the rate of biochar application and the methanotroph pmoA gene copy number in soils and increased with the methanogenic archaea 16Sr DNA gene copy number in soils during the rice-cropping season. These results indicated that biochar amendment could decrease methanogenic archaea and increase of methanotroph pmoA gene, which are the mechanistic origin for CH(4) reduction. |
format | Online Article Text |
id | pubmed-6872536 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-68725362019-12-04 Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation Huang, Yibin Wang, Chengji Lin, Cheng Zhang, Yushu Chen, Xi Tang, Lina Liu, Cenwei Chen, Qingrong Onwuka, Mabel Ifeoma Song, Tieying Sci Rep Article Biochar amendment is a good means of mitigating methane (CH(4)) and nitrous oxide (N(2)O) emissions. However, the effects of biochar amendment on N(2)O and CH(4) reduction in soil under rotation with different soil moisture contents is not well understood. To understand CH(4) and N(2)O flux from soil with biochar amendment under water-unsaturated and water-saturated conditions, a field experiment was conducted in a tobacco-rice rotation field in subtropical China to investigate N(2)O and CH(4) emissions following soil amendment with tobacco straw biochar at rates of 0, 10, 40 and 80 t·ha(−1) (B0, B10, B40 and B80, respectively). N(2)O and CH(4) emissions were monitored by a closed-chamber method in the water-unsaturated tobacco (UT) and water-saturated rice (SR) seasons during the 2015 planting season. The soil pH increased from 5.4 in the control to 6.1 in the soil amended with biochar at 80 t·ha(−1) in the UT season. During both the UT and SR seasons, with biochar amendment at 40 and 80 t·ha(−1), the soil bulk density (BD) decreased, while the soil organic matter (SOM) and available potassium (Av. K) contents increased. N(2)O flux was significantly greater in UT than in SR in the controls but decreased with the application of biochar during both the UT and SR seasons. The cumulative CH(4) emission decreased with the rate of biochar application and the methanotroph pmoA gene copy number in soils and increased with the methanogenic archaea 16Sr DNA gene copy number in soils during the rice-cropping season. These results indicated that biochar amendment could decrease methanogenic archaea and increase of methanotroph pmoA gene, which are the mechanistic origin for CH(4) reduction. Nature Publishing Group UK 2019-11-21 /pmc/articles/PMC6872536/ /pubmed/31754121 http://dx.doi.org/10.1038/s41598-019-53044-1 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Huang, Yibin Wang, Chengji Lin, Cheng Zhang, Yushu Chen, Xi Tang, Lina Liu, Cenwei Chen, Qingrong Onwuka, Mabel Ifeoma Song, Tieying Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation |
title | Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation |
title_full | Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation |
title_fullStr | Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation |
title_full_unstemmed | Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation |
title_short | Methane and Nitrous Oxide Flux after Biochar Application in Subtropical Acidic Paddy Soils under Tobacco-Rice Rotation |
title_sort | methane and nitrous oxide flux after biochar application in subtropical acidic paddy soils under tobacco-rice rotation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6872536/ https://www.ncbi.nlm.nih.gov/pubmed/31754121 http://dx.doi.org/10.1038/s41598-019-53044-1 |
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