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Modelling the dynamics of equatorial forest soil deep carbon in changing environments - C-PROFOR

Processo: 12/51469-6
Linha de fomento:Auxílio à Pesquisa - Temático
Vigência: 01 de fevereiro de 2013 - 30 de setembro de 2016
Área do conhecimento:Ciências Exatas e da Terra - Geociências
Convênio/Acordo: ANR - Blanc
Pesquisador responsável:Adolpho José Melfi
Beneficiário:Adolpho José Melfi
Pesq. responsável no exterior: Yves Lucas
Instituição no exterior: Université de Toulon (UTLN), França
Instituição-sede: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brasil
Pesquisadores principais:
Célia Regina Montes
Bolsa(s) vinculada(s):14/09936-1 - Determinação do carbono total de horizontes BH profundos de perfis de espodossolos da amazônica, BP.TT
Assunto(s):Florestas  Solos  Meio ambiente 

Resumo

The Amazonian podzols may store larger amounts of carbon (C) particularly in their deep Bh horizons. Similar high C storage is likely to exist in similar climate/soil areas, mainly in Africa. Such C stocks raise the problem of their stability in response to changes in land use or climate. Any significant changes in vegetation cover would significantly alter the soil water dynamics, Which is likely to affect the organic matter (OM) turnover in soils. The direction of the change is not clear and is likely to depend on the specific conditions and properties of the soils. Considering the Bh of the equatorial podzols, it can be assumed that the drying of these generally saturated soils will lead to an increase in C mineralization, although the extent of this increase has not yet been determined. In 1hls context, the project objective is to quantify the rates of podzol OM mineralization under different scenarios of climate change towards drier or more variable moisture conditions. This requires (1) the quantification of podzol OM mineralization under alternating wet/dry cycles and (2) the modelling of water dynamics in podzols systems submitted to land use or climate changes. (1) will be addressed by quantifying the ability of soil microorganisms to metabolize the soil OM by monitoring mineralization at different matric potentials and under alternating wet/dry cycles, and {2) by modelling water dynamics under different land use/climate scenarios, using the knowledge of podzol system already obtained or being acquired by ongoing studies. Additional data and validation of the long-term modelling will be sought by studying natural chronosequences… (AU)

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Publicações científicas (6)
(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)
TADINI, AMANDA MARIA; MOUNIER, STEPHANE; BASTOS PEREIRA MILORI, DEBORA MARCONDES. Modeling the quenching of fluorescence from organic matter in Amazonian soils. Science of The Total Environment, v. 698, JAN 1 2020. Citações Web of Science: 0.
LUCAS, YVES; SANTIN, ROBERTA CLEMENTE; DA SILVA, WILSON T. L.; MERDY, PATRICIA; MELFI, ADOLPHO JOSE; RIBEIRO PEREIRA, OSVALDO JOSE; MONTES, CELIA REGINA. Soil sample conservation from field to lab for heterotrophic respiration assessment. METHODSX, v. 7, 2020. Citações Web of Science: 0.
TADINI, AMANDA M.; NICOLODELLI, GUSTAVO; MARANGONI, BRUNO S.; MOUNIER, STEPHANE; MONTES, CELIA R.; MILORI, DEBORA M. B. P. Evaluation of the roles of metals and humic fractions in the podzolization of soils from the Amazon region using two analytical spectroscopy techniques. Microchemical Journal, v. 144, p. 454-460, JAN 2019. Citações Web of Science: 3.
ISHIDA, DEBORA AYUMI; VIEIRA-COELHO, ANTONIO CARLOS; MELFI, ADOLPHO JOSE; LUCAS, YVES; BRASILIANO CAMARGO, JOAO PAULO; MONTES, CELIA REGINA. Influence of pedogenetic processes on the validity of kaolinite crystallinity indices: A case study of an Amazonian Ferralsol-Podzol soil system with white kaolin. APPLIED CLAY SCIENCE, v. 162, p. 435-442, SEP 15 2018. Citações Web of Science: 0.
TADINI, AMANDA M.; NICOLODELLI, GUSTAVO; SENESI, GIORGIO S.; ISHIDA, DEBORA A.; MONTES, CELIA R.; LUCAS, YVES; MOUNIER, STEPHANE; GUIMARAES, FRANCISCO E. G.; MILORI, DEBORA M. B. P. Soil organic matter in podzol horizons of the Amazon region: Humification, recalcitrance, and dating. Science of The Total Environment, v. 613, p. 160-167, FEB 1 2018. Citações Web of Science: 7.
DOUPOUX, CEDRIC; MERDY, PATRICIA; MONTES, CELIA REGINA; NUNAN, NAOISE; MELFI, ADOLPHO JOSE; RIBEIRO PEREIRA, OSVALDO JOSE; LUCAS, YVES. Modelling the genesis of equatorial podzols: age and implications for carbon fluxes. BIOGEOSCIENCES, v. 14, n. 9, p. 2429-2440, MAY 12 2017. Citações Web of Science: 3.

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