Historical Fire Extent and Severity Mapping (FESM) - Pilliga Region

Fire severity is a metric of the loss of biomass caused by fire. In collaboration with the NSW Rural Fire Service, DPE 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 historical severity mapping for the Pilliga region from 1989/90 to 2015/16, which is based on Landsat satellite imagery. From 2016/17 to the current fire year, this region is covered in the statewide FESM data, which is based on Sentinel 2 satellite imagery.

火灾严重性是表征火灾引发生物质损失程度的指标。本研究联合新南威尔士州乡村消防局（NSW Rural Fire Service）与DPE遥感与监管制图团队（DPE Remote Sensing & Regulatory Mapping team），基于卫星影像构建机器学习框架，开发了半自动化的火灾范围与严重性制图方法。

该方法采用标准化分级体系，可实现研究区域内不同火灾事件的横向对比。火灾严重性分级体系（FESM）包含以下等级：未燃烧、低严重性（林下植被燃烧，林冠未受损伤）、中严重性（林冠部分灼伤）、高严重性（林冠完全灼伤、部分林冠被烧毁）、极端严重性（林冠完全烧毁）。

本次我们提供了皮利加（Pilliga）地区1989/90年度至2015/16年度的历史火灾严重性分布图，该数据集基于陆地卫星（Landsat）影像生成。2016/17年度至今，该地区的火灾数据已纳入全州范围的FESM数据集，该数据集基于哨兵2号（Sentinel 2）卫星影像生成。