Geoskill: Forest Disturbance Alert
Detect forest disturbance from multi-temporal NDVI. Use when the user wants to analyze changes, detect hazards, or generate assessment reports.
ruiduobao
@ruiduobao
Install
$ openclaw skills install @ruiduobao/geoskill-forest-disturbance-alertForest Disturbance Alert
Detect forest disturbance from multi-temporal NDVI.
CLI Usage
python scripts/forest_disturbance_alert.py --baseline baseline.tif --current current.tif
python scripts/forest_disturbance_alert.py --baseline baseline.tif --current current.tif --threshold 0.25
python scripts/forest_disturbance_alert.py --baseline baseline.tif --current current.tif --output-dir my_output
Parameters
| Argument | Required | Default | Description |
|---|---|---|---|
--baseline | Yes | — | Path to baseline (undisturbed) NDVI raster |
--current | Yes | — | Path to current NDVI raster (same grid as --baseline) |
--threshold | No | 0.2 | NDVI drop threshold (current − baseline < −threshold is flagged) |
--output-dir, -o | No | disturbance-output | Directory to write outputs |
Output
| File | Description |
|---|---|
disturbance-report.json | Machine-readable disturbance stats (affected area, severity classes) |
report.html | Human-readable HTML report |
output-manifest.json | Run metadata + result summary |
Exit Codes
| Code | Meaning |
|---|---|
| 0 | Success |
| 2 | Argument error |
| 7 | Processing failure |
数据下载
本 skill 可自动从 Microsoft Planetary Computer 下载数据 (无需 API key):
python forest_disturbance_alert.py --bbox 116,39,117,40 --date-range 2024-06-01,2024-06-30 --output-dir <tmp>
--bbox W,S,E,N: WGS-84 边界框 (西, 南, 东, 北)--date-range START,END: 日期范围 (YYYY-MM-DD,YYYY-MM-DD)--aoi-file <path.geojson>: 替代 --bbox 的 GeoJSON 多边形--cache-dir <path>: 缓存目录 (默认 ~/.geoskill_cache)
当用户只给 --bbox + --date-range (没有 --baseline) 时，skill 自动下载数据。
当用户给 --baseline 时，走原文件路径 (向后兼容)。
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