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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
21/03/2001 |
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Data da última atualização: |
17/08/2023 |
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Autoria: |
WICK, B.; TIESSEN, H.; MENEZES, R. S. C. |
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Título: |
Land quality changes following the conversion of the natural vegetation into silvo-pastoral systems in semi-arid NE Brazil. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Plant and Soil, v.222, n.1-2, p.59-70, 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The presence of trees in grasslands frequently results in resource islands of higher soil quality. Therefore, some native trees are often preserved or agroforestry species are interplanted when land is cleared for pasture. We evaluated soil quality changes associated with the conversion of a native thorn forest (caatinga) into silvo-pastoral systems in semiarid NE Brazil. Soil nutrients, organic matter, microbial biomass and soil enzymes under native caatinga, the canopy of two preserved native (Ziziphus joazeiro and Spondias tuberosa) and one introduced tree species (Prosopis juliflora), and under a planted pasture of Cenchrus ciliaris were compared. The two preserved tree species maintained high nutrient and organic matter contents and high biological activity levels not only relative to the grass but also relative to the native caatinga. The non-deciduous Z. joazeiro was more effective than the deciduous S. tuberosa, and enriched surface soils by 100 mg P kg-1. The complete replacement of natural caatinga with C. ciliaris pasture or a C. ciliaris?P. juliflora silvopastoral system had, after 14 years, decreased microbial biomass C and N contents, and ß-glucosidase activity, but did not affect soil nutrient or organic matter status. The biological activity under the trees of the tree-grass association was greater than under grass alone, although P. juliflora did not maintain higher nutrient or organic matter levels. The search for indigenous alternatives to the main agroforestry species may provide viable alternatives for improved land management and the conservation of biodiversity. Microbiological and biochemical parameters responded more readily to changes in land management than chemical fertility indices. They are important indices for the impact of vegetation changes and its associated land quality changes. MenosAbstract: The presence of trees in grasslands frequently results in resource islands of higher soil quality. Therefore, some native trees are often preserved or agroforestry species are interplanted when land is cleared for pasture. We evaluated soil quality changes associated with the conversion of a native thorn forest (caatinga) into silvo-pastoral systems in semiarid NE Brazil. Soil nutrients, organic matter, microbial biomass and soil enzymes under native caatinga, the canopy of two preserved native (Ziziphus joazeiro and Spondias tuberosa) and one introduced tree species (Prosopis juliflora), and under a planted pasture of Cenchrus ciliaris were compared. The two preserved tree species maintained high nutrient and organic matter contents and high biological activity levels not only relative to the grass but also relative to the native caatinga. The non-deciduous Z. joazeiro was more effective than the deciduous S. tuberosa, and enriched surface soils by 100 mg P kg-1. The complete replacement of natural caatinga with C. ciliaris pasture or a C. ciliaris?P. juliflora silvopastoral system had, after 14 years, decreased microbial biomass C and N contents, and ß-glucosidase activity, but did not affect soil nutrient or organic matter status. The biological activity under the trees of the tree-grass association was greater than under grass alone, although P. juliflora did not maintain higher nutrient or organic matter levels. The search for indigenous alternatives to the ma... Mostrar Tudo |
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Palavras-Chave: |
Arvores nativas; Biomassa microbiana; Dinamica de nutrientes; Indigenous trees; Land quality change; Silvo-pastoral systems; Sistema silvipastoril. |
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Thesagro: |
Algaroba; Caatinga; Capim Buffel; Cenchrus ciliaris; Juá; Prosopis Juliflora; Spondias Tuberosa; Umbu; Ziziphus Joazeiro. |
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Thesaurus Nal: |
Brazil; Indigenous species; Microbial biomass; Semiarid soils; Shade agroforestry systems; Silvopastoral systems; Soil enzymes; Soil nutrient dynamics. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03110naa a2200433 a 4500
001 1524215
005 2023-08-17
008 2000 bl uuuu u00u1 u #d
100 1 $aWICK, B.
245 $aLand quality changes following the conversion of the natural vegetation into silvo-pastoral systems in semi-arid NE Brazil.$h[electronic resource]
260 $c2000
520 $aAbstract: The presence of trees in grasslands frequently results in resource islands of higher soil quality. Therefore, some native trees are often preserved or agroforestry species are interplanted when land is cleared for pasture. We evaluated soil quality changes associated with the conversion of a native thorn forest (caatinga) into silvo-pastoral systems in semiarid NE Brazil. Soil nutrients, organic matter, microbial biomass and soil enzymes under native caatinga, the canopy of two preserved native (Ziziphus joazeiro and Spondias tuberosa) and one introduced tree species (Prosopis juliflora), and under a planted pasture of Cenchrus ciliaris were compared. The two preserved tree species maintained high nutrient and organic matter contents and high biological activity levels not only relative to the grass but also relative to the native caatinga. The non-deciduous Z. joazeiro was more effective than the deciduous S. tuberosa, and enriched surface soils by 100 mg P kg-1. The complete replacement of natural caatinga with C. ciliaris pasture or a C. ciliaris?P. juliflora silvopastoral system had, after 14 years, decreased microbial biomass C and N contents, and ß-glucosidase activity, but did not affect soil nutrient or organic matter status. The biological activity under the trees of the tree-grass association was greater than under grass alone, although P. juliflora did not maintain higher nutrient or organic matter levels. The search for indigenous alternatives to the main agroforestry species may provide viable alternatives for improved land management and the conservation of biodiversity. Microbiological and biochemical parameters responded more readily to changes in land management than chemical fertility indices. They are important indices for the impact of vegetation changes and its associated land quality changes.
650 $aBrazil
650 $aIndigenous species
650 $aMicrobial biomass
650 $aSemiarid soils
650 $aShade agroforestry systems
650 $aSilvopastoral systems
650 $aSoil enzymes
650 $aSoil nutrient dynamics
650 $aAlgaroba
650 $aCaatinga
650 $aCapim Buffel
650 $aCenchrus ciliaris
650 $aJuá
650 $aProsopis Juliflora
650 $aSpondias Tuberosa
650 $aUmbu
650 $aZiziphus Joazeiro
653 $aArvores nativas
653 $aBiomassa microbiana
653 $aDinamica de nutrientes
653 $aIndigenous trees
653 $aLand quality change
653 $aSilvo-pastoral systems
653 $aSistema silvipastoril
700 1 $aTIESSEN, H.
700 1 $aMENEZES, R. S. C.
773 $tPlant and Soil$gv.222, n.1-2, p.59-70, 2000.
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| 1. |  | ALMEIDA-AZEVEDO, R.; ACIOLI, A. N. S.; HELEODORO, R.; MORAIS, J. W. de; BROWN, G. G.; KILLE, P.; CUNHA, L.; AZEVEDO, R. A. de. Tucupitermes, the largest Apicotermitinae (Isoptera, Termitidae) from the Amazon Rainforest. Zootaxa, v. 5633, n. 1, p. 186-194, 2025.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
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