Fire History Records of Fires across Victoria showing the fire scars

This layer represents the spatial extent of fires recorded since 1903 primarily on public land. The layer includes bushfires and DELWP planned burn information. This dataset only shows the fire scars (boundaries) - to allow a simplified view of fire history.\nCFA data on fires occurring on private land has also been included since 2009.\n\nThis data set was updated in march 2022 and is current or 21/22 fire season.\n\nThis dataset presents aggregated historic fire severity classification from 1998 onward for wildfires. It currently has all of the fire sev classification done from FIRE_SEV98 to FIRE_SEV09 as well as Grampians victoria valley complex 2013 and Grampians northern complex 2014 (additional years of severity mapping will be added to this dataset as they become available). Datasets has been reclassified using the Level 2 Classification described in the Post fire Burn Classification Procedure SOP v.1.0 (FEMD, 2014). \nAggregating the old (more detailed) historic severity classes into the current broad level 2 classes is a more conservative approach than aggregating them into the current level 3 classes. . The reason for this approach is that the percentages for the degree of crown scorch do not line-up closely enough to directly transfer the old classes into the new level 3 classes. In all of the classification work documented above, canopy burn remains the highest severity level, canopy scorch is divided up in the levels below this depending on a description or percentage range.\nIn this coverage the most resent (last burnt) severity mapping is displayed, however, where an area has had previous fire events they can be mapped out (interrogated) by using definition query or attribute query or other GIS techniques. \nSeverity classification of non-forest areas: \nIn 2003 (Alpine fire), 2005 (Wilson's Promontory Fire), 2006 (Grampians Ballarat and Moondarra fires), 2007 (Little Desert and Boulder Creek fires) 2009 (Kilmore - Murindindi fires) polygons have been reclassified to the following classes:\n\nBurnt = High Severity\nScorched and Burnt = High Severity\nPartially Burnt = Medium Severity \nScorched and Unburnt = Low Severity\nUnburnt = Unburnt\nUnclassified = Unclassified本图层展示了1903年以来记录的火灾的空间范围（spatial extent），数据覆盖区域以公共土地为主。该图层涵盖丛林野火（bushfires）与DELWP计划烧除的相关信息。本数据集仅展示火烧迹地（fire scars，即边界范围），以简化呈现火灾历史全貌。 自2009年起，本数据集也纳入了私人土地上发生火灾的乡村消防局（Country Fire Authority，CFA）相关数据。 本数据集于2022年3月完成更新，数据时效覆盖至2021/2022火灾季。 本数据集提供了1998年以来野外野火的聚合历史火灾烈度（fire severity）分类数据。目前已涵盖FIRE_SEV98至FIRE_SEV09的全部火灾烈度分类成果，以及2013年维多利亚格兰扁山谷综合体火灾、2014年格兰扁北部综合体火灾的相关数据（后续如有可用的烈度制图数据，将陆续补充至本数据集）。本数据集已依据《灾后火灾分类标准作业程序（Standard Operating Procedure，SOP）v1.0》（FEMD，2014）中描述的二级分类体系完成重分类。 将旧版（更精细）的历史烈度等级聚合为当前通用的二级分类体系，相较于聚合至当前三级分类体系而言，是更为保守的处理方式。采用该方式的原因在于，冠层灼烤（crown scorch）程度的百分比区间无法与新版三级分类体系实现足够精准的直接映射。在上述全部分类工作中，冠层燃烧（canopy burn）始终为最高烈度等级，冠层灼烤则依据描述文本或百分比区间划分为该等级之下的多个烈度层级。 本图层默认展示最新（即最后一次过火）的烈度制图成果；但若某区域曾发生过多次火灾，用户可通过定义查询、属性查询或其他地理信息系统（Geographic Information System，GIS）技术调取该区域的历次过火记录。 非林区的烈度分类规则如下： 针对2003年（高山火灾）、2005年（威尔逊岬火灾）、2006年（格兰扁巴拉腊特与穆恩达拉火灾）、2007年（小沙漠与博尔德溪火灾）以及2009年（基尔莫尔-穆林丁迪火灾）的矢量多边形要素（polygons），已按如下分类体系完成重分类： 已过火 = 高烈度 灼烤且过火 = 高烈度 部分过火 = 中烈度 灼烤且未过火 = 低烈度 未过火 = 未过火 未分类 = 未分类