Carbon Isotopes in Amazonian Soil Pools and Gases

Four ASCII data files contain carbon isotope signatures from soil organic matter, roots, and soil gases. Samples were collected from three Brazilian Amazon sites: the ZF-2 INPA reserve, Tapajos National Forest, and Fazenda Vitoria ranch. The dataset is managed by ORNL_CLOUD.

Use Cases

• Analyzing soil carbon turnover rates using delta 13C isotope signatures.
• Comparing carbon isotope composition between mature forests, secondary forests, and managed pastures.
• Investigating root carbon allocation by size class from soil pit samples.
• Studying soil gas carbon isotopes to understand belowground respiration sources.

Strengths

• Includes samples from three distinct Amazonian sites, covering a range of land-use types.
• Contains data from multiple belowground carbon pools: soil organic matter, roots sorted by size, and soil gases.
• Data is structured in 4 ASCII files, indicating a defined format for analysis.

Limitations

• The exact row count, file size, and specific column names are not provided by any source.
• Sources conflict on the last updated date: one lists 1999-07-05, another lists 2026-03-13.
• The license is specified as 'other-license-specified', requiring further investigation for reuse.

Provenance

Source

ORNL_CLOUD

Collection Method

Field collection of soil organic matter, hand-picked roots from soil pits, and soil gas samples.

Time Range

null

Freshness

2026-03 13 01:17:34.708971

Geography

Amazonas and Para, Brazil: ZF-2 INPA reserve, Tapajos National Forest, Fazenda Vitoria ranch.