USA Federal Lands

In the United States, the federal government manages approximately 28% of the land in the United States. Most federal lands are west of the Mississippi River, where almost half of the land by area is managed by the federal government. Federal lands include 193 million acres managed by the US Forest Service in 154 National Forests and 20 National Grasslands, Bureau of Land Management lands that cover 247 million acres in Alaska and the Western United States, 150 million acres managed for wildlife conservation by the US Fish and Wildlife Service, 84 million acres of National Parks and other lands managed by the National Park Service, and over 30 million acres managed by the Department of Defense. The Bureau of Reclamation manages a much smaller land base than the other agencies included in this layer but plays a critical role in managing the country"s water resources. The agencies included in this layer are: Bureau of Land Management Bureau of Reclamation Department of Defense National Park Service US Fish and Wildlife Service US Forest Service Dataset Summary Phenomenon Mapped: United States federal lands managed by six federal agencies Geographic Extent: 50 United States and the District of Columbia, Puerto Rico, US Virgin Islands, Guam, American Samoa, and Northern Mariana Islands. The layer also includes National Monuments and Wildlife Refuges in the Pacific Ocean, Atlantic Ocean, and the Caribbean Sea. Mosaic Projection: Web Mercator Auxiliary Sphere Data Coordinate System: WGS 1984 Cell Size: 30.92208102 meters Units: Meters Source Type: Discrete Pixel Type: 8-bit unsigned integer Source: BLM, DOD, USFS, USFWS, NPS, PADUS 3.0. Rasterized by Esri from features May 2025. Publication Date: Various - Esri compiled and published this layer in May 2025. See individual agency views for data vintage. The service behind this layer was published with 6 processing templates allowing the user to select lands managed by a single agency. Other layers created from this service using these processing templates include: USA Bureau of Land Management Lands USA Bureau of Reclamation Lands USA Department of Defense Lands USA National Park Service Lands USA Fish and Wildlife Service Lands USA Forest Service Lands A hosted feature service created from these data is also available. The hosted feature service provides the same data in greater detail at larger scales while this layer may render more quickly at small scales. Both services use the same symbology, so together they may provide the map reader a seamless experience at all map scales. What can you do with this Layer? This layer is suitable for both visualization and analysis across the ArcGIS system. This layer can be combined with your data and other layers from the ArcGIS Living Atlas of the World in ArcGIS Online and ArcGIS Pro to create powerful web maps that can be used alone or in a story map or other application. Because this layer is part of the ArcGIS Living Atlas of the World it is easy to add to your map: In ArcGIS Online, you can add this layer to a map by selecting Add then Browse Living Atlas Layers. A window will open. Type "federal lands" in the search box and browse to the layer. Select the layer then click Add to Map. In ArcGIS Pro, open a map and select Add Data from the Map Tab. Select Data at the top of the drop down menu. The Add Data dialog box will open on the left side of the box, expand Portal if necessary, then select Living Atlas. Type "federal lands" in the search box, browse to the layer then click OK. In ArcGIS Pro you can use the built-in raster functions or create your own to create custom extracts of the data. Imagery layers provide fast, powerful inputs to geoprocessing tools, models, or Python scripts in Pro. Online you can filter the layer to show subsets of the data using the filter button and the layer"s built-in raster functions. The ArcGIS Living Atlas of the World provides an easy way to explore many other beautiful and authoritative maps on hundreds of topics like this one. Questions? Please leave a comment below if you have a question about this layer, and we will get back to you as soon as possible.在美国，联邦政府管辖约占全美28%的陆地面积。联邦土地大多分布在密西西比河以西，该区域近半数陆地由联邦政府管理。 联邦土地涵盖以下部分：美国林务局（US Forest Service）管理的1.93亿英亩土地，分布于154个国家森林公园与20个国家草原；土地管理局（Bureau of Land Management）所辖的2.47亿英亩土地，覆盖阿拉斯加及美国西部；美国鱼类及野生动物管理局（US Fish and Wildlife Service）为野生动物保护管理的1.5亿英亩土地；国家公园管理局（National Park Service）管理的8400万英亩国家公园及其他土地；以及美国国防部（Department of Defense）管辖的逾3000万英亩土地。垦务局（Bureau of Reclamation）的管辖范围虽远小于上述机构，但在国家水资源管理中发挥着关键作用。 本图层涵盖的机构包括：土地管理局（BLM）、垦务局（Bureau of Reclamation）、美国国防部（DOD）、国家公园管理局（NPS）、美国鱼类及野生动物管理局（USFWS）、美国林务局（USFS）。 数据集概述 映射对象：由六家联邦机构管理的美国联邦土地 地理范围：美国50个州、哥伦比亚特区、波多黎各、美属维尔京群岛、关岛、美属萨摩亚及北马里亚纳群岛；本图层同时包含太平洋、大西洋及加勒比海区域的国家纪念地与野生动物保护区。 镶嵌投影：Web Mercator辅助球体坐标系 数据坐标系：WGS 1984 像元大小：30.92208102米 单位：米 数据类型：离散型 像素类型：8位无符号整数 数据源：BLM、DOD、USFS、USFWS、NPS及PADUS 3.0。由Esri于2025年5月通过矢量要素栅格化生成。 发布日期：多版本——Esri于2025年5月汇编并发布本图层，各机构数据的更新时间请参见对应机构视图。 本图层依托的服务提供6种处理模板，支持用户选择单一机构管辖的土地。基于该服务通过上述处理模板生成的其他图层包括： 美国土地管理局所辖土地 美国垦务局所辖土地 美国国防部所辖土地 美国国家公园管理局所辖土地 美国鱼类及野生动物管理局所辖土地 美国林务局所辖土地 此外还提供基于本数据制作的托管要素服务。该托管要素服务可在大比例尺下提供更精细的数据，而本图层在小比例尺下渲染速度更快。两类服务采用一致的符号系统，因此可共同为地图读者提供全比例尺下的无缝浏览体验。 本图层的应用场景 本图层适用于ArcGIS生态系统中的可视化与分析工作。用户可将本图层与自有数据及ArcGIS世界生活地图集（ArcGIS Living Atlas of the World）中的其他图层，在ArcGIS Online或ArcGIS Pro中进行组合，制作可独立使用或嵌入故事地图及其他应用的高质量网页地图。由于本图层属于ArcGIS世界生活地图集的一部分，添加至地图的操作十分简便： 在ArcGIS Online中，可通过依次选择「添加」→「浏览生活地图集图层」将本图层添加至地图。此时将弹出窗口，在搜索框中输入「联邦土地」并浏览至目标图层，选中后点击「添加至地图」即可。 在ArcGIS Pro中，打开地图并选择「地图」选项卡下的「添加数据」，在下拉菜单顶部选择「数据」，此时左侧将弹出「添加数据」对话框，若需展开「门户」选项，请先展开该选项，随后选择「生活地图集」。在搜索框中输入「联邦土地」，浏览至目标图层后点击「确定」。 在ArcGIS Pro中，用户可使用内置栅格函数或自定义函数对数据进行定制化提取。影像图层可为Pro中的地理处理工具、模型或Python脚本提供高效且强大的输入源。在在线环境中，用户可通过过滤按钮及图层内置的栅格函数筛选数据子集。 ArcGIS世界生活地图集提供了便捷途径，可用于探索数百个主题下的众多优质权威地图，本图层即为其中一例。 如有疑问？若您对本图层有任何疑问，请在下方留言，我们将尽快回复。