FWS_R7_Realty_GeoPDF_Map_Indexes_Feature_Layer

This feature service shows the index grid that is used as the basis for an automated map series covering the National Wildlife Refuges in Alaska. The grid is comprised of a series of tiles, each of which is 25 miles east/west by 25 miles north/south (four townships north/south by 4 ranges east/west). Each tile in the index grid shows the 1:30,000 scale map extents for 604 maps covering all 16 of the National Wildlife Refuges within the State of Alaska. Each of the 604 maps is in the geoPDF format, which allows the maps to be loaded into a GPS-enabled tablet or smartphone for various purposes such as navigation, route planning, data collection, refuge management, etc.本要素服务展示了用于支撑覆盖阿拉斯加州国家野生动物保护区自动化地图系列的基础索引格网（index grid）。该格网由若干图幅瓦片构成，单张瓦片的东西、南北跨度均为25英里（对应南北方向4个镇区、东西方向4个范围带）。该索引格网中的每张瓦片，均标注了覆盖阿拉斯加州全部16座国家野生动物保护区的604幅1:30000比例尺地图的幅面范围。这604幅地图均采用地理PDF（geoPDF）格式，可加载至支持GPS功能的平板电脑或智能手机中，用于导航、路线规划、数据采集、保护区管理等多种场景。