U.S. Soil Spectral Reflectance and Physiochemical Properties, 1978

A 1978 study by Purdue University's Laboratory for Applications of Remote Sensing quantitatively defined relationships between soil reflectance and physiochemical properties. The research used a statistical stratification of U.S. climatic zones to select soil samples with a wide range of characteristics, preparing them under uniform one-tenth bar moisture tension for spectroradiometric analysis. The objective was to evaluate climatic and genetic effects on multispectral reflectance to inform soil classification and further research.

Use Cases

• Modeling soil reflectance based on physiochemical properties like moisture and composition mentioned in the description.
• Analyzing the influence of climate and genetic factors on soil spectral signatures as described in the study objectives.
• Developing soil classification systems using spectral properties as a diagnostic tool, as referenced in the methodology.
• Designing agricultural or engineering soil surveys informed by quantified reflectance-property relationships.

Strengths

• Study design used statistical stratification of U.S. climatic zones for sample selection.
• Soil samples were prepared under a controlled, uniform one-tenth bar moisture tension.
• Research objectives are clearly defined for quantifying relationships between reflectance and soil properties.

Limitations

• Last updated 1978-12-31 23:59:59.999000; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Purdue University/Laboratory for Applications of Remote Sensing, via NASA Earthdata.

Collection Method

Laboratory spectroradiometric analysis of prepared soil samples under controlled moisture conditions.

Time Range

1978

Freshness

1978-12-31 23:59:59.999000

Geography

Continental United States, based on stratified climatic zones.