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International Journal of Mining, Reclamation and Environment Volume 35, 2021 - Issue 3
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Research Article

Chemical and microstructural behaviour of ferruginous rocky outcrops topsoils applied to degraded mining areas

Fernanda C. G. Rochaa Universidade Federal de Ouro Preto, Department of Geology, Campus Morro do Cruzeiro, Ouro Preto, MG, BrazilView further author information
,
Fábio S. de Oliveirab Department of Geography, Universidade Federal de Minas Gerais, Geosciences Institute, Belo Horizonte, MG, BrazilORCID Iconhttps://orcid.org/0000-0002-1450-7609View further author information
ORCID Icon,
Mariangela G. P. Leitea Universidade Federal de Ouro Preto, Department of Geology, Campus Morro do Cruzeiro, Ouro Preto, MG, BrazilORCID Iconhttps://orcid.org/0000-0002-9789-3786View further author information
ORCID Icon,
Diego D. Diasc Universidade Federal de Ouro Preto, Department of Biodiversity, Evolution and Environment, Campus Morro do Cruzeiro, Ouro Preto, MG, BrazilView further author information
,
Maria Cristina T. B. Messiasc Universidade Federal de Ouro Preto, Department of Biodiversity, Evolution and Environment, Campus Morro do Cruzeiro, Ouro Preto, MG, BrazilORCID Iconhttps://orcid.org/0000-0003-0300-9038View further author information
ORCID Icon &
Alessandra R. Kozovitsc Universidade Federal de Ouro Preto, Department of Biodiversity, Evolution and Environment, Campus Morro do Cruzeiro, Ouro Preto, MG, BrazilCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0002-7312-0076View further author information
ORCID Icon
Pages 219-234 | Received 29 Jan 2019, Accepted 24 Aug 2020, Published online: 14 Sep 2020
 
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ABSTRACT

Topsoil transposition is an efficient technique for recovering mining-degraded areas. However, storage time may reduce its functionality. To evaluate the effect of storage and litter addition, physical (microstructure) and chemical (fertility) properties were assessed in stored (3-months) and non-stored topsoils. Twelve months after transposition, regardless of the storage time, soil fertility and microstructure were improved, due to the mechanical work of plant roots recruited from topsoil seed bank or rain, and decomposition of pre-existing plant fragments. Litter addition did not affect chemical attributes but influenced microstructure transformations. Paedogenetic evolution was clearly fed by revegetation establishing a sustainable feedback system.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Fundação de Amparo à Pesquisa do Estado de Minas Gerais [PPM-00678-16].

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