Impervious Surface 2021

The dataset contains basemap features that are typically classified as impervious surface, captured in 2021. Some examples of Impervious Surfaces include: Airport Taxiways, Helipads, Outdoor Building Stairs, Buildings, Sidewalks, Roads, Alleys, Driveways, and Swimming Pools.本数据集涵盖2021年采集的、通常归类为不透水面(impervious surface)的底图要素。不透水面的典型示例包括：机场滑行道、直升机停机坪、室外建筑楼梯、建筑物、人行道、道路、小巷、私家车道及游泳池。