Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils
IntroductionThe greenhouse gas balance is a central theme in discussions related to forest ecosystems. In this context, the present study evaluated the impact of five eucalyptus harvest residue management systems on atmospheric C-CO2 retention in soil, greenhouse gas (GHG) emissions, and the global...
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Frontiers Media S.A.
2025-08-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2025.1633436/full |
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| author | Jackson Freitas Brilhante de São José Bruno Britto Lisboa Frederico Costa Beber Vieira Josiléia Acordi Zanatta Elias Frank Araujo Juscilaine Gomes Martins Andressa Classer Bender Eduardo Carniel Cimelio Bayer Luciano Kayser Vargas |
| author_facet | Jackson Freitas Brilhante de São José Bruno Britto Lisboa Frederico Costa Beber Vieira Josiléia Acordi Zanatta Elias Frank Araujo Juscilaine Gomes Martins Andressa Classer Bender Eduardo Carniel Cimelio Bayer Luciano Kayser Vargas |
| author_sort | Jackson Freitas Brilhante de São José |
| collection | DOAJ |
| description | IntroductionThe greenhouse gas balance is a central theme in discussions related to forest ecosystems. In this context, the present study evaluated the impact of five eucalyptus harvest residue management systems on atmospheric C-CO2 retention in soil, greenhouse gas (GHG) emissions, and the global warming potential (GWP) in Eucalyptus saligna plantations.MethodsThe management systems examined were: AR - all harvest residues retained on soil; NB - harvest residues kept on soil, except bark; NBr - harvest residues kept on soil, except branches; NR - all harvest residues (bark, branches, leaves) removed; NRs - all residues from the previous rotation and new plantation litter removed using shade cloth. Soil emissions of nitrous oxide (N2O) and methane (CH4) were monitored over 12 months (October 2016 to October 2017). Soil samples were collected to a depth of one meter to assess atmospheric C-CO2 retention. Results and discussionAnnual N2O emissions were low (0.11–0.23 kg N-N2O ha−1 year−1) and showed no clear relationship with the amount of nitrogen added through residues. The soil consistently functioned as a methane sink across all management systems, with CH4 fluxes ranging from –2.56 to –3.91 kg C-CH4 ha−1 year−1. The highest rate of C-CO2 retention in soil (–5,540 kg C-CO2 ha−1 year−1) was observed under the AR management system, while the lowest (–1,752 kg C-CO2 ha−1 year−1) occurred under the NRs system. AR management also resulted in the lowest global warming potential (–33,946 kg C-CO2 ha−1 year−1), primarily due to soil C-CO2 retention (15.43%) and carbon accumulation in biomass and wood products (84.57%). These findings demonstrate that retaining eucalyptus harvest residues in subtropical sandy soils, in conjunction with carbon sequestration in wood products, constitutes an effective forest management strategy for mitigating global warming. |
| format | Article |
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| language | English |
| publishDate | 2025-08-01 |
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| spelling | doaj-art-1c6eed2a241a4d42969b904b348c00f22025-08-20T02:58:11ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2025-08-011610.3389/fpls.2025.16334361633436Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soilsJackson Freitas Brilhante de São José0Bruno Britto Lisboa1Frederico Costa Beber Vieira2Josiléia Acordi Zanatta3Elias Frank Araujo4Juscilaine Gomes Martins5Andressa Classer Bender6Eduardo Carniel7Cimelio Bayer8Luciano Kayser Vargas9Department of Agricultural Research and Diagnosis, Department of Agriculture, Livestock, Sustainable Production and Irrigation of Rio Grande do Sul, Porto Alegre, BrazilDepartment of Agricultural Research and Diagnosis, Department of Agriculture, Livestock, Sustainable Production and Irrigation of Rio Grande do Sul, Porto Alegre, BrazilUniversidade Federal do Pampa, São Gabriel, BrazilEmbrapa Floretas, Colombo, BrazilCMPC, Celulose Riograndense, Guaíba, BrazilBrazilian Institute of Environment and Renewable Natural Resources, Porto Alegre, BrazilDepartment of Soil Science, Faculty of Agronomy, Universidade Federal do Rio Grande do Sul, Porto Alegre, BrazilDepartment of Soil Science, Faculty of Agronomy, Universidade Federal do Rio Grande do Sul, Porto Alegre, BrazilDepartment of Soil Science, Faculty of Agronomy, Universidade Federal do Rio Grande do Sul, Porto Alegre, BrazilDepartment of Agricultural Research and Diagnosis, Department of Agriculture, Livestock, Sustainable Production and Irrigation of Rio Grande do Sul, Porto Alegre, BrazilIntroductionThe greenhouse gas balance is a central theme in discussions related to forest ecosystems. In this context, the present study evaluated the impact of five eucalyptus harvest residue management systems on atmospheric C-CO2 retention in soil, greenhouse gas (GHG) emissions, and the global warming potential (GWP) in Eucalyptus saligna plantations.MethodsThe management systems examined were: AR - all harvest residues retained on soil; NB - harvest residues kept on soil, except bark; NBr - harvest residues kept on soil, except branches; NR - all harvest residues (bark, branches, leaves) removed; NRs - all residues from the previous rotation and new plantation litter removed using shade cloth. Soil emissions of nitrous oxide (N2O) and methane (CH4) were monitored over 12 months (October 2016 to October 2017). Soil samples were collected to a depth of one meter to assess atmospheric C-CO2 retention. Results and discussionAnnual N2O emissions were low (0.11–0.23 kg N-N2O ha−1 year−1) and showed no clear relationship with the amount of nitrogen added through residues. The soil consistently functioned as a methane sink across all management systems, with CH4 fluxes ranging from –2.56 to –3.91 kg C-CH4 ha−1 year−1. The highest rate of C-CO2 retention in soil (–5,540 kg C-CO2 ha−1 year−1) was observed under the AR management system, while the lowest (–1,752 kg C-CO2 ha−1 year−1) occurred under the NRs system. AR management also resulted in the lowest global warming potential (–33,946 kg C-CO2 ha−1 year−1), primarily due to soil C-CO2 retention (15.43%) and carbon accumulation in biomass and wood products (84.57%). These findings demonstrate that retaining eucalyptus harvest residues in subtropical sandy soils, in conjunction with carbon sequestration in wood products, constitutes an effective forest management strategy for mitigating global warming.https://www.frontiersin.org/articles/10.3389/fpls.2025.1633436/fullreforestationcarbon stocknitrous oxidemethanesoil quality |
| spellingShingle | Jackson Freitas Brilhante de São José Bruno Britto Lisboa Frederico Costa Beber Vieira Josiléia Acordi Zanatta Elias Frank Araujo Juscilaine Gomes Martins Andressa Classer Bender Eduardo Carniel Cimelio Bayer Luciano Kayser Vargas Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils Frontiers in Plant Science reforestation carbon stock nitrous oxide methane soil quality |
| title | Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils |
| title_full | Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils |
| title_fullStr | Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils |
| title_full_unstemmed | Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils |
| title_short | Reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on Brazilian sandy soils |
| title_sort | reducing greenhouse gas emissions via harvest residue management in eucalyptus afforestation on brazilian sandy soils |
| topic | reforestation carbon stock nitrous oxide methane soil quality |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2025.1633436/full |
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