中国1：100万数字地貌数据（K-48 临河）

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-scale morphological geomorphic map (Li Bingyuan, 1994) and 1:4,000,000-scale tectonic geomorphic 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 pieces of 1:1,000,000-scale vintage geomorphic maps (1980s) of China, with a total data volume of 2 GB.
3. 64 seamless terrestrial geomorphic data sheets covering the entire China, which were interpreted, updated and integrated from multi-source data including remote sensing imagery, geological maps, fundamental geographic base maps, vintage geomorphic maps and SRTM-DEM, stored in 1:1,000,000 standard map sheet division format with Transverse Mercator projection, with a total data volume exceeding 2 GB. Additionally, there are supporting description documents such as the 1:1,000,000-scale China 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的一部分，覆盖临河地区，基于遥感影像等多源数据解译、更新和集成，采用分层分级的解译方法，按照形态成因类型和形态结构类型组织数据。数据质量高，解译比例尺为1：10万，遥感定性判读准确率不低于95%，定位判读误差不超过2个像元。