China National Digital Geological Map (Public Version at 1∶200 000 Scale) Spatial Database

As the only one of its kind, China National Digital Geological Map (Public Version

at 1:200 000 scale) Spatial Database (CNDGM-PVSD) is based on China’s former nationwide measured results of regional geological survey at 1:200 000 scale, and is also one of the nationwide basic geosciences spatial databases jointly accomplished by multiple organizations of China. Spatially, it embraces 1 163 geological map-sheets (at scale 1:200 000) in both formats of MapGIS and ArcGIS, covering 72% of China’s whole territory with a total data volume of 90GB. Its main sources is from 1:200 000 regional geological survey reports, geological maps, and mineral resources maps with an original time span from mid-1950s to early 1990s. Approved by the State’s related agencies, it meets all the related technical qualification requirements and standards issued by China Geological Survey in data integrity, logic consistency, location accuracy, attribution fineness, and collation precision, and is hence of excellent and reliable quality. The CNDGM-PVSD is an important component of China’s national spatial database categories, serving as a spatial digital platform for the information construction of the State’s national economy, and providing information backbones to the national and provincial economic planning, geohazard monitoring, geological survey, mineral resources exploration as well as macro decision-making.

作为同类中唯一的国家级数据库，中国国家1:20万比例尺公开版数字地质图空间数据库（CNDGM-PVSD）以我国此前完成的全国1:20万比例尺区域地质调查实测成果为基础，同时也是我国多机构联合建成的全国性基础地学空间数据库之一。该数据库包含MapGIS与ArcGIS两种格式的1:20万比例尺地质图幅共计1163幅，覆盖我国全境72%的陆域面积，总数据量达90GB。其数据主要源自1:20万比例尺区域地质调查报告、地质图件及矿产资源图件，原始数据采集的时间跨度为20世纪50年代中期至90年代初期。该数据库经国家相关主管部门审批，在数据完整性、逻辑一致性、位置精度、属性精细度与整饰精度等方面均符合中国地质调查局发布的全部相关技术规范与标准，因此具备优异且可靠的质量。CNDGM-PVSD是我国国家空间数据库体系的重要组成部分，可为国家国民经济信息化建设提供空间数字化平台，并为全国及省级经济规划、地质灾害监测、地质调查、矿产资源勘探以及宏观决策提供核心信息支撑。

搜集汇总

背景与挑战

背景概述

该数据集是中国唯一的1:20万比例尺公开版数字地质图空间数据库，基于全国区域地质调查成果，覆盖中国72%的领土，包含1,163幅地质图，数据量达90GB。数据集来源于1950年代中期至1990年代初的地质调查报告和地图，质量符合中国地质调查局的技术标准，为国家经济规划、地质灾害监测等提供重要信息支持。