análise multivariada de argissolos da faixa atlântica brasileira multivariate analysis of argisols of the brazilian atlantic coast
Clicks: 177
ID: 210768
2008
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Steady Performance
30.0
/100
177 views
45 readers
AI Quality Assessment
Not analyzed
Readership in this journal
SteadyRanked #119 of 201 articles by views in Revista de saude publica
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 201 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
A faixa atlântica brasileira possui extrema diversidade ambiental, onde é expressiva a ocorrência de Argissolos, descritos e identifcados em diversos estudos, sem que tenham sido exauridas as possibilidades de interpretações. O objetivo deste estudo foi avaliar, por meio da análise multivariada, as principais diferenças nos atributos físicos e químicos de Argissolos da faixa atlântica brasileira. Foram analisados 91 perfis de solos oriundos de levantamentos pedológicos realizados pelo Projeto RADAMBRASIL, agrupados em três domínios geomorfológicos distintos: Planaltos Soerguidos, Planaltos Rebaixados e Tabuleiros Costeiros, por meio da análise de componentes principais e análise de função discriminante. Para isso, foram selecionadas 14 variáveis para identificar as peculiaridades de cada grupo geomorfológico e suas principais diferenças. A análise dos componentes principais demonstrou que os cinco primeiros componentes respondem por aproximadamente 70 % da variação dos dados. A análise integrada confirmou que os Argissolos dos Planaltos Soerguidos são mais rasos, associando maiores taxas de erosão com menor espessura dos horizontes Bt, e são quimicamente pobres, embora mais rejuvenescidos e rasos. Já os Argissolos nos Planaltos Rebaixados, submetidos a um clima mais seco e, ou, sazonal que os situados nos Planaltos Soerguidos e Tabuleiros Costeiros, mostram-se menos intemperizados e com maior CTC. As análises realizadas (componentes principais e análise discriminante) permitem melhor entender as relações geomorfopedológicas dos Argissolos nos diferentes domínios estudados.
The Brazilian Atlantic coast have has extreme environmental diversity, where is expressive the occurrence of Argisols, described and identified in several studies, that do not have exhausted the possibilities of interpretations. The objective of this study was to evaluate the main differences in the physical and chemical properties of Argisols of the Brazilian Atlantic coast by multivariate analysis, allowing inferences on their genesis and fertility. For this purpose, 91 soil profiles from the soil survey reports of the Project RADAMBRASIL were analyzed, and grouped into three distinct geomorphologic domains: Lower dissected plateaus - PR, High dissected plateaus - PS and Coastal tablelands - TC. These profiles were analyzed by principal components and discriminate functions. Fourteen variables were selected to identify peculiarities of each geomorphologic group and the main differences. The principal component analysis showed that the first five components account for approximately 70 % of the data variation. The integrated analysis indicated that the Argisols of the high dissected plateaus are generally shallower and that the highest erosion rates are associated with the thinnest Bt horizons. But although younger and flatter, they are chemically poor. On the other hand, the Argisols in the lower dissected plateaus, in drier and/or more seasonal climates, are less weathered and have a higher CEC. The analyses (principal component and discriminate function analysis) allowed a better understanding of the pedogeomorphological relations of the Argisols in the different domains studied.
The Brazilian Atlantic coast have has extreme environmental diversity, where is expressive the occurrence of Argisols, described and identified in several studies, that do not have exhausted the possibilities of interpretations. The objective of this study was to evaluate the main differences in the physical and chemical properties of Argisols of the Brazilian Atlantic coast by multivariate analysis, allowing inferences on their genesis and fertility. For this purpose, 91 soil profiles from the soil survey reports of the Project RADAMBRASIL were analyzed, and grouped into three distinct geomorphologic domains: Lower dissected plateaus - PR, High dissected plateaus - PS and Coastal tablelands - TC. These profiles were analyzed by principal components and discriminate functions. Fourteen variables were selected to identify peculiarities of each geomorphologic group and the main differences. The principal component analysis showed that the first five components account for approximately 70 % of the data variation. The integrated analysis indicated that the Argisols of the high dissected plateaus are generally shallower and that the highest erosion rates are associated with the thinnest Bt horizons. But although younger and flatter, they are chemically poor. On the other hand, the Argisols in the lower dissected plateaus, in drier and/or more seasonal climates, are less weathered and have a higher CEC. The analyses (principal component and discriminate function analysis) allowed a better understanding of the pedogeomorphological relations of the Argisols in the different domains studied.
| Reference Key |
junior2008revistaanlise
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | ;Waldir de Carvalho Junior;Carlos Ernesto G.R. Schaefer;César da Silva Chagas;Elpídio Inácio Fernandes Filho |
| Journal | Revista de saude publica |
| Year | 2008 |
| DOI |
10.1590/S0100-06832008000500029
|
| URL | |
| Keywords |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.