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Factors controlling Eucalyptus productivity: How water availability and stand structure alter production and carbon allocationAuthor(s): Michael G. Ryan; Jose Luiz Stape; Dan Binkley; Sebastiao Fonseca; Rodolfo A. Loos; Ernesto N. Takahashi; Claudio R. Silva; Sergio R. Silva; Rodrigo E. Hakamada; Jose Mario Ferreira; Augusto M. N. Lima; Jose Luiz Gava; Fernando P. Leite; Helder B. Andrade; Jacyr M. Alves; Gualter G. C. Silva
Source: Forest Ecology and Management. 259: 1695-1703.
Publication Series: Miscellaneous Publication
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DescriptionWood production varies substantially with resource availability, and the variation in wood production can result from several mechanisms: increased photosynthesis, and changes in partitioning of photosynthesis to wood production, belowground flux, foliage production or respiration. An understanding of the mechanistic basis for patterns in wood production within a stand and across landscapes requires a complete annual carbon budget. We measured annual carbon flows to wood production, foliage production and total belowground carbon flux (the sum of root production, root respiration, and mycorrhizal production and respiration) from ages three to five years in clonal Eucalyptus plantations at four sites in Brazil to test if fertility, water availability and stand structure changed wood production and by what mechanism. We also quantified the patterns in light interception and the efficiency of light use to provide additional mechanistic insights into growth responses and to determine if light-use efficiency was related to changes in flux and partitioning.
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CitationRyan, Michael G.; Stape, Jose Luiz; Binkley, Dan; Fonseca, Sebastiao; Loos, Rodolfo A.; Takahashi, Ernesto N.; Silva, Claudio R.; Silva, Sergio R.; Hakamada, Rodrigo E.; Ferreira, Jose Mario; Lima, Augusto M. N.; Gava, Jose Luiz; Leite, Fernando P.; Andrade, Helder B.; Alves, Jacyr M.; Silva, Gualter G. C. 2010. Factors controlling Eucalyptus productivity: How water availability and stand structure alter production and carbon allocation. Forest Ecology and Management. 259: 1695-1703.
KeywordsEucalyptus production, carbon budget, carbon allocation, light-use efficiency, aboveground productivity, carbon sequestration, belowground, allocation, soil respiration, irrigation, carbon partitioning
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