On the link between soil hydromorphy and geomorphological development in the Cerrado (Brazil) wetlands

Autor: Macdex Mutema, Guilherme Taitson Bueno, Vincent Chaplot, César Augusto Moreira, Ilio Rodarte Faria Júnior, Graziele Nogueira, Vania Rosolen
Přispěvatelé: Universidade de São Paulo = University of São Paulo (USP), Universidade Federal de Goiás [Goiânia] (UFG), Agricultural Research Council - Institute for Soil, Climate and Water, Pretoria (ARC-ISCW), Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University (UNESP), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), FAPESP - Fundacao de Amparo a Pesquisa do Estado de Sao Paulo 2014/01131-4 2017/14168-1, Universidade de São Paulo (USP), Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Universidade Estadual Paulista (Unesp), Instituto de Estudos Sócio-Ambiental (IESA), Agricultural Research Council - Agricultural Engineering, Pontifícia Universidade Católica/MG, IRD/CNRS/UPMC/MNHN
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: CATENA
CATENA, 2019, 176, pp.197-208. ⟨10.1016/j.catena.2019.01.022⟩
CATENA, Elsevier, 2019, 176, pp.197-208. ⟨10.1016/j.catena.2019.01.022⟩
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 0341-8162
Popis: Made available in DSpace on 2019-10-06T16:14:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-05-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Mound fields (MF), which consist of numerous isolated mounds, are characteristic of the Cerrado wetlands of Brazil. While there are numerous studies on soil redistribution by termites and by differential particulate erosion, a new hypothesis, supported by metal accumulation in these areas, needs to be tested. This study aimed to investigate the extent to which soil saturation by water, and the associated chemical erosion, might be a key driver of the geomorphological development of the Cerrado wetlands. The study was performed in a typical wetland of Minas Gerais that shows a typical succession from well drained Ferralsols on the plateau to Gleysols on the lowland and the presence of MF at the transition. Soil morphological description was used together with optical microscopy, X-ray fluorescence and physical analyses (grain size and bulk density) to discriminate between the biological (bioturbation) and geochemical origins. Additionally, geochemical mass balance was calculated to estimate the total amount of chemical erosion that had occurred in the area. The morphological observations and the results on soil texture did not point to material redistribution in the MF. In contrast, the results showed that iron-depleted aggregates in depressed zones were sensitive to collapse. Soil saturation by water as the main cause of geochemical erosion and geomorphologic development was confirmed by mass balance calculation. The results fill an important information gap on the formation and evolution of cerrado soil landscapes, which have important consequences for biodiversity and water conservation. Universidade Estadual Paulista (UNESP) Departamento de Petrologia e Metalogenia (DPM), Av. 24A, 1515, Bela Vista Universidade Federal Goiás (UFG) Instituto de Estudos Sócio-Ambiental (IESA) Agricultural Research Council - Agricultural Engineering, PB X519 Universidade Estadual Paulista (UNESP) Departamento de Geologia Aplicada (DGA), Av. 24A, 1515, Bela Vista Pontifícia Universidade Católica/MG, Av. Itaú, 505, Bairro Dom Cabral Laboratoire d'Océanographie et du Climat: Expérimentations et approaches numériques (LOCEAN) UMR 7159 IRD/CNRS/UPMC/MNHN Universidade Estadual Paulista (UNESP) Departamento de Petrologia e Metalogenia (DPM), Av. 24A, 1515, Bela Vista Universidade Estadual Paulista (UNESP) Departamento de Geologia Aplicada (DGA), Av. 24A, 1515, Bela Vista FAPESP: 2014/01131-4 FAPESP: 2017/14168-1
Databáze: OpenAIRE
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