USFS Forest Treatment Areas

HazFuelTrt_PL (Hazardous Fuel Treatments - Polygon) represents activities of hazardous fuel treatment reduction that are polygons. All accomplishments toward the unified hazardous fuels reduction target must meet the following definition: "Vegetative manipulation designed to create and maintain resilient and sustainable landscapes, including burning, mechanical treatments, and/or other methods that reduce the quantity or change the arrangement of living or dead fuel so that the intensity, severity, or effects of wildland fire are reduced within acceptable ecological parameters and consistent with land management plan objectives, or activities that maintain desired fuel conditions. These conditions should be measurable or predictable using fire behavior prediction models or fire effects models." The data came from the Forest Service's Natural Resource Manager (NRM) Forest Activity Tracking System (FACTS), which is the agency standard for managing information about activities related to fire/fuels, silviculture, and invasive species. FACTS is an activity tracking application for all levels of the Forest Service.危险燃料处理（多边形）数据集（HazFuelTrt_PL）指代以多边形要素形式记录的危险燃料削减作业。所有达成统一危险燃料削减目标的作业均需符合如下定义："旨在构建并维持韧性可持续景观的植被调控措施，涵盖火烧、机械处理及其他可减少活体或枯死燃料储量、改变其空间分布的手段，以此在可接受的生态参数范围内降低野火的强度、烈度与影响，且契合土地管理规划目标；或是用于维持理想燃料状态的作业。此类状态可通过火行为预测模型（fire behavior prediction models）或火灾影响模型（fire effects models）实现量化或预判。"该数据来源于美国林务局（Forest Service）的自然资源经理（Natural Resource Manager, NRM）森林活动跟踪系统（Forest Activity Tracking System, FACTS），该系统是该机构管理野火/燃料处置、营林作业及外来物种相关信息的标准工具。FACTS是面向林务局各级单位的活动跟踪应用程序。