Pedoenvironmental indicators of soil in Western Amazonia, Brazil
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Data
2020-12-01
Autores
Oliveira, Ivanildo Amorim de
Costa Campos, Milton Cesar
Siqueira, Diego Silva [UNESP]
Freitas, Ludmila de
Aquino, Renato Eleoterio de [UNESP]
Oliveira, Flavio Pereira de
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
This study aimed to ascertain what soil attributes may be an indicator of natural and anthropic pedogenic changes in top grassland (TG), low grassland (LG), ecotone zone (EZ), and forest (F) in Western Amazonia. Twenty samples of the diagnostic horizons were collected from the studied pedoenvironments: TG (A 0.0-14 and Bi 0.30-0.66 m); LG (A 0.0-0.15 and C-g1 0.27-0.80 m); EZ (A 0.0-0.15 and Bi 0.32-0.50 m); and forest (F) (A1 0.0-0.15 and B-t1 0.67-0.10 m). Sand, silt, clay, particle density (PD),soil bulk density (BD),saturated soil hydraulic conductivity, calcium (Ca), magnesium (Mg), exchangeable aluminum (Al3+), potassium (K), sodium (Na), phosphorus (P), pH in water and KCl, and organic matter (OM) contents were calculated and submitted to variance analysis. LG is more related to OM and clay than SHC value. These same attributes characterized TG. EZ is highlighted by its higher values and relationship with Al and K. It was concluded that for TG, LG, EZ, and F top soil layers, 28% of natural and anthropic changes can be identified based on sand, clay, pH in KCl, and OM data; on the other hand, subsurface 23% of determinations can be attributed to pH in H2O, Al, Na, and sand.
Descrição
Palavras-chave
Pedoindicators, Soil attribute, Multivariate analysis, Inceptsol, Aqualf, Alfisols
Como citar
Environmental Monitoring And Assessment. Dordrecht: Springer, v. 192, n. 12, 7 p., 2020.