World Surface Water

Water bodies are a key element in the landscape. This layer provides a global map of large water bodies for use inlandscape-scale analysis. Dataset Summary This layer provides access to a 250m cell-sized raster of surface water created by extracting pixels coded as water in the Global Lithological Map and the Global Landcover Map. The layer was created by Esri in 2014. Analysis: Restricted single source analysis. Maximum size of analysis is 16,000 x 16,000 pixels. What can you do with this layer? This layer is suitable for both visualization and analysis. It can be used in ArcGIS Online in web maps and applications and can be used in ArcGIS Desktop. Restricted single source analysis means this layer has size constraints for analysis and it is not recommended for use with other layers in multisource analysis. This layer has query, identify, and export image services available. This layer is restricted to a maximum area of 16,000 x 16,000 pixels - an area 4,000 kilometerson a side or an area approximately the size of Europe. The Living Atlas of the World provides an easy way to explore the landscape layers and many otherbeautiful and authoritative maps on hundreds of topics.水体是地表景观的核心构成要素之一。本图层提供全球大型水体地图，适用于景观尺度的分析工作。 数据集概述：本图层可获取分辨率为250米像元的地表水栅格数据，该数据通过提取全球岩性图（Global Lithological Map）与全球土地覆盖图（Global Landcover Map）中标记为水体的像素生成。本图层由Esri公司于2014年制作完成。 分析说明：仅支持受限单源分析，单次分析的最大像素尺寸为16000×16000。 本图层的应用场景：本图层兼具可视化与分析适配性，可在ArcGIS Online的网页地图与应用程序中使用，也可部署于ArcGIS Desktop环境。 受限单源分析指本图层对分析尺寸存在限制，不建议与其他图层进行多源联合分析。本图层支持查询、识别与影像导出服务。 本图层的分析面积上限为16000×16000像素，对应边长约4000公里，面积大致等同于欧洲大陆。 世界动态地图集（The Living Atlas of the World）为用户提供了便捷的探索途径，可浏览各类景观图层以及数百个主题下的众多精美权威地图。