择伐审核
亚像元解混捕捉冠层缺口、集材道与楞场，并对照您的特许经营区边界核查。
针对集材道、冠层缺口扰动与采伐合规的亚像元解混，覆盖整个特许经营区。
Harvest gaps, skid trails and landing decks separated by their non-photosynthetic fraction.
它能发现什么
它检测什么。
| 材料 | 典型产出环境 | 可能的混淆因素 |
|---|---|---|
| Selective Logging Gaps & Skid Corridors | Tropical rainforests, temperate hardwood concessions, and conservation reserves | Natural tree-fall gaps and windthrow patches |
方法
工作原理。
输入校准反射率，每个像元都对照公开参考库进行拟合。
Reflectance ingest
Scenes are read at surface reflectance and reprojected onto a common grid, never resampled.
Fraction unmixing per pixel
Each pixel is decomposed into green vegetation, non-photosynthetic vegetation and soil. Slash and fresh soil are what a selective harvest leaves behind, and both sit in the second and third fractions.
Linear feature extraction
Directional filters connect skid tracks and landings that would be unremarkable pixel by pixel.
Overlay against the concession boundary
Disturbance polygons are intersected with the boundary you supply, and the area inside and outside is reported separately. No timber volume is estimated, because reflectance does not carry it.
技术规格
您得到什么，它在什么数据上运行。
所需环境条件
Method and checks are documented in Axine Applied Spectroscopy Paper #4 · Section 6.1.
适用边界
Works on gaps in the canopy. A tree taken out without breaking the crown above it leaves nothing to see.
