Background
These tutorials make use of the publicly available Petawawa Research Forest (PRF) dataset... View Dataset
Using Tutorials
These tutorials are designed to be run on Google Colab...
Data Description
Individual Tree Measurements (trees.csv)
Individual tree measurements were taken at permanent sample plots (PSPs) across the PRF in 2018. A data dictionary is provided below summarizing the trees.csv. In this data, each tree is a row and each column is an attribute (e.g., height).
| Column | Definition |
|---|---|
| PlotName | Unique plot identifier |
| TreeID | Unique tree identifier |
| species | Tree common species name |
| Origin | N = natural, P = planted |
| Status | L = Live, D = Dead (decayclass 1 & 2) |
| DBH | Diameter at breast height (cm) |
| CrownClass | Crown class (D, C, I, OS, A, E) |
| DecayClass | Decay class (1, 2, >3) |
| height | Tree top height in meters |
| baha | Basal area/ha |
| codom | Codominant (Y/N) |
| mvol | Gross merchantable volume (m³/ha) |
| tvol | Gross total volume (m³/ha) |
| biomass | Aboveground biomass (kg/ha) |
| size | Sawlog size category |
Plot Locations
File: plots.gpkg
Field plots in the PRF containing the trees in trees.csv are georeferenced,
and their locations are provided in the plots.gpkg file. This is a spatial point
dataset stored in a GeoPackage (.gpkg) file.
Each field plot is circular, with a radius of 14.1m (625m^2). Note that this dataset
is in a point format (i.e., only XY coordinates of plot centers).
| Column | Definition |
|---|---|
| Plot | Same as "PlotName" in trees.csv |
| Date | Date of plot visit |
| Northing | Y coordinate |
| Easting | X coordinate |
| Source | Device used to collect coordinates |
PRF Boundary
File: boundary.gpkg
Polygon dataset in WGS 84 / UTM zone 18N.
PRF Water
File: water.gpkg
Water bodies (lakes, rivers, etc.) in polygon format.
LiDAR-derived 99th Height Percentile (P99)
File: p99.tif
Raster proxy for forest canopy height.
Sentinel-2 Imagery
Files:
- petawawa_s2_2018.tif
- petawawa_s2_2024.tif
Multispectral imagery with 12 bands. All resampled to 10m resolution.
| Band | Wavelength | Description |
|---|---|---|
| B1 | 443.9nm / 442.3nm | Aerosols |
| B2 | 496.6nm / 492.1nm | Blue |
| B3 | 560nm / 559nm | Green |
| B4 | 664.5nm / 665nm | Red |
| B5 | 703.9nm / 703.8nm | Red Edge 1 |
| B6 | 740.2nm / 739.1nm | Red Edge 2 |
| B7 | 782.5nm / 779.7nm | Red Edge 3 |
| B8 | 835.1nm / 833nm | NIR |
| B8A | 864.8nm / 864nm | Red Edge 4 |
| B9 | 945nm / 943.2nm | Water vapor |
| B11 | 1613.7nm / 1610.4nm | SWIR 1 |
| B12 | 2202.4nm / 2185.7nm | SWIR 2 |
Processed using this script: Earth Engine Script
More info: Dataset Overview
LiDAR Point Cloud Subset
Files:
- forest_point_cloud.las
- forest_point_cloud_footprint.gpkg
LiDAR point cloud with XYZ coordinates, in LAS format. Coverage defined by GeoPackage footprint.
Suggested Use of AI
AI tools are helpful, but caution is needed...