Terrestrial Condition Assessment (TCA) Insect and Disease Hazard

Direct Download (Raster Data Gateway) Objective: Identify areas with unhealthy forest conditions as evidenced by a combination of stand and environmental characteristics making them uncharacteristically vulnerable to insect and pathogen outbreaks. Data: The 2018 National Insect and Disease Risk Map (NIDRM) developed by USFS-FHAAST indicates locations where forests are stressed and susceptible to outbreaks of native and non-native insects and diseases. These include forests with overly high stand densities and where soil/site conditions contribute to drought. The basis for assigning risk is the expectation that 25% or more of live basal area (three times the natural background rate of mortality) will die over the next 15 years due to insects and diseases. Because the NIDRM 2018 map is the most recent update, it has been reused each year for TCA Assessments from 2020-present. Format: Raster data are binary: (1) at risk or (0) not at risk Resolution: 240m Source: NIDRM 2018 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 *if you have trouble viewing the Dashboard, please submit a Tableau Viewer Access Request直接下载（栅格数据网关（Raster Data Gateway）） 目标：识别森林健康状况不佳的区域——这类区域凭借林分与环境特征的组合，异于常规地易受虫害与病原物爆发的侵袭。 数据：由美国林务局-森林健康与航空应用科学团队（USFS-FHAAST）编制的2018年全国虫害与病害风险地图（National Insect and Disease Risk Map, NIDRM），标注了森林受胁迫且易受本土及外来虫害与病害爆发影响的区域。此类区域包括林分密度过高的森林，以及土壤/立地条件加剧干旱胁迫的森林。该风险等级的判定依据为：未来15年内，因虫害与病害导致的活立木断面积死亡率将达到25%及以上，为自然背景死亡率的三倍。由于2018年版NIDRM是最新的更新版本，2020年至今的陆地状况评估（Terrestrial Condition Assessment, TCA）每年均复用该地图。 格式：栅格数据为二值格式：(1) 处于风险中，(0) 未处于风险中 分辨率：240米 来源：2018年全国虫害与病害风险地图（NIDRM） 附加资源： - 方法变更与源数据版本详情 - 陆地状况评估概述：TCA专题网站或Landfire办公时段演示文稿 - 查看最新评估成果：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仪表盘 * 若无法正常查看仪表盘，请提交Tableau查看器访问申请