Steep Slopes

Steep slopes for Anne Arundel County, MD. This dataset was created using ESRI's ArcGIS 11.3.0 with the Spatial Analyst extension. The source data was the County's 2023 Digital Elevation Model with a 1 foot resolution. The "Slope" command was used against the DEM to create a raster dataset from the raw DEMs. The "Reclassify" tool was then used to isolate the slope classifications based on County Code (15 - 24.99%, 25% and greater). Next, the "Extract by Attributes" tool was used to extract the desired classifications. Finally, the raster dataset was then converted to a polygon dataset by using the "Raster to Polygon" tool. Please download the shapefiles for the area of interest based on image below. Area 1, Area 2, Area 3, Area 4, Area 5, Area 6, Area 7, Area 8, Area 9, Area 10, Area 11, Area 12

马里兰州安妮阿伦德尔县（Anne Arundel County, MD）陡坡数据集。本数据集通过ESRI的ArcGIS 11.3.0及空间分析（Spatial Analyst）扩展模块制作完成。原始数据源为该县2023年发布的1英尺分辨率数字高程模型（Digital Elevation Model, DEM）。首先使用“坡度（Slope）”工具对原始DEM生成栅格数据集；随后通过“重分类（Reclassify）”工具，依据县级坡度分级标准（15%~24.99%、25%及以上）分离出目标坡度等级；接着调用“按属性提取（Extract by Attributes）”工具提取所需的坡度等级栅格数据；最终借助“栅格转多边形（Raster to Polygon）”工具将栅格数据集转换为矢量多边形数据集。请根据下图下载感兴趣区域的shapefile文件，涵盖区域1至区域12。