Relação da cobertura vegetal e uso do solo com o NDVI e a temperatura superficial da área não inundável do Pantanal de Cáceres/MT

Silva, Géssica de Jesus; Neves, Sandra Mara Alves da Silva; Paula, Willian Cosme da Silveira de; Silva, Vinicius Neves da

doi:10.20396/sbgfa.v1i2017.2244

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“…According to Ferreira (1997), the low topography of the Amazon River basin, combined with the seasonality of rainfall, results in the flooding of plains for up to six months a year, and the annual fluctuation of the water level of the Amazon River and its tributaries can reach 14 m. These factors promote the formation of soils of sedimentary origin exposed to removal, transport, and deposition processes associated with the water cycle (Silva et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Chemical and textural properties of floodplain forest soils in the Eastern Amazon, Brazil

Avner¹,

Diego²,

Iolanda³

et al. 2023

Afr. J. Agric. Res.

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Soils in floodplain ecosystems are sedimentary and subject to removal, transport, and deposition processes caused mainly by the water cycle, contributing to frequent variations in landscape patterns and continuous transformation of the floodplain environment. Given the constant disturbance caused by flood pulse variability, it is difficult to assess soil properties in floodplain ecosystems. Soil samples were collected at a depth of 0 to 0.10 m at floodplain and upland forest sites between Santarém and Gurupá, Pará State, Brazil. Samples were analyzed for pH H 2 O, aluminium, calcium, magnesium, potassium, phosphorus, total organic carbon, boron, zinc, copper, iron, manganese, sand, silt, and clay. Potential and effective cation-exchange capacity, sum of bases, base saturation, aluminum saturation, and organic matter were calculated. Data were subjected to descriptive analysis, analysis of variance, correlation analysis, and hierarchical clustering. Chemical and textural parameters differed significantly between floodplain and upland forest soils. Soil properties were highly heterogeneous. Aluminium and aluminium saturation had the highest coefficients of variation among floodplain samples, whereas pH H 2 O and base saturation had the lowest. It is possible to infer from the results that floodplain forest soils maintain high levels of fertility. However, this environment also shows high acidity and toxic levels of exchangeable aluminium.

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Section: Introductionmentioning

confidence: 99%