Land use and altitude: how do they influence the phosphorus fractions?
Título del documento: Land use and altitude: how do they influence the phosphorus fractions?
Revue: Acta scientiarum. Agronomy
Base de datos: PERIÓDICA
Número de sistema: 000459850
ISSN: 1679-9275
Autores: 1
2
2
2
Instituciones: 1Universidade Federal de Vicosa, Departamento de Solos, Vicosa, Minas Gerais. Brasil
2Universidade Federal do Espirito Santo, Centro de Ciencias Agrarias, Alegre, Espirito Santo. Brasil
Año:
Volumen: 44
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés Soil use and management systems modify phosphorus (P) dynamics by changing the different P compartments. However, the interaction between land-use change and altitude is not clear. This study aimed to evaluate the effect of land use on P forms in different soil aggregate classes of Ultisols located at two altitudes. Soil samples were collected in four land-use systems (agroforestry system, secondary forest, pasture, and eucalyptus) located at two altitudes in the Atlantic Forest biome, Brazil. Phosphorus fractions were assessed using sequential fractionation. In general, recalcitrant forms represented about 70% in the agroforestry system, 66% in the eucalyptus, 65% in the pasture, and 57% in the secondary forest relative to the total P content of all land uses at both altitudes. The soil aggregate classes of smaller diameter presented higher P contents in all fractions. The smallest soil aggregate classes showed up to 65% more P than the classes with smaller diameters in the different land-use systems and altitudes
Disciplinas: Agrociencias
Palabras clave: Suelos,
Edafología,
Uso del suelo,
Sistemas agroforestales,
Eucalyptus,
Altitud,
Fósforo,
Pastos,
Agregados del suelo,
Brasil
Keyword: Soils,
Edaphology,
Land use,
Agroforestry systems,
Brazil,
Soil aggregates,
Altitude,
Eucalyptus,
Phosphorus,
Grasses
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