Metadata elements for documenting crop samples, soil samples, and measured properties either in the field or laboratory through wet chemistry.
Source: OGC Abstract Specification Topic 20: Observations, measurements, and samples
| Metadata element | Description | Example |
|---|---|---|
| Unique identifier | Unique metadata identifier: e.g. UUID (Universally Unique Identifier) | 123e4567-e89b-12d3-a456-426614174000 |
| sampledFeature | Material sample: e.g. soil, leaf sample, stem sample, grain sample | Soil samples for the field cultivated with rice |
| sourceLocation | Where the sample was collected | Jolanda Di Savoia, Ferrara; XY coordinates (Coordinates UTM-EPSG:32632) |
| storageLocation | Where the sample is stored | University of Milano Bicocca |
| samplingTime | When the sample was collected | April 2023 |
| size | Sample size (e.g. weight in g) | |
| SamplingProcedure | How the samples was collected or prepared | The samples have been collected from 10 Elementary Sampling Units (ESU) (10 ESU in total) and in each ESU, there are 4 plots each of 15*15 m.<br>For each plot, 5 soil samples were collected with a core cotter. These 5 samples were mixed together forming a unique soil sample per plot. Collected soil samples belonged to the top layer of the surface (15-20 cm) |
| Procedure | The analysis method: e.g. ICP-EOS instrument | extraction with barium chloride or ammonium acetate solution and determination by atomic absorption spectroscopy-FAAS |
| observedProperty | The analysed property (e.g. generally concentration of a constituent) | Ca2+ |
| result | The result of the analysis | Measured values |
| unit of measurement | reference quantity chosen from a unit equivalence group | cmol(+) kg-1 |
| resultTime | Analysis date | 15.03.2024 |