Soil physical and hydrological parameters as indicator for the sustainability of land use systems in degraded areas on terra firme in the Amazon basin.
Study on the soil physical and hydrological characteristics under monoculture (cupuacu, pupunha) and an agroforestry systems (cupuacu + pupunha + urucu (annato) + castanha-do-Para (Brazil nut) with a cover crop of pueraria, in Manaus-AM (Brasil). The investigated soil showed an unusual behavior: the hydraulic conductivty was high close to and at saturation as it is commonly found in sady soils; however, at high soil water suction, it can retain large amounts of water which is a typical characteristics for clayey soils. This phenomenon may explained to the particle size distribuition (predominatly clay) and its strong aggregation. The sustainability of this soil is related with the stability of its aggregation, therefore the flocculation index may be a good parameter to evaluate its physical stability.
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Parte de livro biblioteca |
| Language: | English eng |
| Published: |
2000-11-23
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| Subjects: | Agrofloresta, Brasil, Amazonas, Manaus, Reclamation, Soil chemicophysical properties, Sustainability., Árvore Frutífera, Balanço Hídrico, Conservação do Solo, Desenvolvimento Sustentável, Cultivo Multiplo, Floresta Tropical Úmida, Física do Solo, Recuperação do Solo, Relação Solo-Água, Uso da Terra., agroforestry, fruit trees, land use, multiple cropping, tropical rain forests., soil conservation, soil water balance, |
| Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/669981 |
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| Summary: | Study on the soil physical and hydrological characteristics under monoculture (cupuacu, pupunha) and an agroforestry systems (cupuacu + pupunha + urucu (annato) + castanha-do-Para (Brazil nut) with a cover crop of pueraria, in Manaus-AM (Brasil). The investigated soil showed an unusual behavior: the hydraulic conductivty was high close to and at saturation as it is commonly found in sady soils; however, at high soil water suction, it can retain large amounts of water which is a typical characteristics for clayey soils. This phenomenon may explained to the particle size distribuition (predominatly clay) and its strong aggregation. The sustainability of this soil is related with the stability of its aggregation, therefore the flocculation index may be a good parameter to evaluate its physical stability. |
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