Please use this identifier to cite or link to this item:

Title: Determinação de clusters de enriquecimento/empobrecimento em solos tropicais – um caso de estudo na República Dominicana
Other Titles: Determination of spatial enrichment/impoverishment Clusters in Tropical soils – a Dominican Republic case study
Authors: Araújo, Joana
Albuquerque, Teresa
Fonseca, Rita
Nogueira, Pedro
Pinho, Catarina
Araújo, Alexandre
Editors: Nogueira, Pedro
Moreira, Noel
Roseiro, José
Maia, Miguel
Keywords: Geochemical Characterization
Ordinary Krigging
Local G-clustering
Dominican Republic
Issue Date: Sep-2019
Publisher: Universidade de Évora
Citation: 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.
Abstract: 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.
ISBN: 978-972-778-121-8
Type: article
Appears in Collections:GEO - Artigos em Livros de Actas/Proceedings
ICT - Artigos em Livros de Actas/Proceedings

Files in This Item:

File Description SizeFormat
Artigo3.pdf496.83 kBAdobe PDFView/Open
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois