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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Eucalyptus and Acacia tree growth over entire rotation in single- and mixed-species plantations across five sites in Brazil and Congo

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Autor(es):
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Bouillet, Jean-Pierre [1, 2] ; Laclau, Jean-Paul [3, 1] ; de Moraes Goncalves, Jose Leonardo [2] ; Voigtlaender, Maureen [2] ; Gava, Jose Luis [4] ; Leite, Fernando Palha [5] ; Hakamada, Rodrigo [6] ; Mareschal, Louis [1, 7] ; Mabiala, Andre [7] ; Tardy, Florence [8] ; Levillain, Joseph [7, 9] ; Deleporte, Philippe [1] ; Epron, Daniel [10, 1, 7] ; Nouvellon, Yann [1, 11]
Número total de Autores: 14
Afiliação do(s) autor(es):
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[1] CIRAD, UMR Eco&Sols, Ecol Fonct & Biogeochim Sols & Agroecosyst SupAgr, F-34060 Montpellier - France
[2] Univ Sao Paulo, ESALQ, BR-13418900 Piracicaba, SP - Brazil
[3] Univ Sao Paulo, Dept Ecol, BR-05508900 Sao Paulo - Brazil
[4] Suzano Papel & Celulose, BR-18207780 Itapetininga, SP - Brazil
[5] CENIBRA, BR-35160970 Ipatinga, MG - Brazil
[6] Int Paper Brasil, Mogi Guacu, SP - Brazil
[7] CRDPI, Pointe Noire - Congo
[8] AgroParisTech, F-75231 Paris 05 - France
[9] CIRAD, Capesterre Belle Eau 97130 - Guadeloupe
[10] Univ Lorraine, UMR 1137, Fac Sci, F-54500 Vandoeuvre Les Nancy - France
[11] Univ Sao Paulo, Dept Ciencias Atmosfer, BR-05508090 Sao Paulo - Brazil
Número total de Afiliações: 11
Tipo de documento: Artigo Científico
Fonte: FOREST ECOLOGY AND MANAGEMENT; v. 301, n. SI, p. 89-101, AUG 1 2013.
Citações Web of Science: 46
Resumo

The association of N-2-fixing species (NFS) could be an attractive option for achieving a sustainable increase of Eucalyptus plantations (EP) productivity through a positive balance between facilitative effects and competition between species. A randomised block design was replicated at four sites (Cenibra, USP, Suzano and IP) in Southern Brazil and at one site in Congo. The development of mono-specific stands of Acacia mangium (100A) and Eucalyptus grandis or urophylla x grandis (100E), was compared with N fertilisation treatment (100E + N) and with mixed-species plantations in a 1:1 ratio (50A:50E), and in an additive series with varying densities of acacia for the same density of eucalypt (25A:100E, 50A:100E, 100A:100E). The objectives were to assess the effect of mixtures on tree growth and stand production, and the behaviour of the two species in contrasting soil and climatic conditions. Tree growth was monitored over stand rotation and the biomass of aboveground tree components estimated at mid-rotation and at harvesting age. Eucalyptus height was 13% higher in Brazil than in Congo. Favourable ecological conditions in Congo and Cenibra led to 50% higher Acacia tree height than at the other sites. A depressive effect of Eucalyptus neighbour trees on Acacia height and circumference growth, lower in Congo than in Brazil, was observed in the mixtures from age 1-2 years onwards. Depressive effects of acacia on eucalypt height and circumference growth were low in USP, Suzano and IP, high in Cenibra, and not observed in Congo, in 50A:50E and 25A:100E. A positive though insignificant response to N fertilisation was only found in USP and Congo. Complementarity for light and soil resource capture between Eucalyptus and Acacia trees resulted in mean annual increments in total stand stemwood biomass (MAI) that were 7-15%, 6-12%, and 40% higher in the additive series than for 100E in Cenibra, LISP and Congo, respectively at mid-rotation. Whilst lasting complementarity and facilitation in Congo led to 17-34% higher MAI in mixtures than for 100E at harvesting age, MAIs were not significantly higher in mixtures than for 100E in Brazil. Mixed-species plantations of Eucalyptus and A. mangium might enhance aboveground stand production on poor nutrient soils in warm and humid tropical climates with low water limitations. (c) 2012 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 10/16623-9 - Intensificação ecológica de plantações de eucaliptos pela associação com espécies leguminosas arbóreas fixadoras de nitrogênio
Beneficiário:José Leonardo de Moraes Gonçalves
Linha de fomento: Auxílio à Pesquisa - Temático