Terrestrial Condition Assessment (TCA) Wildfire Hazard Potential - Moderate

Direct Download (Raster Data Gateway) Objective: Identify areas where significant fuel buildup has occurred due to fire suppression, extensive mortality due to natural or anthropogenic causes, or for other reasons. Data: The Wildland Hazard Potential (WHP) represents areas of significant fuel buildup. It is an index that quantifies the relative potential for wildfire that may be difficult to manage and is used as a measure to help prioritize where fuel treatments may be needed. The WHP is a raster geospatial product produced by the USFS Fire Modeling Institute in the Fire, Fuel, and Smoke Program. Higher values have a higher probability of high-intensity fire, with torching, crowning, and other forms of extreme fire behavior. Data used for this metric represent areas classified as “moderate”, “high”, or “very high” wildland hazard potential within fire regime groups I and II*. A mask for non-burnable areas is applied to focus on ecosystems with vegetation that can be modified through management to reduce hazards. The fire regime attribute within the LANDFIRE Biophysical Settings (LF2020_BPS_220) was used to identify moderate fire regimes (Regime groups I and II). Fire regime groups represent expected historical fire regimes based on interactions between vegetation dynamics, fire spread, fire effects, and spatial context. The definitions of the regimes are outlined in the Interagency Fire Regime Condition Class Guidebook. *The 2023 assessment only used moderate hazard potential pixels from the WHP product instead of all three hazard classes. Data Format: Raster data are binary: (1) “moderate”, “high”, or “very high” risk or (0) other in Fire Regimes I and II Spatial Resolution: 30m (*data for 2023 assessment is 270m) Source data: The WHP data are part of the Wildfire Risk to Communities suite of data along with several other data products. More information on the data used for the 2024 assessment can be found here. Links for data used in previous year TCA assessments: 2020-2022 , 2023. Three different versions of LANDFIRE data were used over the years: LF 2014 NGDA US_140_FRG (2020 and 2021), LF 2016 LC16_BPS_200 (2022 and 2023), and LF 2020 LC20_BPS_220 (2024) Additional Resources: Details on Method Changes and Source Data Versions Overview of the Terrestrial Condition Assessment: TCA Hubsite or Landfire Office Hour Presentation Explore the results of the most recent assessment: TCA Interactive Data Viewer Learn more about the TCA KPI: TCA Dashboard直接下载（栅格数据网关） 目标：识别因灭火管控、自然或人为因素导致的植被大量死亡，或其他原因造成可燃物显著累积的区域。 数据：荒野火灾隐患潜力（Wildland Hazard Potential, WHP）代表可燃物显著累积的区域，是一项用于量化难以管控的野火相对潜在风险的指数，可作为优先确定可燃物治理需求区域的衡量标准。WHP是美国林务局（USFS）火灾建模研究所下属火灾、可燃物与烟雾项目组产出的栅格地理空间产品。该指数数值越高，发生高强度野火的概率越高，伴随跃火、树冠火及其他极端火行为。本指标所用数据为火灾制度组I和II中被归类为"中等（moderate）"、"高（high）"或"极高（very high）"的荒野火灾隐患潜力区域。我们对非可燃区域应用掩膜处理，以聚焦于可通过管理措施降低火灾隐患的植被生态系统。本研究借助LANDFIRE生物物理设置（LANDFIRE Biophysical Settings, LF2020_BPS_220）中的火灾制度属性，识别出中等火灾制度组（I和II组）。火灾制度组代表基于植被动态、火蔓延、火效应及空间背景相互作用的历史预期火灾制度。各类火灾制度的定义详见《跨机构火灾制度状况分类指南》。*2023年评估仅使用了WHP产品中的中等隐患潜力像元，而非全部三个隐患等级。 数据格式：栅格数据为二进制格式：处于火灾制度组I和II中且属于"中等（moderate）"、"高（high）"或"极高（very high）"风险的区域取值为1，其余情况取值为0。空间分辨率：30米（*2023年评估所用数据分辨率为270米） 源数据：WHP数据隶属于"社区野火风险"数据集套件，与其他多款数据产品一同发布。2024年评估所用数据的更多信息可在此处查询。历年TCA（陆地状况评估，Terrestrial Condition Assessment）评估所用数据的链接：2020-2022年、2023年。多年来共使用了三个版本的LANDFIRE数据：LF 2014 NGDA US_140_FRG（2020和2021年）、LF 2016 LC16_BPS_200（2022和2023年），以及LF 2020 LC20_BPS_220（2024年） 附加资源： - 方法变更与源数据版本详情 - 陆地状况评估（TCA）概览：TCA枢纽站点或LANDFIRE办公时间演示文稿 - 探索最新评估结果：TCA交互式数据查看器 - 了解更多TCA关键绩效指标（KPI）相关信息：TCA Dashboard