中国1：100万数字地貌数据（H-51 上海）

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 consists of three tiers of data:
(1) Digital raster graphics (scanned from original paper maps), vector data (Albers projection), and data description documents for the 1:4,000,000 China Morphological Geomorphological Map (Li Bingyuan, 1994) and 1:4,000,000 China Structural Geomorphological Map (Chen Zhiming, 1994), with a total data volume of 2 GB.
(2) Digital raster graphics (scanned from original paper maps), vector data (Transverse Mercator projection), and data description documents for 15 vintage 1:1,000,000 scale geomorphological maps compiled in the 1980s, with a total data volume of 2 GB.
(3) 64-piece nationwide seamless land mosaic geomorphological datasets, which were interpreted, updated and integrated from multi-source data including remote sensing imagery, geological maps, base geographic maps, old geomorphological maps and SRTM-DEM. These datasets are stored in the standard 1:1,000,000 map sheet division format with Transverse Mercator projection, with a total data volume exceeding 2 GB. In addition, the database also includes 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一部分，专门覆盖上海区域，数据时间为2000年，基于Landsat TM/ETM、SRTM高程数据等多源数据解译和集成。它采用分层分级方法，遵循地貌制图规范，以Thansverse Mercator投影和标准分幅方式存储，确保地貌单元界线的准确定位和类型属性的确切赋值，最小图斑面积为1.5平方公里，适用于地貌学研究和地理分析。