Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles
Biochar applied to soil can reduce nitrous oxide (N2O) emissions produced by freeze–thaw processes. Nonetheless, how biochar modification affects N2O emissions during freeze–thaw cycles is not completely clear. In our research, during freeze–thaw cycles, microcosm experiments were conducted to inves...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-10-01
|
| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.1033210/full |
| _version_ | 1811344127646760960 |
|---|---|
| author | Zhihan Yang Ruihuan She Lanfang Hu Lanfang Hu Yongxiang Yu Yongxiang Yu Yongxiang Yu Huaiying Yao Huaiying Yao Huaiying Yao |
| author_facet | Zhihan Yang Ruihuan She Lanfang Hu Lanfang Hu Yongxiang Yu Yongxiang Yu Yongxiang Yu Huaiying Yao Huaiying Yao Huaiying Yao |
| author_sort | Zhihan Yang |
| collection | DOAJ |
| description | Biochar applied to soil can reduce nitrous oxide (N2O) emissions produced by freeze–thaw processes. Nonetheless, how biochar modification affects N2O emissions during freeze–thaw cycles is not completely clear. In our research, during freeze–thaw cycles, microcosm experiments were conducted to investigate the effects of maize straw biochar (MB) or rice straw biochar (RB) addition on soil N2O emissions under different water conditions. The N2O emissions peaked at the initial stage of thawing in all the soils, and the total N2O emissions were considerably greater in the flooded soils than in the nonflooded soils. Compared with the soils without biochar addition, RB and MB amendments inhibited N2O emissions by 69 and 67%, respectively. Moreover, after biochar addition, the abundance of AOB amoA genes decreased by 9–13%. Biochar addition significantly decreased the content of microbial biomass nitrogen (MBN) in flooded soil during thawing, which was significantly correlated with N2O emissions and nitrification and denitrification communities. The PLS-PM further revealed that biochar can inhibit the production and emission of soil N2O by reducing soil MBN during soil thawing. In addition, soil moisture directly significantly affects N2O emissions and indirectly affects N2O emissions through its influence on soil physicochemical properties. Our results revealed the important function of biochar in decreasing the emission of N2O in flooded soil during freeze–thaw cycles. |
| first_indexed | 2024-04-13T19:42:13Z |
| format | Article |
| id | doaj.art-6f4d02d8cec641aaae800a1b889cc8c9 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-13T19:42:13Z |
| publishDate | 2022-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-6f4d02d8cec641aaae800a1b889cc8c92022-12-22T02:32:51ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-10-011310.3389/fmicb.2022.10332101033210Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cyclesZhihan Yang0Ruihuan She1Lanfang Hu2Lanfang Hu3Yongxiang Yu4Yongxiang Yu5Yongxiang Yu6Huaiying Yao7Huaiying Yao8Huaiying Yao9Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Hubei, ChinaResearch Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Hubei, ChinaKey Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Fujian, ChinaZhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Zhejiang, ChinaResearch Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Hubei, ChinaKey Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Fujian, ChinaZhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Zhejiang, ChinaResearch Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Hubei, ChinaKey Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Fujian, ChinaZhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Zhejiang, ChinaBiochar applied to soil can reduce nitrous oxide (N2O) emissions produced by freeze–thaw processes. Nonetheless, how biochar modification affects N2O emissions during freeze–thaw cycles is not completely clear. In our research, during freeze–thaw cycles, microcosm experiments were conducted to investigate the effects of maize straw biochar (MB) or rice straw biochar (RB) addition on soil N2O emissions under different water conditions. The N2O emissions peaked at the initial stage of thawing in all the soils, and the total N2O emissions were considerably greater in the flooded soils than in the nonflooded soils. Compared with the soils without biochar addition, RB and MB amendments inhibited N2O emissions by 69 and 67%, respectively. Moreover, after biochar addition, the abundance of AOB amoA genes decreased by 9–13%. Biochar addition significantly decreased the content of microbial biomass nitrogen (MBN) in flooded soil during thawing, which was significantly correlated with N2O emissions and nitrification and denitrification communities. The PLS-PM further revealed that biochar can inhibit the production and emission of soil N2O by reducing soil MBN during soil thawing. In addition, soil moisture directly significantly affects N2O emissions and indirectly affects N2O emissions through its influence on soil physicochemical properties. Our results revealed the important function of biochar in decreasing the emission of N2O in flooded soil during freeze–thaw cycles.https://www.frontiersin.org/articles/10.3389/fmicb.2022.1033210/fullfreezing–thawingsoil moisturebiocharnitrous oxidepaddy soil |
| spellingShingle | Zhihan Yang Ruihuan She Lanfang Hu Lanfang Hu Yongxiang Yu Yongxiang Yu Yongxiang Yu Huaiying Yao Huaiying Yao Huaiying Yao Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles Frontiers in Microbiology freezing–thawing soil moisture biochar nitrous oxide paddy soil |
| title | Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles |
| title_full | Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles |
| title_fullStr | Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles |
| title_full_unstemmed | Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles |
| title_short | Effects of biochar addition on nitrous oxide emission during soil freeze–thaw cycles |
| title_sort | effects of biochar addition on nitrous oxide emission during soil freeze thaw cycles |
| topic | freezing–thawing soil moisture biochar nitrous oxide paddy soil |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.1033210/full |
| work_keys_str_mv | AT zhihanyang effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT ruihuanshe effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT lanfanghu effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT lanfanghu effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT yongxiangyu effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT yongxiangyu effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT yongxiangyu effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT huaiyingyao effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT huaiyingyao effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles AT huaiyingyao effectsofbiocharadditiononnitrousoxideemissionduringsoilfreezethawcycles |