Cation Leaching from Forest and Pasture Soils in Para, Brazil

Fazenda Vitoria, a cattle ranch 6 km north of Paragominas, Para, Brazil, is the source for soils collected in 1998. This dataset provides a 2002 laboratory time series of calcium, magnesium, and potassium concentrations extracted from these soils under primary forest, secondary forest, and pasture land uses. The data includes cation concentrations in extract solutions and total cation content removed, generated using water equilibrated with increasing CO2 concentrations.

Use Cases

• Modeling soil cation exchange capacity based on laboratory column extraction results.
• Comparing nutrient leaching rates between primary forest, secondary forest, and pasture land uses.
• Analyzing the time-series relationship between CO2 concentration in extraction water and cation release.
• Assessing the total content of calcium, magnesium, and potassium removed from different soil types.

Strengths

• Provides a controlled laboratory time series from a 2002 study, enabling analysis of temporal leaching dynamics.
• Compares three distinct land-use types (primary forest, secondary forest, pasture) from a specific geographic location.
• Dataset is hosted on multiple platforms (Data.gov, NASA Earthdata), indicating recognized scientific value.

Limitations

• Column names and exact row count are unspecified, limiting immediate understanding of data structure.
• License is ambiguously listed as 'other-license-specified' on Data.gov but 'None' on NASA Earthdata, creating a conflict.
• Metadata completeness is low, with missing author, size, and detailed column information.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Laboratory column extraction study.

Time Range

1998 (soil collection) to 2002 (laboratory study).

Freshness

2026-04-10 01:33:09.359123

Geography

Fazenda Vitoria, 6 km north of Paragominas, Para, Brazil.