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Registro Completo |
Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
Data corrente: |
16/01/1996 |
Data da última atualização: |
16/01/1996 |
Autoria: |
SKEFFINGTON, R. A.; BROWN, K. A. |
Afiliação: |
Central Electricity Research Laboratories. |
Título: |
The effect of five years acid treatment on leaching, soil chemistry and weathering of a humo-ferric podzol. |
Ano de publicação: |
1986 |
Fonte/Imprenta: |
Water, Air, and Soil Pollution, v.31, p.891-900, 1986. |
Idioma: |
Inglês |
Conteúdo: |
This paper describes the effect of treating a nutrient-poor forest soil in monolith lysimeters with H2SO4, pH 3.0, for 4.75 yr. The lysimeters were instrumented with porous cup probes to distinguish processes occurring in each soil horizon. In the A horizon base cation exchange and sulphate absorption were the principal proton- consuming processes whereas lower down the profile Al3+ dissolution from hydrous oxides dominated. Acid treatment thus reduced the amount of amorphous Al in the lower horizons, but exchangeable Al was unaffected. Sulphate absorption was positively correlated with the distribution of Al hydrous oxides. High rates of nitrification reduced the differences between acid and control monoliths, but acid treatment significantly reduced soilpH down to 75 cm and reduced the levels of exchangeable base cations in the litter and A horizons. Acid treatment increased the leaching rates of base cations and Al. Consideration of the total base cation content shows that acid treatment increased the rate of weathering by 0.7-1.4 k eq ha-1 yr-1. The results should be useful in modelling more realistic rates of acid input to similar soils. |
Palavras-Chave: |
Acid precipitation; Humo-ferric podzol; Intemperismo; Podzolico humico ferrico; Precipitacao acidas. |
Thesagro: |
Lisímetro; Lixiviação. |
Thesaurus Nal: |
leaching; lysimeters; weathering. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01890naa a2200253 a 4500 001 1075636 005 1996-01-16 008 1986 bl --- 0-- u #d 100 1 $aSKEFFINGTON, R. A. 245 $aThe effect of five years acid treatment on leaching, soil chemistry and weathering of a humo-ferric podzol. 260 $c1986 520 $aThis paper describes the effect of treating a nutrient-poor forest soil in monolith lysimeters with H2SO4, pH 3.0, for 4.75 yr. The lysimeters were instrumented with porous cup probes to distinguish processes occurring in each soil horizon. In the A horizon base cation exchange and sulphate absorption were the principal proton- consuming processes whereas lower down the profile Al3+ dissolution from hydrous oxides dominated. Acid treatment thus reduced the amount of amorphous Al in the lower horizons, but exchangeable Al was unaffected. Sulphate absorption was positively correlated with the distribution of Al hydrous oxides. High rates of nitrification reduced the differences between acid and control monoliths, but acid treatment significantly reduced soilpH down to 75 cm and reduced the levels of exchangeable base cations in the litter and A horizons. Acid treatment increased the leaching rates of base cations and Al. Consideration of the total base cation content shows that acid treatment increased the rate of weathering by 0.7-1.4 k eq ha-1 yr-1. The results should be useful in modelling more realistic rates of acid input to similar soils. 650 $aleaching 650 $alysimeters 650 $aweathering 650 $aLisímetro 650 $aLixiviação 653 $aAcid precipitation 653 $aHumo-ferric podzol 653 $aIntemperismo 653 $aPodzolico humico ferrico 653 $aPrecipitacao acidas 700 1 $aBROWN, K. A. 773 $tWater, Air, and Soil Pollution$gv.31, p.891-900, 1986.
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Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
02/03/2021 |
Data da última atualização: |
02/03/2021 |
Tipo da produção científica: |
Nota Técnica/Nota Científica |
Autoria: |
BRASIL NETO, A. B.; BRASIL, N. M. de Q. X.; ANDRADE, P. I. L. de; SAMPAIO, A. C. F.; NORONHA, N. C.; CARVALHO, E. J. M.; SILVA, A. R.; SCHWARTZ, G. |
Afiliação: |
Alberto Bentes Brasil Neto, IFPA; Nilza Martins de Queiroz Xavier Brasil, IFPA; Paulo Ivan Lima de Andrade, IFPA; Augusto César Falcão Sampaio, IFPA; Norberto Cornejo Noronha, UFRA; EDUARDO JORGE MAKLOUF CARVALHO, CPATU; ARYSTIDES RESENDE SILVA, CPATU; GUSTAVO SCHWARTZ, CPATU. |
Título: |
The commercial tree species Dipteryx odorata improves soil physical and biological attributes in abandoned pastures. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Ecological Engineering, v. 160, Article 106143, Feb. 2021. |
DOI: |
https://doi.org/10.1016/j.ecoleng.2020.106143 |
Idioma: |
Inglês |
Notas: |
Short communication. |
Conteúdo: |
In the Eastern Amazon, abandoned and unproductive areas are widespread and normally found as a result of soil degradation. In this study we presented the following scientific question: Is it possible to improve the quality of soil physical and biological attributes of areas previously occupied by abandoned pastures with commercial plantation of the native species Dipteryx odorata? To respond this question, the objective of this study was to evaluate the effects of D. odorata plantations after abandoned pastures on the soil physical and biological at-tributes, using the soil from a successional forest in the municipality of ́Obidos, Eastern Amazon, Brazil, as a reference. Disturbed and undisturbed soil samples were collected from depths 0?10, 10?20, and 20?40 cm to determine organic matter content, bulk density, macro-, micro-, and total porosity. Soil macrofauna was collected at depth 0?10 cm and visual evaluation of soil structure was also conducted. The plantation accu-mulated organic matter and presented higher density of the macrofauna orders Haplotaxida and Blattodea, suborder Isoptera, and promoted better soil structural quality. Results were similar to those of the reference forest and higher than those of abandoned pastures. The D. odorata plantation was therefore an effective alternative for forest recovery of degraded areas in the region. |
Palavras-Chave: |
Pastagem degradada; Plantação florestal; Qualidade do solo; Recuperação florestal. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02311naa a2200289 a 4500 001 2130443 005 2021-03-02 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.ecoleng.2020.106143$2DOI 100 1 $aBRASIL NETO, A. B. 245 $aThe commercial tree species Dipteryx odorata improves soil physical and biological attributes in abandoned pastures.$h[electronic resource] 260 $c2021 500 $aShort communication. 520 $aIn the Eastern Amazon, abandoned and unproductive areas are widespread and normally found as a result of soil degradation. In this study we presented the following scientific question: Is it possible to improve the quality of soil physical and biological attributes of areas previously occupied by abandoned pastures with commercial plantation of the native species Dipteryx odorata? To respond this question, the objective of this study was to evaluate the effects of D. odorata plantations after abandoned pastures on the soil physical and biological at-tributes, using the soil from a successional forest in the municipality of ́Obidos, Eastern Amazon, Brazil, as a reference. Disturbed and undisturbed soil samples were collected from depths 0?10, 10?20, and 20?40 cm to determine organic matter content, bulk density, macro-, micro-, and total porosity. Soil macrofauna was collected at depth 0?10 cm and visual evaluation of soil structure was also conducted. The plantation accu-mulated organic matter and presented higher density of the macrofauna orders Haplotaxida and Blattodea, suborder Isoptera, and promoted better soil structural quality. Results were similar to those of the reference forest and higher than those of abandoned pastures. The D. odorata plantation was therefore an effective alternative for forest recovery of degraded areas in the region. 650 $aAmazonia 653 $aPastagem degradada 653 $aPlantação florestal 653 $aQualidade do solo 653 $aRecuperação florestal 700 1 $aBRASIL, N. M. de Q. X. 700 1 $aANDRADE, P. I. L. de 700 1 $aSAMPAIO, A. C. F. 700 1 $aNORONHA, N. C. 700 1 $aCARVALHO, E. J. M. 700 1 $aSILVA, A. R. 700 1 $aSCHWARTZ, G. 773 $tEcological Engineering$gv. 160, Article 106143, Feb. 2021.
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