Geography of Beijing. The center of Beijing is located at 39 degrees north latitude and 1 16 degrees east longitude. Located at the northern end of North China Plain. Beijing is surrounded by mountains in the west, north and northeast, and the Great Plains slowly inclines to the Bohai Sea in the southeast. Beijing Plain is 20-60m above sea level, and mountainous areas are generally1000-1500m. Dongling Mountain, which borders Hebei, is 2303 meters above sea level and is the highest peak in Beijing. The territory flows through five major rivers, mainly Chaobai River and North Canal in the east, Yongding River and Juma River in the west.

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The capital of People's Republic of China (PRC). It is a world-famous ancient city with a long history. Located on the northwest edge of North China Plain, it is about150km southeast of Bohai Sea. Area 164 10 km2. The total population of the city149.27 million. There are Du Jun in the north and Xishan in the west, and the mountains account for 62% of the city's area; The southeast is a plain formed by alluvial rivers such as Yongding River and Chaobai River, which slowly inclines to the Bohai Sea. There are many minerals in this mountainous area, such as coal and iron, as well as high-quality building materials, such as granite and marble.

The application research of GIS technology in Beijing urban planning, construction and management has been carried out, and many scientific research results have been obtained. Among them, Beijing underground pipe network graphic database system, Beijing urban planning and construction, the relationship between meteorological conditions and air pollution and other research projects won the first prize of scientific and technological progress of the State Bureau of Surveying and Mapping and the first and second prizes of scientific and technological progress of Beijing respectively. Complete the construction of "National Basic Surveying and Mapping Facilities Project-Unit Project of Beijing Surveying and Mapping Design and Research Institute", and comprehensively improve and strengthen the supporting facilities of software and hardware. A professional technical team of geographic information system has been formed, which can undertake system design and development, data collection and processing, information storage and management, product application and distribution services. A series of data standards and specifications, such as the Classification and Code Standard of Beijing Large-scale Digital Topographic Map Elements and the Specification of Beijing Basic Geographic Information Vector Data Exchange Format, have been compiled and revised. The exploration and practice of digital mapping technology, GIS data processing and storage, database data updating mechanism and database management system are carried out. At present, the database systems of 1:500, 1: 2000 and 1: 10000 topographic maps have been completed, and the databases of place names, road planning and land allocation have been established. While developing and constructing the basic geographic information database, we also actively carry out basic geographic information services and data value-added services, and have successively undertaken the construction of Beijing Tongzhou Highway Maintenance Management System, Beijing Haidian District Reconstruction Information System, Beijing Xicheng District Municipal Management Committee Urban Management Information System, Beijing Public Security Electronic Map System, and municipal transportation infrastructure information system. It has provided basic geographic information data services for more than 0/00 users in this city. These include the municipal government committee, BOCOG and dozens of district and county government functional departments. The main functions of the geographic information center are:

● Database building, updating, maintenance and management of basic geographic information data;

● Design and development of basic geographic information database system;

● Providing basic geographic information services for all sectors of society;

● Construction and security maintenance of basic geographic information data transmission network; Maintain and update internal and external networks;

● Develop and study new surveying and mapping technologies, speed up the transformation of traditional surveying and mapping technologies, and track the development of high and new technologies;

● Complete scientific research projects assigned by higher authorities and research institutes, and do a good job in the application and promotion of scientific and technological achievements.

organization structure

Beijing Geographic Information Center has offices, technology research and development rooms, application development rooms, database management rooms, computer network management rooms and other departments.

Department responsibilities and business scope office: administration, affairs management

Technology research and development