Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/26668 |
Resumo: | When considering complex scenarios involving several covariates, such as in environmental characterization, a clearer reality, through the dimensional reduction of data, can be achieved. Indeed, maps work as a visualization tool of contaminant spatial patterns, allowing the identification of enriched areas. Eighteen soil samples were gathered in two Dominican drainage basins, characterized by acidic, intermediate, and to a lesser extent basic lithologies. Detrital rock outcrops are also identified, which allowed the identification of distinct geochemical signatures, in both watersheds. A set, of 19 elements (Al, Ca, Fe, K, Mg, Mn, Na, Si, Ti, P, Ba, Co, Cr, Sr, V, Cu, Ni, Pb, Zn and LOI) was measured in the soil. Principal Components Analysis (PCA) was used for dimensionality reduction and for the evaluation of the attributes’ association grade. The selected covariates underwent geostatistical modelling. Ordinary kriging and Local G clustering allowed the definition of High/Low enrichment clusters and the spatial delimitation of enrichment/impoverishment compartments. |
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Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República DominicanaDetermination of spatial enrichment/impoverishment Clusters in Tropical soils – a Dominican Republic case studyGeochemical CharacterizationOrdinary KriggingLocal G-clusteringDominican RepublicWhen considering complex scenarios involving several covariates, such as in environmental characterization, a clearer reality, through the dimensional reduction of data, can be achieved. Indeed, maps work as a visualization tool of contaminant spatial patterns, allowing the identification of enriched areas. Eighteen soil samples were gathered in two Dominican drainage basins, characterized by acidic, intermediate, and to a lesser extent basic lithologies. Detrital rock outcrops are also identified, which allowed the identification of distinct geochemical signatures, in both watersheds. A set, of 19 elements (Al, Ca, Fe, K, Mg, Mn, Na, Si, Ti, P, Ba, Co, Cr, Sr, V, Cu, Ni, Pb, Zn and LOI) was measured in the soil. Principal Components Analysis (PCA) was used for dimensionality reduction and for the evaluation of the attributes’ association grade. The selected covariates underwent geostatistical modelling. Ordinary kriging and Local G clustering allowed the definition of High/Low enrichment clusters and the spatial delimitation of enrichment/impoverishment compartments.Universidade de Évora2020-01-27T14:29:45Z2020-01-272019-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/26668http://hdl.handle.net/10174/26668porAraújo, J., Albuquerque, T., Fonseca, R., Nogueira, P., Pinho, C., Araújo, A.(2019). Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana, XII Congresso Ibérico de Geoquímica, Extended abstracts, p. 57-60.978-972-778-121-8GEOjfaraujo@uevora.ptndrfonseca@uevora.ptpmn@uevora.ptc_pinho@uevora.ptaaraujo@uevora.pt250Araújo, JoanaAlbuquerque, TeresaFonseca, RitaNogueira, PedroPinho, CatarinaAraújo, Alexandreinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:21:38Zoai:dspace.uevora.pt:10174/26668Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:16:56.361212Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana Determination of spatial enrichment/impoverishment Clusters in Tropical soils – a Dominican Republic case study |
title |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana |
spellingShingle |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana Araújo, Joana Geochemical Characterization Ordinary Krigging Local G-clustering Dominican Republic |
title_short |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana |
title_full |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana |
title_fullStr |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana |
title_full_unstemmed |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana |
title_sort |
Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana |
author |
Araújo, Joana |
author_facet |
Araújo, Joana Albuquerque, Teresa Fonseca, Rita Nogueira, Pedro Pinho, Catarina Araújo, Alexandre |
author_role |
author |
author2 |
Albuquerque, Teresa Fonseca, Rita Nogueira, Pedro Pinho, Catarina Araújo, Alexandre |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Araújo, Joana Albuquerque, Teresa Fonseca, Rita Nogueira, Pedro Pinho, Catarina Araújo, Alexandre |
dc.subject.por.fl_str_mv |
Geochemical Characterization Ordinary Krigging Local G-clustering Dominican Republic |
topic |
Geochemical Characterization Ordinary Krigging Local G-clustering Dominican Republic |
description |
When considering complex scenarios involving several covariates, such as in environmental characterization, a clearer reality, through the dimensional reduction of data, can be achieved. Indeed, maps work as a visualization tool of contaminant spatial patterns, allowing the identification of enriched areas. Eighteen soil samples were gathered in two Dominican drainage basins, characterized by acidic, intermediate, and to a lesser extent basic lithologies. Detrital rock outcrops are also identified, which allowed the identification of distinct geochemical signatures, in both watersheds. A set, of 19 elements (Al, Ca, Fe, K, Mg, Mn, Na, Si, Ti, P, Ba, Co, Cr, Sr, V, Cu, Ni, Pb, Zn and LOI) was measured in the soil. Principal Components Analysis (PCA) was used for dimensionality reduction and for the evaluation of the attributes’ association grade. The selected covariates underwent geostatistical modelling. Ordinary kriging and Local G clustering allowed the definition of High/Low enrichment clusters and the spatial delimitation of enrichment/impoverishment compartments. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-09-01T00:00:00Z 2020-01-27T14:29:45Z 2020-01-27 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/26668 http://hdl.handle.net/10174/26668 |
url |
http://hdl.handle.net/10174/26668 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Araújo, J., Albuquerque, T., Fonseca, R., Nogueira, P., Pinho, C., Araújo, A.(2019). Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana, XII Congresso Ibérico de Geoquímica, Extended abstracts, p. 57-60. 978-972-778-121-8 GEO jfaraujo@uevora.pt nd rfonseca@uevora.pt pmn@uevora.pt c_pinho@uevora.pt aaraujo@uevora.pt 250 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade de Évora |
publisher.none.fl_str_mv |
Universidade de Évora |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136651439505408 |