Historical Fire Extent and Severity Mapping (FESM) - Macquarie Marshes

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 Macquarie Marshes 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.

火灾烈度是衡量火灾引发生物量损失的量化指标。新南威尔士州规划与环境部（Department of Planning and Environment，DPE）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，开发了一套半自动化的火灾范围与烈度制图方法。

该方法采用标准化分级体系，可实现不同区域火灾事件的跨场景对比。火灾范围与烈度制图（Fire Extent and Severity Mapping，FESM）的烈度分级包含以下类别：未燃、低烈度（仅林下植被被烧毁，林冠层未受波及）、中烈度（林冠出现部分灼损）、高烈度（林冠完全灼损且部分林冠被焚毁）、极端烈度（林冠完全焚毁）。

本次发布的数据集涵盖1989/90年度至2015/16年度麦考里沼泽（Macquarie Marshes）区域的历史火灾烈度制图成果，该系列数据基于陆地卫星（Landsat）影像生成。2016/17年度至当前火灾年度，该区域的火灾烈度数据已纳入全州范围的FESM数据集，其数据源为哨兵2号（Sentinel 2）卫星影像。