Soil quality and stabilization of organic matter of technosols developed from limestone mine spoils

• Grant number: 19/18324-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: August 01, 2020
• End date: December 01, 2023
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Tiago Osório Ferreira
• Grantee: Francisco Ruiz
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated scholarship(s): 21/10382-4 - Mineral-organic associations during early pedogenesis: a case-study in Technosol, BE.EP.DR

Abstract

Given the ability of humans to modify the planet surface, anthropogenic soils will become increasingly frequent. Among them, technosols stand out for the strong influence of human activity on their genesis, containing in their control section more than 20% by volume of materials created, modified or transported by anthropic activity, called artifacts. Mining activity is responsible for causing large impact on the landscape and degradation of natural resources, including the soil. Recent studies show that the use of technosols as a tool to recover areas impacted by mining has been effective. In this sense, one of the objectives of this work is to evaluate the efficiency of technosols built with limestone mining spoils(non vegetated (t = 0), grown with sugarcane (t = 4 and t = 8 years) and with pasture ( t = 22 years)] to restore soil quality, comparing them to natural soils with equal land use. Functions such as soil water infiltration and holding capacity, carbon stocks, nutrient reserve and biological activity will be evaluated. In order to asses the results, soil attributes will be expressed as quality indexes. Additionally, the mechanism of organic matter stabilization will be investigated. For this purpose, the density fractionation of organic matter will be conducted to separate the organo-mineral phase, followed by the separation of sand, silt and clay. The samples will undergo a sequential extraction with different chemicals, each one disrupting a specific kind of bond between the organic matter and the active mineral surfaces. After that, the carbon content of each fraction will be measured. Lastly, the soil mineral phases (sand, silt and clay) will be identified by x-ray diffraction. (AU)

Scientific publications

(5)

(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)

QUEIROZ, HERMANO MELO; RUIZ, FRANCISCO; DENG, YOUJUN; DE SOUZA JUNIOR, VALDOMIRO S.; FERREIRA, AMANDA DUIM; LUIS OTERO, XOSE; CAMELO, DANILO DE LIMA; BERNARDINO, ANGELO FRAGA; FERREIRA, TIAGO OSORIO. Mine tailings in a redox-active environment: Iron geochemistry and potential environmental consequences. Science of The Total Environment, v. 807, n. 3, FEB 10 2022. (19/17413-2, 19/14800-5, 19/19987-6, 18/04259-2, 18/08408-2, 19/18324-3)

RUIZ, FRANCISCO; SAFANELLI, JOSE LUCAS; PERLATTI, FABIO; CHERUBIN, MAURICIO ROBERTO; DEMATTE, JOSE A. M.; CERRI, CARLOS EDUARDO PELLEGRINO; OTERO, XOSE LUIS; RUMPEL, CORNELIA; FERREIRA, TIAGO OSORIO. Constructing soils for climate-smart mining. COMMUNICATIONS EARTH & ENVIRONMENT, v. 4, n. 1, p. 6-pg., 2023-06-19. (19/18324-3)

RUIZ, FRANCISCO; RUMPEL, CORNELIA; SILVA, BEATRIZ MARCHESE; DE CAMARGO, PLINIO BARBOSA; FERREIRA, TIAGO OSORIO. Soil organic matter stabilization during early stages of Technosol development from Ca, Mg and pyrite-rich parent material. CATENA, v. 232, p. 10-pg., 2023-11-01. (19/18324-3)

QUEIROZ, HERMANO MELO; FERREIRA, AMANDA DUIM; RUIZ, FRANCISCO; BOVI, RENATA CRISTINA; DENG, YOUJUN; DE SOUZA JR, VALDOMIRO S.; OTERO, XOSE LUIS; BERNARDINO, ANGELO FRAGA; COOPER, MIGUEL; FERREIRA, TIAGO OSORIO. Early pedogenesis of anthropogenic soils produced by the world's largest mining disaster, the "Funda tilde o" dam collapse, in southeast Brazil. CATENA, v. 219, p. 14-pg., 2022-12-01. (21/00221-3, 19/18324-3, 19/14800-5, 20/11502-0, 18/04259-2, 19/19987-6)

RUIZ, FRANCISCO; PUGLIESE ANDRADE, GABRIEL RAMATIS; SARTOR, LUCAS RESMINI; BARROS DOS SANTOS, JEAN CHEYSON; DE SOUZA JUNIOR, VALDOMIRO SEVERINO; FERREIRA, TIAGO OSORIO. The rhizosphere of tropical grasses as driver of soil weathering in embryonic Technosols (SE-Brazil). CATENA, v. 208, JAN 2022. (19/18324-3)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

RUIZ, Francisco. Carbon sequestration and mechanisms of soil organic matter stabilization in Technosols constructed for mine reclamation. 2023. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.