底图：天地图 · 国家地理信息公共服务平台（国家基础地理信息中心）。审图号
GS(____)____号——发布前请从天地图官网填入当前审图号。
底图仅用于选择区域，版权归天地图所有。
高程数据：Mapzen Terrarium 高程瓦片（Mapzen 托管 · AWS 开放数据），公开可用。按官方署名要求，须逐项列明下列来源：
- ArcticDEM terrain data DEM(s) were created from DigitalGlobe, Inc., imagery and funded under National Science Foundation awards 1043681, 1559691, and 1542736;
- Australia terrain data © Commonwealth of Australia (Geoscience Australia) 2017;
- Austria terrain data © offene Daten Österreichs – Digitales Geländemodell (DGM) Österreich;
- Canada terrain data contains information licensed under the Open Government Licence – Canada;
- Europe terrain data produced using Copernicus data and information funded by the European Union - EU-DEM layers;
- Global ETOPO1 terrain data U.S. National Oceanic and Atmospheric Administration;
- Mexico terrain data source: INEGI, Continental relief, 2016;
- New Zealand terrain data Copyright 2011 Crown copyright (c) Land Information New Zealand and the New Zealand Government (All rights reserved);
- Norway terrain data © Kartverket;
- United Kingdom terrain data © Environment Agency copyright and/or database right 2015. All rights reserved;
- United States 3DEP (formerly NED) and global GMTED2010 and SRTM terrain data courtesy of the U.S. Geological Survey.
本工具输出：3D 预览与灰度高度图仅包含地形高程，不含行政界线、国界、地名与坐标标注，不能作为行政区划或权属依据。