Data/hora: 09/06/2024 18:41:36

Biblioteca(s): | Embrapa Meio Norte / UEP-Parnaíba.
Data corrente: | 05/01/1996
Data da última atualização: | 05/01/1996
Autoria: | MONTAGNINI, F.; BUSCHBACHER, R.
Título: | Nitrification rates in two undisturbed tropical rain forests and threeslash-and-burn sites of the Venezuela Amazon.
Ano de publicação: | 1989
Fonte/Imprenta: | Biotropica, v.21, n.1, p.9-14, 1989.
Idioma: | Inglês
Conteúdo: | Nitrification was measured during the rainy season in two undisturbed tropical rain forests and three slash-and-burn sites in the Amazon region of sothwestern Venezuela. Nitrification was higher in the soils of the slash-and-burn sites than in the undisturbed forests. Rates of nitrate production were 14,9 mg/kg/30 days in a forest on an oxisol. 3,5mg/kg/30 days in a forest on Ultisol, 23,2mg/kg/30 days in a 1,5-yr-old slash-and-burn agricultural site on an oxisol, 12,9 mg/kg/30 days in a 0,5-yr-old slash and-burn agricultural site on ultisol, and 12,1 mg/kg/30 days in a 3,0-yr-old pasture on ultisol. In the undisturbed forests, rates of nitrate production in the root mat averaged 93.5mg/kg/3o days on oxisols and 11,2mg/kg/30 days on ultisols. Nitrificationrates closely followed total nitrogen mineralization rates...
Palavras-Chave: | Oxissolos; Tropical rain forest; Ultisol; Ultissolos.
Thesagro: | Corte; Floresta Tropical Úmida; Mineralização; Nitrificação; Oxisol; Queimada.
Thesaurus Nal: | burning; mineralization; nitrification; slash.
Categoria do assunto: | --
Registro original: | Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP)
Exemplares: | CPAMN-UEPP - (4650-1) - ADC - SP - -- -  -  - 1996.00011 - DIS