Alpine Treeline Ecotone detection (Wei et al. 2020)
Wei et al. 2020 — Spatial detection of alpine treeline ecotones in the Western US · 10.1016/j.rse.2020.111672
Alpine treeline ecotone detection validated against 268 independent field sites. Computes ATEI (Wei et al. 2020) at each site using folia's each: fan-out, then compares predicted treeline elevation against Malanson & Skibbe (2023) ground truth.
Recipe source: demos/ate-analysis/folia.yaml — view folia.yaml
- Input data
- Landsat 8 L2 + 3DEP DEM
- Validation reference
- data/weiss_268_treeline.csv
- Period
- 2013-2022
- Region
- Western US and Canada
- Bounding box
- -125.00, 31.00, -104.00, 49.00
Reference: data/weiss_268_treeline.csv
| metric | observed | threshold | measured by |
|---|---|---|---|
| spatial correlation | 98.1% | ≥ 0.95 | human · 2026-04-02 |
| RMSE | 172.0 | ≤ 250 | human · 2026-04-02 |
| MAE | 133.0 | ≤ 200 | human · 2026-04-02 |
| note | ATEI systematically underestimates treeline elevation by ~125m (bias = -124.6m). Consistent with Wei et al. (2020) who noted ATEI detects the lower ecotone boundary rather than the absolute treeline position. | ≥ 0 | human · 2026-04-02 |
- PaperWei et al. 2020 — Spatial detection of alpine treeline ecotones in the Western US (10.1016/j.rse.2020.111672)
- Specdemos/ate-analysis/folia.yaml
- DataLandsat 8 L2 + 3DEP DEM
- Resultspatial correlation 98.1%
- Validationvs data/weiss_268_treeline.csv
The declarative recipe is the reproduction: paper linked to spec linked to data linked to result linked to validation. Full mechanical provenance ships with the Evidence Bundle.
No forks yet. Forking (change AOI / time / params and re-run) opens in the workbench — a community fork graph is planned (hub Phase 4).
Validation history
- validated latest run spatial correlation 98.1%
A scheduled validation agent re-runs each reproduction and flips the badge on drift (hub Phase 1).