Chungcheongnam-do: region in South Korea
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Chungcheongnam-do, South Korea on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Chungcheongnam-do as of 2014, the overall level of street-network sprawl is 2.56, which is in the 40th to 60th percentile of disconnectedness.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.99, 1.9, 3.4 and 3.52. In each period, new street development in Chungcheongnam-do steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.92 points, but between 1991-2000 and 2001-2014, it rose by just 0.12.
Quantity of street network construction: The street network in Chungcheongnam-do spans a total of 12387 kilometers. The period with the greatest volume of street construction was 2001-2014. These roads have an SNDi of 3.52, which is highly disconnected.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 0.99, 1.66, 2.23 and 2.56. Overall, the SNDi of the aggregate street network has risen: the street network in Chungcheongnam-do has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.67 points, but between 1991-2000 and 2001-2014, it rose by just 0.34.
The level of street-network sprawl in new development in Chungcheongnam-do rose steadily. To get a sense of how street development has changed in Chungcheongnam-do, we can consider two of its most populous cities: Cheonan-si and Asan-si. Out of the two cities, Asan-si does not follow the same trend as the region. The level of street-network sprawl in new development in Asan-si peaked in 1991-2000.
How do development practices in Chungcheongnam-do fare in comparison to others in South Korea? Most recently in 2001-2014, street construction in Chungcheongnam-do was the 1st-most disconnected out of the 15 regions in South Korea. Its position in the ranks since 1975 has risen; relative to other regions in South Korea, street construction in Chungcheongnam-do has become more disconnected. Chungcheongnam-do ranked 7th in 1975, 4th in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
As of 2014, the city with the most disconnected street network in Chungcheongnam-do is Asan-si with an SNDi of 0.93, which is relatively well-connected. Conversely, the most connected city is Cheonan-si with an SNDi of 0.62, which is relatively well-connected. See trends for these cities: Cheonan-si, Asan-si
The level of street-network sprawl in the aggregate network in Chungcheongnam-do rose steadily. To get a sense of how the aggregate street network has changed in Chungcheongnam-do, we can consider two of its most populous cities: Cheonan-si and Asan-si. Disconnectivity in the most populous cities in Chungcheongnam-do follow the same region trend.
To date, Chungcheongnam-do is the 1st-most disconnected out of the 15 regions in South Korea. Its position in the ranks since 1975 has risen; relative to other regions in South Korea, the street network in Chungcheongnam-do has become more disconnected. Chungcheongnam-do ranked 7th in 1975, 2nd in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.