Land Survey

Surveyed annually by the director of NGII, in accordance with Article 25 of the Framework Act On The National Land, Article 10 of the Enforcement Decree Of the same act, and the Regulation and National Land Survey (an ordinance by the Ministry of Land, Infrastructure, and Transport (MOLIT)).

A territorial survey on the current spatial status of population, economy, soceity, culture, transportation, environment, landuse, etc in order to support spatial planning and policy making and produce geospatial information of national land.

A set of spatial indicators on six domains of population and society, land and housing, economy and jobs, livelihood and welfare, natioanl infrastructure, and environment and safety that are necessary to systematically diagnose, evaluate, and forecast national conditions.

Territorial indicators are produced by aggregating individual address-based locations of people, buildings, and facilities related to basic living services to grid cells* or producing distance metrics at the unit of grid cell from those locations, and finally reaggregating grid-based indicators to administrative units, such as Eup-myun-dong (town), Si-gun-gu (county), and Si-do (province).

* Grid-based territoral indicators integrate spatial information (locations) and statistical information (attributes) of various status of national land.

The results of the National Land Survey is provided in the forms of annual reports and raw data, openly available at the Natioinal Land Information Platform(http://map.ngii.go.kr/mn/mainPage.do).

Territorial indicators, produced at micro spatial scales based on a grid network over the national land, have proved to compensate for the limitations of traditional statistics based on administrative units*; as the result, small area statistics of population distribution, accessibiltiy to basic living services, and ratio of population accessible to those services within a particular distance, were adopted as policy indicators and have been applied more widely in various spatial planning processes.**

* Statistics provided of population distribution by age groups and analysis results of accessibility to basic living services with consideration to the national minimum standards
** The National Indicators of Balanced Development and the program of Life SOC Complexation (the Presidential Committee on Balanced National Development), urban sustainability assessment indicators (Dept. of Urban Policies, MOLIT), regional development monitoring (Dept. of Regional Policies, MOLIT), Life SOC Planning (The Sejong City), rural spatial structure analysis (the Ministry of Agriculture, Food and Rural Affairs), etc.