中国1：100万数字地貌数据（E-51 碧瑶）

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 graphics (scanned from original paper maps), vector data (in Albers projection), and data documentation for the 1:4,000,000-scale Chinese morphological geomorphic map (compiled by Li Bingyuan, 1994) and 1:4,000,000-scale Chinese tectonic geomorphic map (compiled by Chen Zhiming, 1994), with a total data volume of 2 GB.
(2) Digital raster graphics (scanned from original paper maps), vector data (in Transverse Mercator projection), and data documentation for 15 sets of 1:1,000,000-scale old Chinese geomorphic maps from the 1980s, with a total data volume of 2 GB.
(3) Seamlessly mosaicked national terrestrial geomorphic data consisting of 64 sheets, stored in 1:1,000,000-scale standard map sheet divisions and projected in Transverse Mercator. This dataset was interpreted, updated and integrated using multi-source data including remote sensing imagery, geological maps, fundamental geographic base maps, old geomorphic maps, SRTM-DEM and other relevant data, with a total data volume of over 2 GB.
Additionally, supporting documents such as the China 1:1,000,000-scale Digital Geomorphology Classification System and the Technical Specifications for Remote Sensing Interpretation of China Digital Geomorphology are also included.

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，专门针对碧瑶区域（E-51图幅），基于2000年的多源数据（如Landsat TM/ETM遥感影像、SRTM高程数据、地质图等）进行解译和集成，采用Thansverse Mercator投影和分层分级方法，按照形态成因类型和形态结构类型组织地貌信息。数据质量较高，解译比例尺为1:10万，遥感定性判读准确率不低于95%，最小图斑面积为1.5km²，适用于地貌学研究和地理科学数据分析。