Data
To compute Niva's biodiversity index we need landscape vector layers. These layers will be preprocessed. Here you will find details on each layers and how to build them.
IACS¶
Integrated Administration and Control System (IACS) is a layer that contain crop plots. The informations needed from this layer are:
- Crop plots geometries as polygons.
- Crop ID (It can varry depending on the country).
- NIVA ID for crops (Can be mapped from LUCAS nomenclature). NIVA ID is a nomenclature that gives each crop an ID dependning of the crop type, this will be used to get informations on crop diversity.
QGIS plugin
- Get IACS : Load IACS that fits Region Of Interest.
- Map NIVA ID: Map NIVA ID to IACS.
Artificial¶
Artificial is a layer that contains multiple landascape elements that are considered as impermeable. For elements that are not polygons we apply a buffer to get polygons. This buffer can be fixed or in function of the layer informations. Each elements are desscribe in the table below with the buffer calculation method.
Artificial elements
| Name | Description | Buffer distance |
|---|---|---|
| Buildings | Buildings | None |
| Pylons | Pylons | \(0.5m\) |
| Cemeterys | Cemeterys | None |
| Reservoirs | Reservoirs | None |
| Sports fields | Sports fields | None |
| Linear structures | bridges, wall, fence, tunnel.. | \(0.5m\) |
| Isolated structures | Landscape cross, bell tower.. | \(0.5m\) |
| Dams | Dams | \(0.5m\) |
| Wind turbines | Wind turbines | \(2.5m\) |
| Isolated structures | All isolated structures which are not wind turbines | \(0.5m\) |
| Train lines | Train lines | \(1.25m * \text{number of lanes}\) |
| Routes | Road, trail, stones road, highway... | Describe below |
For route layer, If the feature contain width information this width will be used for buffer distance. For features without width information buffer distance is:
- Mean of width for all features of this route type in the region of interest.
- Default values (in table below) if no features of this type have width information for the region of interest.
| Type | Default buffer distance |
|---|---|
| Country lane | \(0.5m\) |
| Stairs | \(0.5m\) |
| Cycle path | \(1m\) |
| Trail | \(0.5m\) |
| stones road | \(2m\) |
| Single-carriageway road | \(4.2m\) |
| Double-carriageway road | \(4.8m\) |
| Highway | \(9.5m\) |
QGIS plugin
- Get Artificial : Load Artificial that fits Region Of Interest.
Non Agricultural Areas¶
Non agricultural areas (NAA) is a layer that contain surfaces which are not agricultural in the landascape. Mainly is vegetation & trees especially within or between crop plots. These elements should be polygons except isolated tree on which we apply a buffer of \(3m\).
QGIS plugin
- Get SNA : Load NAA that fits Region Of Interest.