Data/hora: 25/06/2024 12:30:04

Biblioteca(s): | Embrapa Solos.
Data corrente: | 16/09/2021
Data da última atualização: | 16/09/2021
Autoria: | BIGHI, K. N.; PAULA, R. R.; CALDEIRA, M. V. W.; BURAK, D. L.; MENDONÇA, E. de S.; SOUZA, P. H. de; DELARMELINA, W. M.; BALIEIRO, F. de C.
Afiliação: | KELLY NERY BIGHI, UFES; RANIERI RIBEIRO PAULA, UFES; MARCOS VINÍCIUS WINCKLER CALDEIRA, UFES; DIEGO LANG BURAK, UFES; EDUARDO DE SÁ MENDONÇA, UFES; PAULO HENRIQUE DE SOUZA, IFMG; WILLIAM MACEDO DELARMELINA, IFES; FABIANO DE CARVALHO BALIEIRO, CNPS.
Título: | Nitrogen pools in tropical plantations of N2-fixing and non-N2-fixing legume trees under different tree stand densities.
Ano de publicação: | 2021
Fonte/Imprenta: | Nitrogen, v. 2, n. 1, p. 86-98, 2021.
DOI: | https://doi.org/10.3390/nitrogen2010006
Idioma: | Inglês
Conteúdo: | We investigated the nitrogen pools in monocultures of legume species widely used in reforestation in Brazil that have contrasting growth and nitrogen acquisition strategies. The plantations were established with the slow-growing and N2-fixing tree Anadenanthera peregrina var. peregrina, and the fast-growing and non-fixing tree Schizolobium parahyba var. amazonicum. The measurements of N pools in the tree biomass and the soil followed standard methods and were carried out on 54 experimental plots. The N2 fixation pools were evaluated by abundance natural of 15N and the N accretion methods. The soil N content was of similar magnitude between species and stand densities. The species showed similar amounts of N in the biomass, but divergent patterns of N accumulation, as well as the 15N signature on the leaves. S. parahyba accumulated most N in the stem, while A. peregrina accumulated N in the roots and leaves. However, the N accumulation in biomass of A. peregrina stand was less constrained by environment than in S. parahyba stands. The percentage of N derived from N2 fixation in A. peregrina stands decreased with the increase of stand density. The biological N2 fixation estimates depended on the method and the response of tree species to environment.
Palavras-Chave: | 15N natural abundance; Functional traits; N2 biological fixation.
Thesagro: | Fixação de Nitrogênio; Floresta; Reflorestamento.
Thesaurus Nal: | Forest plantations; Forest restoration; Nitrogen balance; Nitrogen fixation.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/226110/1/Nitrogen-pools-in-tropical-plantations-2021.pdf
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (20739-1) - UPC - AP - DD -  -  -  - DIS