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

• Grant number: 12/51469-6
• Support Opportunities: Research Projects - Thematic Grants
• Start date: February 01, 2013
• End date: September 30, 2016
• Field of knowledge: Physical Sciences and Mathematics - Geosciences
• Agreement: ANR - Blanc
• Principal Investigator: Adolpho José Melfi
• Grantee: Adolpho José Melfi
• Principal researcher abroad: Yves Lucas
• Institution abroad: Université de Toulon (UTLN), France
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Pesquisadores principais: Célia Regina Montes

Abstract

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)

Scientific publications

(10)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

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. (11/03250-2, 12/51469-6)

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. (11/03250-2, 12/51469-6)

TADINI, AMANDA M.; NICOLODELLI, GUSTAVO; HAJJOUL, HOUSSAM; MILORI, DEBORAM. B. P.; MOUNIER, STEPHANE. Humic fractions from Amazon soils: Lifetime study and humification process by fluorescence spectroscopy. APPLIED GEOCHEMISTRY, v. 147, p. 8-pg., 2022-11-01. (13/13013-3, 13/07276-1, 12/51469-6, 11/03250-2)

GORANOV, ALEKSANDAR I.; TADINI, AMANDA M.; MARTIN-NETO, LADISLAU; BERNARDI, ALBERTO C. C.; OLIVEIRA, PATRICIA P. A.; PEZZOPANE, JOSE R. M.; MILORI, DEBORA M. B. P.; MOUNIER, STEPHANE; HATCHER, PATRICK G.. Comparison of Sample Preparation Techniques for the (-)ESI-FT- ICR-MS Analysis of Humic and Fulvic Acids. Environmental Science & Technology, v. 56, n. 17, p. 14-pg., 2022-09-06. (11/03250-2, 13/13013-3, 17/20084-5, 19/02939-9, 12/51469-6, 17/22950-1, 13/07276-1)

MONTES, CELIA R.; MERDY, PATRICIA; DA SILVA, WILSON T. L.; ISHIDA, DEBORA; MELFI, ADOPHO J.; SANTIN, ROBERTA C.; LUCAS, YVES. Mineralization of soil organic matter from equatorial giant podzols submitted to drier pedoclimate: A drainage topochronosequence study. CATENA, v. 222, p. 10-pg., 2022-12-08. (12/51469-6, 11/03250-2, 12/18092-6)

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. (13/07276-1, 11/03250-2, 12/51469-6, 13/13013-3)

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. (12/51469-6, 13/07276-1, 13/13013-3, 11/03250-2)

MERDY, PATRICIA; LUCAS, YVES; COULOMB, BRUNO; MELFI, ADOLPHO J.; MONTES, CELIA R.. Soil organic carbon mobility in equatorial podzols: soil column experiments. SOIL, v. 7, n. 2, p. 585-594, SEP 6 2021. (11/03250-2, 12/51469-6)

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. (13/13013-3, 11/03250-2, 13/07276-1, 12/51469-6)

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. (12/51469-6, 11/03250-2)