Soil Gas Flux Data from Amazon Rainfall Exclusion Experiment

Data from 2000-2001 covers a throughfall exclusion experiment in the Tapajos National Forest, Brazil, designed to study drought effects on an Amazonian ecosystem. The dataset measures changes in soil water content, canopy dynamics, and greenhouse gas emissions from manipulated and control forest plots. It is produced by the ORNL_CLOUD organization as part of the LBA-ECO project.

Use Cases

• Analyzing the impact of experimental drought on soil methane and nitrous oxide fluxes.
• Correlating changes in surface (0-2m) and deep (2-11m) soil water content with canopy openness and leaf area index.
• Modeling the relationship between throughfall exclusion and declines in aboveground net primary productivity (stemwood increment and fine litter production).
• Studying species-specific responses, such as declines in photosynthetic capacity and stem radial growth for trees under 15m tall.
• Investigating the effects of soil water depletion on tree fruiting and fine litterfall rates.

Strengths

• Data originates from a controlled, replicated field experiment with 1-hectare treatment and control plots.
• Covers a multi-year period (2000-2001) with detailed exclusion metrics (~890 mm in 2000, ~680 mm in 2001).
• Measures a wide range of ecological variables, from soil gas fluxes to canopy structure and tree growth.

Limitations

• Column names and row counts are not provided by any source, limiting immediate analysis.
• Sources conflict on the last updated date, listing both 2005-04-10 and 2026-03 13.
• The specific license is listed only as 'other-license-specified', requiring further investigation for reuse.

Provenance

Source

ORNL_CLOUD / LBA-ECO project.

Collection Method

Field experiment involving throughfall exclusion using plastic panels and gutters in a 1-ha forest plot.

Time Range

2000 to 2001

Freshness

2026-03-13 01:11:00.077282

Geography

Tapajos National Forest, east-central Amazon, Brazil.