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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
24/04/2017 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LEMOS, E. C. M.; VASCONCELOS, S. S.; SANTIAGO, M. R.; OLIVEIRA JUNIOR, M. C. M. de; SOUZA, C. M. de A. |
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Afiliação: |
E. C. M. LEMOS, UFPA; STEEL SILVA VASCONCELOS, CPATU; W. R. SANTIAGO, UFRA; M. C. M. DE OLIVEIRA JUNIOR, COLABORADOR CPATU; CLEO MARCELO DE ARAUJO SOUZA, CPATU. |
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Título: |
The responses of soil, litter and root carbon stocks to the conversion of forest regrowth to crop and tree production systems used by smallholder farmers in eastern Amazonia. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Soil Use and Management, v. 32, n. 4, p. 504-514, Dec. 2016. |
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DOI: |
10.1111/sum.12308 |
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Idioma: |
Inglês |
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Conteúdo: |
The impact of substituting forests for smallholder agricultural production systems on soil carbon (C) stocks is not well understood in Brazilian Amazonia. Most surveys of soil C stocks are restricted to the top 30 cm of soil and do not include measurements of litter and root stocks. Here, we quantify the stocks of C in soil (0?100 cm depth), aboveground litter and coarse roots of traditional (slash-and-burn) and alternative (Schizolobium amazonicum-planted forest and silvopastoral system) smallholder agricultural systems, which were compared with a reference area (forest regrowth) in the eastern Amazonia. The soil C stocks in the 0?100 cm layer were larger in the forest regrowth treatment (156.8 ± 15.5 Mg/ha) than in the other treatments (S. amazonicum = 85.3 ± 6.5, silvopastoral = 108.0 ± 4.4 Mg/ha) but did not differ from the soil C stock in the slash-and-burn treatment (127.2 ± 6.1 Mg/ha). The soil C stocks at the 0?30 cm layer, which represented 33?50% of the total C of the 0?100 cm layer, did not differ among the treatments. The litter C stocks were ranked in the following order: silvopastoral > forest regrowth > S. amazonicum > slash-and-burn. The forest regrowth treatment had a greater coarse root C stock (0.84 ± 0.10 Mg/ha) than the other treatments (silvopastoral = 0.28 ± 0.03, S. amazonicum = 0.18 ± 0.03, slash-and-burn = 0.27 ± 0.04 Mg/ha). Soil, litter and root C stocks were negatively impacted by the conversion of forest regrowth to cultivation systems. |
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Palavras-Chave: |
Corte e queima. |
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Thesagro: |
Carbono; Reflorestamento; Solo. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02306naa a2200241 a 4500
001 2068874
005 2021-12-22
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1111/sum.12308$2DOI
100 1 $aLEMOS, E. C. M.
245 $aThe responses of soil, litter and root carbon stocks to the conversion of forest regrowth to crop and tree production systems used by smallholder farmers in eastern Amazonia.$h[electronic resource]
260 $c2016
520 $aThe impact of substituting forests for smallholder agricultural production systems on soil carbon (C) stocks is not well understood in Brazilian Amazonia. Most surveys of soil C stocks are restricted to the top 30 cm of soil and do not include measurements of litter and root stocks. Here, we quantify the stocks of C in soil (0?100 cm depth), aboveground litter and coarse roots of traditional (slash-and-burn) and alternative (Schizolobium amazonicum-planted forest and silvopastoral system) smallholder agricultural systems, which were compared with a reference area (forest regrowth) in the eastern Amazonia. The soil C stocks in the 0?100 cm layer were larger in the forest regrowth treatment (156.8 ± 15.5 Mg/ha) than in the other treatments (S. amazonicum = 85.3 ± 6.5, silvopastoral = 108.0 ± 4.4 Mg/ha) but did not differ from the soil C stock in the slash-and-burn treatment (127.2 ± 6.1 Mg/ha). The soil C stocks at the 0?30 cm layer, which represented 33?50% of the total C of the 0?100 cm layer, did not differ among the treatments. The litter C stocks were ranked in the following order: silvopastoral > forest regrowth > S. amazonicum > slash-and-burn. The forest regrowth treatment had a greater coarse root C stock (0.84 ± 0.10 Mg/ha) than the other treatments (silvopastoral = 0.28 ± 0.03, S. amazonicum = 0.18 ± 0.03, slash-and-burn = 0.27 ± 0.04 Mg/ha). Soil, litter and root C stocks were negatively impacted by the conversion of forest regrowth to cultivation systems.
650 $aAmazonia
650 $aCarbono
650 $aReflorestamento
650 $aSolo
653 $aCorte e queima
700 1 $aVASCONCELOS, S. S.
700 1 $aSANTIAGO, M. R.
700 1 $aOLIVEIRA JUNIOR, M. C. M. de
700 1 $aSOUZA, C. M. de A.
773 $tSoil Use and Management$gv. 32, n. 4, p. 504-514, Dec. 2016.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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