USA SSURGO - Corrosion Potential for Steel

Metals and other materials gradually deteriorate through chemical reactions with their environment. This process, known as corrosion, occurs slowly in some soils and more quickly in other. When in contact with soil, the iron in steel is dissolved and the steel weakened through chemical processes that convert iron into its ions. This layer classifies soils with low, moderate, and high rates of corrosion of uncoated steel based on drainage class, acidity, and electrical conductivity of the soil. For more information on the classification system, see the National Soil Survey Handbook. Low corrosion risk Moderate corrosion risk High corrosion risk Dataset Summary Phenomenon Mapped: Corrosion of steel Geographic Extent: Contiguous United States, Alaska, Hawaii, Puerto Rico, Guam, US Virgin Islands, Northern Mariana Islands, Republic of Palau, Republic of the Marshall Islands, Federated States of Micronesia, and American Samoa. Projection: Web Mercator Auxiliary Sphere Data Coordinate System: WKID 5070 USA Contiguous Albers Equal Area Conic USGS version (contiguous US, Puerto Rico, US Virgin Islands), WKID 3338 WGS 1984 Albers (Alaska), WKID 4326 WGS 1984 Decimal Degrees (Guam, Republic of the Marshall Islands, Northern Mariana Islands, Republic of Palau, Federated States of Micronesia, American Samoa, and Hawaii). Units: Classes Cell Size: 30 meters Source Type: Discrete Pixel Type: Unsigned integer Source: Natural Resources Conservation Service Update Frequency: Annual Publication Date: December 2025 Data from the gNATSGO database was used to create the layer. This layer is derived from the 30m soils produced by the Natural Resources Conservation Service (NRCS). The value for steel corrosion is derived from the gSSURGO component table field Corrosion Steel (corsteel). The value in this layer is the dominant condition found within the map unit. What can you do with this layer? This layer is suitable for both visualization and analysis acrossthe 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. Read more in our blogs: Analyzing Soil Capability for Agriculture in the Living Atlas of the World Working with Soil Data from the Living Atlas in ArcGIS Pro 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 "steel corrosion" 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 "steel corrosion" 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.金属与其他材料会通过与所处环境发生化学反应而逐渐劣化，这一过程被称为腐蚀（corrosion）。在部分土壤中该进程进展缓慢，在另一些土壤中则更为迅速。当钢材与土壤接触时，其中的铁元素会发生溶解，钢铁会通过将铁转化为离子的化学过程被削弱。本图层依据土壤的排水等级、酸度与电导率，将土壤划分为未涂层钢材腐蚀速率低、中、高三类。如需了解该分类系统的更多信息，请参阅《国家土壤调查手册》（National Soil Survey Handbook）。低腐蚀风险、中腐蚀风险、高腐蚀风险。数据集摘要：已映射现象：未涂层钢材腐蚀；地理覆盖范围：美国本土、阿拉斯加、夏威夷、波多黎各、关岛、美属维尔京群岛、北马里亚纳群岛、帕劳共和国、马绍尔群岛共和国、密克罗尼西亚联邦和美属萨摩亚。投影：Web墨卡托（Web Mercator）辅助球体；数据坐标系：WKID 5070 美国本土阿伯斯等面积圆锥投影（美国地质调查局版本，适用于美国本土、波多黎各、美属维尔京群岛）；WKID 3338 WGS 1984 阿伯斯投影（适用于阿拉斯加）；WKID 4326 WGS 1984 十进制度（适用于关岛、马绍尔群岛共和国、北马里亚纳群岛、帕劳共和国、密克罗尼西亚联邦、美属萨摩亚及夏威夷）。单位：分类等级；像元大小：30米；数据源类型：离散型；像素类型：无符号整数；数据来源：美国自然资源保护局（Natural Resources Conservation Service, NRCS）；更新频率：年度；发布日期：2025年12月。本图层基于gNATSGO数据库构建，其数据源为美国自然资源保护局生成的30米分辨率土壤栅格。钢材腐蚀等级的取值源自gSSURGO组件表字段Corrosion Steel（corsteel），本图层中的取值对应地图单元内的主导工况。该图层应用场景：本图层适用于ArcGIS系统内的可视化与分析工作。可将其与您自有数据及ArcGIS世界生活地图集（ArcGIS Living Atlas of the World）中的其他图层在ArcGIS Online与ArcGIS Pro中进行组合，制作可独立使用、或用于故事地图及其他应用场景的高性能Web地图。详情可参阅以下博客文章：《分析世界生活地图集中的农业土壤承载力》《在ArcGIS Pro中使用生活地图集的土壤数据》。由于本图层属于ArcGIS世界生活地图集的一部分，因此可轻松添加至您的地图中：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「钢材腐蚀」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」选项卡中的「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，如有需要请展开「门户」选项并选择「生活地图集」。在搜索框中输入「钢材腐蚀」，浏览至目标图层后点击「确定」。在ArcGIS Pro中，您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ArcGIS Pro中的地理处理工具、模型或Python脚本提供高效、强大的输入源。在在线平台中，您可通过筛选按钮与图层内置的栅格功能，对图层进行过滤以显示数据子集。ArcGIS世界生活地图集提供了便捷途径，可让您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，请在下方留言，我们将尽快回复。