中国1：100万数字地貌数据（H-47 昌都）

中国数字地貌数据库包括三个层次的数据：（1）中国1:400万形态地貌图（李炳元，1994）和中国1:400万构造地貌图（陈志明，1994）数字栅格图（原始纸质图扫描）、矢量数据（albers投影）、数据说明文档，总数量量达2G。（2）中国1:100万15幅老地貌图（20世纪80年代）的数字栅格图（原始纸质图扫描）、矢量数据（ThansverseMercator投影）和数据说明文档，总数据量达2G。（3）基于遥感影像、地质图、基础地理底图、老地貌图、SRTM-DEM等多源数据解译、更新、集成的全国64幅陆地无缝拼接的地貌数据，以100万标准分幅方式存储，ThansverseMercator投影，数据量达2G以上。以及中国1:100万数字地貌分类体系及中国数字地貌遥感解译技术规程等说明文档。

The China Digital Geomorphology Database includes three tiers of data:
(1) Digital raster maps (scanned from original paper maps), vector data (Albers projection), and data documentation for the 1:4,000,000 Chinese morphologic geomorphology map (Li Bingyuan, 1994) and the 1:4,000,000 Chinese tectonic geomorphology map (Chen Zhiming, 1994), with a total data volume of 2 GB.
(2) Digital raster maps (scanned from original paper maps), vector data (Transverse Mercator projection), and data documentation for 15 legacy 1:1,000,000 geomorphology maps (from the 1980s), with a total data volume of 2 GB.
(3) Nationwide 64-map-sheet land seamless mosaic geomorphology data interpreted, updated and integrated from multi-source data including remote sensing imagery, geological maps, basic geographic base maps, legacy geomorphology maps and SRTM-DEM. The data is stored in the 1:1,000,000 standard map sheet division mode with Transverse Mercator projection, with a total data volume exceeding 2 GB.
Additionally, the database also provides supporting documentation such as the China 1:1,000,000 Digital Geomorphology Classification System and the Technical Specifications for Remote Sensing Interpretation of China Digital Geomorphology.

搜集汇总

背景与挑战

背景概述

该数据集是中国1:100万数字地貌数据库的昌都（H-47）分幅数据，包含基于遥感影像等多源数据解译的形态成因和结构类型地貌信息，采用Transverse Mercator投影，数据质量可靠，适用于地貌学研究。