IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES
The conversion of the Amazon rainforest into pasture significantly impacts soil quality, affecting biodiversity, biogeochemical cycles, and carbon stocks. Studies indicate a reduction in microbial activity and biomass associated with this transformation. This study investigated the impact of conver...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Mato Grosso do Sul
2025-02-01
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| Series: | Revista de Agricultura Neotropical |
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| Online Access: | https://periodicosonline.uems.br/index.php/agrineo/article/view/8879 |
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| author | Sandra Cátia Pereira Uchôa Sasha de Souza Farage José Maria Arcanjo Alves Carlos Henrique de Lima Matos Ingridy do Nascimento Tavares Valdinar Ferreira Melo |
| author_facet | Sandra Cátia Pereira Uchôa Sasha de Souza Farage José Maria Arcanjo Alves Carlos Henrique de Lima Matos Ingridy do Nascimento Tavares Valdinar Ferreira Melo |
| author_sort | Sandra Cátia Pereira Uchôa |
| collection | DOAJ |
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The conversion of the Amazon rainforest into pasture significantly impacts soil quality, affecting biodiversity, biogeochemical cycles, and carbon stocks. Studies indicate a reduction in microbial activity and biomass associated with this transformation. This study investigated the impact of converting forest into pasture on soil attributes in the northern Amazon, specifically at the Canto Verde farm in Iracema, Roraima, Brazil. Three land use systems were analyzed: Native Forest (NF), Brachiaria brizantha (BB), and Brachiaria humidicola (BH). Soil samples were collected at two depths (0-0.10 m and 0.10-0.20 m) in four representative blocks of 1 ha in each system. Chemical, physical, and biochemical properties, and microbial and metabolic coefficients were analyzed. The results were subjected to analysis of variance and the Tukey test (p<0.05). The transition from NF to agricultural use with Brachiaria significantly altered soil attributes. There was an increase in pH in the BB and BH systems and a reduction in total organic carbon and microbial biomass. Basal respiration and dehydrogenase activity decreased, indicating stress in the transformed systems. The BH system showed higher metabolic quotient (qCO2) and lower microbial quotient (qMIC) values, highlighting the adverse effects of converting forests into pastures on soil microbiological activity. The conversion of forests into pastures negatively affects the soil, requiring sustainable agricultural practices.
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| format | Article |
| id | doaj-art-40f44e53a6c742a5a6ac424868a419af |
| institution | Kabale University |
| issn | 2358-6303 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Universidade Estadual de Mato Grosso do Sul |
| record_format | Article |
| series | Revista de Agricultura Neotropical |
| spelling | doaj-art-40f44e53a6c742a5a6ac424868a419af2025-02-11T22:16:56ZengUniversidade Estadual de Mato Grosso do SulRevista de Agricultura Neotropical2358-63032025-02-0112110.32404/rean.v12i1.8879IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIESSandra Cátia Pereira Uchôa0https://orcid.org/0000-0003-4224-070XSasha de Souza Farage1https://orcid.org/0009-0006-9062-4125José Maria Arcanjo Alves2https://orcid.org/0000-0002-8790-6838Carlos Henrique de Lima Matos3https://orcid.org/0000-0003-1747-984XIngridy do Nascimento Tavares4https://orcid.org/0000-0002-2262-9710Valdinar Ferreira Melo5https://orcid.org/0000-0002-7943-9969Universidade Federal de RoraimaUniversidade Federal de RoraimaUniversidade Federal de RoraimaInstituto Federal de Educação, Ciência e Tecnologia de Roraima Universidade Federal de RoraimaUniversidade Federal de Roraima The conversion of the Amazon rainforest into pasture significantly impacts soil quality, affecting biodiversity, biogeochemical cycles, and carbon stocks. Studies indicate a reduction in microbial activity and biomass associated with this transformation. This study investigated the impact of converting forest into pasture on soil attributes in the northern Amazon, specifically at the Canto Verde farm in Iracema, Roraima, Brazil. Three land use systems were analyzed: Native Forest (NF), Brachiaria brizantha (BB), and Brachiaria humidicola (BH). Soil samples were collected at two depths (0-0.10 m and 0.10-0.20 m) in four representative blocks of 1 ha in each system. Chemical, physical, and biochemical properties, and microbial and metabolic coefficients were analyzed. The results were subjected to analysis of variance and the Tukey test (p<0.05). The transition from NF to agricultural use with Brachiaria significantly altered soil attributes. There was an increase in pH in the BB and BH systems and a reduction in total organic carbon and microbial biomass. Basal respiration and dehydrogenase activity decreased, indicating stress in the transformed systems. The BH system showed higher metabolic quotient (qCO2) and lower microbial quotient (qMIC) values, highlighting the adverse effects of converting forests into pastures on soil microbiological activity. The conversion of forests into pastures negatively affects the soil, requiring sustainable agricultural practices. https://periodicosonline.uems.br/index.php/agrineo/article/view/8879Brachiaria BrizanthaBrachiaria humidicolaConversionNative forest |
| spellingShingle | Sandra Cátia Pereira Uchôa Sasha de Souza Farage José Maria Arcanjo Alves Carlos Henrique de Lima Matos Ingridy do Nascimento Tavares Valdinar Ferreira Melo IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES Revista de Agricultura Neotropical Brachiaria Brizantha Brachiaria humidicola Conversion Native forest |
| title | IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES |
| title_full | IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES |
| title_fullStr | IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES |
| title_full_unstemmed | IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES |
| title_short | IMPACTS OF REPLACING THE AMAZON RAINFOREST WITH PASTURE ON SOIL PROPERTIES |
| title_sort | impacts of replacing the amazon rainforest with pasture on soil properties |
| topic | Brachiaria Brizantha Brachiaria humidicola Conversion Native forest |
| url | https://periodicosonline.uems.br/index.php/agrineo/article/view/8879 |
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