Dataset Open Access
Data publication: Plant data of the Horizon 2020 project NEXT
Pospiech, Solveig;
Middleton, Maarit
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"description": "<p>Plant\u2011Soil Chemistry Dataset (Raja 2019 Field Campaign)</p>\n\n<p>## 1. Overview </p>\n\n<p>This repository contains the **final, cleaned chemistry data** that were produced from the 2019 Raja field campaign. <br>\nThe data combine:</p>\n\n<p>* Plant tissue concentrations (leaf, bark, needles, …) for a set of selected elements. <br>\n* Corresponding soil\u2011till depth, point location, lithology and basic tree information. <br>\n* Element\u2011specific relative\u2011standard\u2011deviation (RSD) uncertainties that were calculated from laboratory\u2011derived uncertainty parameters.</p>\n\n<p>All files are provided in **CSV** format (UTF\u20118, `,` separator) and/or the R programming language binary format RData.</p>\n\n<p>*The exact set of tissue files depends on the species/plant\u2011parts that were sampled; the naming convention is `pl` + lower\u2011case abbreviation of the tissue (generated by `abbreviate(Plant, minlength = 2)` + `PlantPart`).*</p>\n\n<p>---</p>\n\n<p>## 2. Column description (common to all tables)</p>\n\n<p>| Column | Meaning | Type |<br>\n|--------|---------|------|<br>\n| `PointID` | Unique identifier for the sampling point (e.g., `NEXT\u20112019\u2011257`). | character |<br>\n| `X` / `Y` | Projected coordinates (Easting / Northing, EPSG 3067). | numeric |<br>\n| `Plant` | Species name (full). | character |<br>\n| `PlantPart` | Plant part sampled (`Leaf`, `Bark`, `Fruit`, …). | character |<br>\n| `Tissue` | Short code: `<abbr> <PlantPart>` (e.g., `Ac Leaf`). | character |<br>\n| `Lithology_updated_Sol` | Detailed lithology description from field notes. | character |<br>\n| `Lith_simpl` | Simplified lithology (e.g., `Mafic rocks`). | character |<br>\n| `TillDepth_cm` | Soil till depth at the point (cm). | numeric |<br>\n| **Element columns** (e.g. `Al`, `As`, `Ca`, …) | Measured concentration **or** relative uncertainty, depending on the file (see below). | numeric |<br>\n| `Tissue` (re\u2011appears) | Same as above – kept for convenience. | character |</p>\n\n<p>### 2.1. Concentration vs. Uncertainty tables </p>\n\n<p>* **`Plant_all_final.csv`** – contains **concentrations** (units as reported by the laboratory, typically mg kg\u207b¹). <br>\n* **`Plant_uncensored_raw.RData`** – contains the very original, untreated data. <br>\n* **`*_uncertainty*.csv`** – the element columns have been **replaced by their relative standard deviation (RSD)**, i.e. a unit\u2011less proportion (`0.12` = 12 % RSD). </p>\n\n<p>If you need both concentration **and** uncertainty for a given point, use the two files together (join on `PointID`).</p>\n\n<p>---</p>\n\n<p>## 3. Usage notes </p>\n\n<p>* **Joining concentration & uncertainty** – the two CSVs 'plant' and 'plant_uncertainty' share the same column order and can be merged on `PointID`. <br>\n* **Missing values** – `NA` indicates either a non\u2011detected element or that no uncertainty parameter was available for that element. <br>\n* **Spatial reference** – coordinates are in **ETRS89 / Lantmäteriet 3006 (EPSG 3067)**, suitable for Swedish national mapping. <br>\n* **Element selection** – in the subdatasets not every element is present in every tissue file; only the elements that passed the QC selection criteria are kept. </p>",
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- Publication date:
- November 4, 2025
- DOI:
-
- Keyword(s):
- data plant Finland geochemistry exploration NEXT
- Related identifiers:
- Cited by:
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- License (for files):
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