Partitioning of net primary production in Eucalyptus and Acacia stands and in mixed-species plantations: two case-studies in contrasting tropical environments

Autor: José Leonardo de Moraes Gonçalves, Louis Mareschal, Jean-Paul Laclau, Blandine Geneste, Daniel Epron, Gael Sola, Jean-Pierre Bouillet, Juan Sinforiano Delgado-Rojas, Yann Nouvellon, Lydie-Stella Koutika, Rildo Moreira e Moreira
Přispěvatelé: Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (EEF), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA), Instituto de Astronomia, Geofísica e Ciências Atmosféricas [São Paulo] (IAG), Universidade de São Paulo (USP), ESALQ, BR, University of São Paulo (USP), Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University (UNESP), Intensfix Project [ANR-2010-STRA-004-03], FAPESP Thematic Project [2010/16623-9], ATP Neucapalm (CIRAD), USP/COFECUB Project [22193PA], ANR-10-STRA-0004,Intens&Fix,Intensification écologique des écosystèmes de plantations forestières. Modélisation biophysique et évaluation socio-économique de l'association d'espèces fixatrices d'azote(2010), Institut National de la Recherche Agronomique (INRA)-Institut de Recherche pour le Développement (IRD)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Instituto de Astronomia, Geofisica e Ciencias Atmosfericas [Sao Paulo] (IAG), Universidade Estadual Paulista Júlio de Mesquita Filho [São José do Rio Preto] (UNESP)
Rok vydání: 2012
Předmět:
0106 biological sciences
F08 - Systèmes et modes de culture
[SDV]Life Sciences [q-bio]
F62 - Physiologie végétale - Croissance et développement
forêt tropicale
01 natural sciences
ALLOCATION
ROOT RESPIRATION
Acacia mangium
Biomasse
Monoculture
SOIL CARBON BALANCE
Zone climatique
2. Zero hunger
Biomass (ecology)
Eucalyptus
TREE GROWTH
CONGO
MANGIUM
Wood production
biology
Agroforestry
Acacia
Forestry
04 agricultural and veterinary sciences
Plant litter
Plantation forestière
Rendement des cultures
CARBONO
N-2 FIXATION
P33 - Chimie et physique du sol
Eucalyptus grandis
Fixation de l'azote
F40 - Écologie végétale
Nitrogen fixing species
Management
Monitoring
Policy and Law
Net primary production
Matière organique du sol
Culture en mélange
Mixed-species plantation
Nature and Landscape Conservation
GLOBULUS
Primary production
15. Life on land
biology.organism_classification
K10 - Production forestière
NITROGEN
Agronomy
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
MEARNSII
Cycle du carbone
010606 plant biology & botany
Zdroj: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Forest Ecology and Management
Forest Ecology and Management, Elsevier, 2013, 301, pp.102-111. ⟨10.1016/j.foreco.2012.10.034⟩
ISSN: 0378-1127
Popis: The introduction of nitrogen fixing species (NFS) in fast-growing tree plantations is an alternative option to reduce fertilizer inputs. However, the success of mixed-species plantations depends on the balance between positive interactions among species (resulting from facilitation and/or complementarity) and the negative effects of interspecific competition. Using a carbon budget approach and coupling measurements of standing biomass, aboveground litterfall and soil CO2 efflux, we assessed the influence of replacing half of eucalypt trees by Acacia mangium on total belowground carbon flux (TBCF), net primary production (NPP) and its partitioning between above- and belowground growth at two tropical sites in Brazil (Itatinga) and in Congo (Kissoko) exhibiting contrasting climates, edaphic conditions and wood productions. Annual soil CO2 efflux (F-S) was significantly lower in the acacia monocultures than in eucalypt monocultures and mixed-species stands at both sites. Annual F-S was significantly lower at Itatinga compared to Kissoko for all stands while TBCF was significantly lower in the eucalypt stands only. In the eucalypt monocultures we found a significantly lower aboveground NPP (ANPP) and wood production (wood NPP) at Kissoko compared to Itatinga that was almost fully balanced by a significantly higher belowground NPP (BNPP), leading to similar NPP. Similarly, acacia monocultures exhibited significantly higher ANPP and wood NPP at Itatinga than at Kissoko. The mixed-species stands exhibited a significantly lower wood NPP and ANPP than the eucalypt monocultures at the Brazilian site while NPP of the mixture was not significantly different than the average NPP of the two monocultures. At the Congolese site, NPP of the mixture was significantly higher than the average NPP of the two monocultures. NPP was similar in the mixed-species stand and the eucalypt monoculture with a significantly lower partitioning of NPP to belowground production, leading to a one third higher wood biomass at harvest in the mixed-species stand. A positive effect of growing eucalypts with the nitrogen fixing acacia trees on stand wood production occurred at Kissoko but not at Itatinga. Mixed-species plantations with NFS can be advocated at sites where the productive gains resulting from nitrogen fixation are not compromised by other resource limitations. (c) 2012 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
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