Amazon Forest Soil Trace Gas Flux and Fertilization Data 1999-2001

NASA's LBA-ECO ND-02 dataset contains results from a two-year nitrogen and phosphorus fertilization experiment in a 6-year-old secondary Amazon forest on an abandoned pasture in Pará, Brazil. It measures tree biomass growth, soil nutrient uptake, and trace gas emissions like nitric oxide and nitrous oxide in response to different fertilizer treatments. The study investigates nutrient limitation in young secondary forests on nutrient-poor Oxisol soils.

Use Cases

• Analyzing tree biomass growth response to nitrogen-only versus combined nitrogen and phosphorus fertilization treatments.
• Studying nitric oxide and nitrous oxide emission pulses following fertilizer application in tropical soils.
• Investigating soil faunal abundance changes and nutrient immobilization potential in fertilized forest plots.
• Comparing phosphorus uptake efficiency by plants against applied fertilizer doses in a clayey Oxisol environment.
• Modeling the role of nitrogen limitation in secondary forest growth on previously degraded pastureland.

Strengths

• Data originates from a controlled, multi-year fertilization experiment with specific N (100 kg/ha) and P (50 kg/ha) application rates.
• Measures multiple response variables including tree biomass, soil gas emissions, faunal abundance, and nutrient assays over a two-year period.
• Study site is well-defined: a 6-year-old secondary forest on an abandoned cattle pasture in Pará, Brazil, providing clear ecological context.
• Cross-platform presence on Data.gov and NASA EarthData indicates recognized scientific importance and institutional backing.

Limitations

• Specific column names, row counts, and dataset size are not provided by any source, limiting detailed structural assessment.
• Conflicting last updated dates exist between platforms (2001 on NASA EarthData vs. 2026 on Data.gov), creating uncertainty about metadata freshness.
• The dataset's license is ambiguously listed as 'other-license-specified' on Data.gov, requiring further investigation for reuse.

Provenance

Source

National Aeronautics and Space Administration (NASA), LBA-ECO project.

Collection Method

Field experiment measuring biomass, soil nutrients, and trace gas fluxes from fertilized and control plots in a secondary forest chronosequence.

Time Range

1999-2001

Freshness

2026-03-13 01:12:00.232253

Geography

Pará, Brazil, Amazon basin.