Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol
The advancement of agricultural activities without considering the soil structural conditions ceases at the expense of those environments. This study aimed at evaluating the spatial variability of aggregate stability, bulk density, total organic carbon (TOC) and carbon stock in areas of natural gras...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Goiás
2014-09-01
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| Series: | Pesquisa Agropecuária Tropical |
| Subjects: | |
| Online Access: | https://www.revistas.ufg.br/pat/article/view/25693 |
| _version_ | 1828393714016321536 |
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| author | Leandro Coutinho Alho Milton César Costa Campos Douglas Marcelo Pinheiro da Silva Bruno Campos Mantovanelli Zigomar Menezes de Souza |
| author_facet | Leandro Coutinho Alho Milton César Costa Campos Douglas Marcelo Pinheiro da Silva Bruno Campos Mantovanelli Zigomar Menezes de Souza |
| author_sort | Leandro Coutinho Alho |
| collection | DOAJ |
| description | The advancement of agricultural activities without considering the soil structural conditions ceases at the expense of those environments. This study aimed at evaluating the spatial variability of aggregate stability, bulk density, total organic carbon (TOC) and carbon stock in areas of natural grassland and forest, in the region of Humaitá, Amazonas State, Brazil. The soils were sampled at the crossing points of a grid with 70 m x 70 m, at regular intervals of 10 m, at the depths of 0.0-0.05 m, 0.05-0.10 m and 0.10-0.20 m, totaling 64 samples per depth. The results of the geostatistical analysis showed spatial dependence of attributes. The smaller ranges resulted from the constant variations in the relief of the natural grassland area. The mean values for mean weight diameter (MWD) and TOC were respectively around 3.0 mm and 29.0 g kg-1 of the surface layer, similarly to natural grassland and forest areas, confirming the proportional correlation between TOC and MWD. However, the bulk density greater than 1.40 kg dm-3 expresses the inefficiency of soil structural functions in the natural grassland area. The carbon stock contents at the different depths were more favored by TOC than by the different densification levels of the soils evaluated. |
| first_indexed | 2024-12-10T07:43:09Z |
| format | Article |
| id | doaj.art-38943fff03d64954a7ca22ca3afb5ccd |
| institution | Directory Open Access Journal |
| issn | 1983-4063 |
| language | English |
| last_indexed | 2024-12-10T07:43:09Z |
| publishDate | 2014-09-01 |
| publisher | Universidade Federal de Goiás |
| record_format | Article |
| series | Pesquisa Agropecuária Tropical |
| spelling | doaj.art-38943fff03d64954a7ca22ca3afb5ccd2022-12-22T01:57:15ZengUniversidade Federal de GoiásPesquisa Agropecuária Tropical1983-40632014-09-0144324625410.1590/S1983-40632014000300001 Spatial variability of aggregate stability and carbon stock in Cambisol and ArgisolLeandro Coutinho Alho0Milton César Costa Campos1Douglas Marcelo Pinheiro da Silva2Bruno Campos Mantovanelli3Zigomar Menezes de Souza4Universidade Federal do Amazonas (UFAM), Instituto de Educação, Agricultura e Ambiente, Humaitá, AM, Brasil.Universidade Federal do Amazonas (UFAM), Instituto de Educação, Agricultura e Ambiente, Humaitá, AM, Brasil.Universidade Federal do Amazonas (UFAM), Instituto de Educação, Agricultura e Ambiente, Humaitá, AM, Brasil.Universidade Federal do Amazonas (UFAM), Instituto de Educação, Agricultura e Ambiente, Humaitá, AM, Brasil.Universidade Estadual de Campinas (Unicamp), Faculdade de Engenharia Agrícola, Campinas, SP, Brasil.The advancement of agricultural activities without considering the soil structural conditions ceases at the expense of those environments. This study aimed at evaluating the spatial variability of aggregate stability, bulk density, total organic carbon (TOC) and carbon stock in areas of natural grassland and forest, in the region of Humaitá, Amazonas State, Brazil. The soils were sampled at the crossing points of a grid with 70 m x 70 m, at regular intervals of 10 m, at the depths of 0.0-0.05 m, 0.05-0.10 m and 0.10-0.20 m, totaling 64 samples per depth. The results of the geostatistical analysis showed spatial dependence of attributes. The smaller ranges resulted from the constant variations in the relief of the natural grassland area. The mean values for mean weight diameter (MWD) and TOC were respectively around 3.0 mm and 29.0 g kg-1 of the surface layer, similarly to natural grassland and forest areas, confirming the proportional correlation between TOC and MWD. However, the bulk density greater than 1.40 kg dm-3 expresses the inefficiency of soil structural functions in the natural grassland area. The carbon stock contents at the different depths were more favored by TOC than by the different densification levels of the soils evaluated.https://www.revistas.ufg.br/pat/article/view/25693Soil structurelandscape formsAmazon Forest |
| spellingShingle | Leandro Coutinho Alho Milton César Costa Campos Douglas Marcelo Pinheiro da Silva Bruno Campos Mantovanelli Zigomar Menezes de Souza Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol Pesquisa Agropecuária Tropical Soil structure landscape forms Amazon Forest |
| title | Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol |
| title_full | Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol |
| title_fullStr | Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol |
| title_full_unstemmed | Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol |
| title_short | Spatial variability of aggregate stability and carbon stock in Cambisol and Argisol |
| title_sort | spatial variability of aggregate stability and carbon stock in cambisol and argisol |
| topic | Soil structure landscape forms Amazon Forest |
| url | https://www.revistas.ufg.br/pat/article/view/25693 |
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