Historical Fire Extent and Severity Mapping (FESM) - Statewide 2006-07

Fire severity is a metric of the loss of biomass caused by fire. In collaboration with the NSW Rural Fire Service, the department's Remote Sensing & Regulatory Mapping team has developed a semi-automated approach to mapping fire extent and severity through a machine learning framework based on satellite imagery. \r\n\r\nThe method uses standardised classes to allow comparison of different fires across the landscape. The FESM severity classes include: unburnt, low severity (burnt understory, unburnt canopy), moderate severity (partial canopy scorch), high severity (complete canopy scorch, partial canopy consumption), extreme (full canopy consumption). \r\n\r\nHere we provide statewide historical severity mapping of fires >100ha for the 2006-07 fire year, which is based on Landsat satellite imagery (30m pixels). From 2016/17 to the current fire year is covered in the statewide FESM data, which is based on Sentinel 2 satellite imagery (10m pixels).

火灾严重性（Fire severity）是衡量火灾造成生物量损失的核心指标。本部门遥感与监管制图团队与新南威尔士州乡村消防局（NSW Rural Fire Service）合作，基于卫星影像构建机器学习框架，开发出半自动化的林火范围与严重性制图方法。

该方法采用标准化分类体系，以实现不同区域林火之间的横向对比。火灾范围与严重性制图（Fire Extent and Severity Mapping，简称FESM）严重性分类体系包含以下等级：未燃烧、低严重性（林下植被燃烧、冠层未受影响）、中严重性（冠层部分灼焦）、高严重性（冠层完全灼焦、冠层部分焚毁）、极端严重性（冠层完全焚毁）。

本次发布的数据集包含2006-2007林火季内面积大于100公顷的林火全州历史严重性分布图，该数据基于Landsat卫星影像（像素分辨率30米）生成。2016/2017林火季至今的全州FESM数据集，则基于Sentinel 2卫星影像（像素分辨率10米）构建。