Jeju: 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 Jeju, South Korea on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Jeju as of 2014, the overall level of street-network sprawl is 0.76, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.36, 0.7, 1.02 and 1.73. In each period, new street development in Jeju steadily grows more disconnected than in the last.
Quantity of street network construction: The street network in Jeju spans a total of 3081 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 0.7, which is relatively well-connected.
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 0.36, 0.61, 0.67 and 0.76. Overall, the SNDi of the aggregate street network has risen: the street network in Jeju has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.25 points, but between 1991-2000 and 2001-2014, it rose by just 0.09.
The level of street-network sprawl in new development in Jeju rose steadily. To get a sense of how street development has changed in Jeju, we can consider one of its most populous cities: Jeju-si. Disconnectivity in the most populous cities in Jeju follow the same region trend.
How do development practices in Jeju fare in comparison to others in South Korea? Most recently in 2001-2014, street construction in Jeju was the 15th-most disconnected out of the 15 regions in South Korea. Its position in the ranks since 1975 has fallen; relative to other regions in South Korea, street construction in Jeju has become more connected. Jeju ranked 14th in 1975, 14th in 1976-1990, 15th in 1991-2000 and 15th in 2001-2014.
As of 2014, the city with the most disconnected street network in Jeju is Jeju-si with an SNDi of 0.29, which is very well-connected. Conversely, the most connected city is Jeju-si with an SNDi of 0.29, which is very well-connected. See trends for these cities: Jeju-si, Jeju-si
The level of street-network sprawl in the aggregate network in Jeju rose steadily. To get a sense of how the aggregate street network has changed in Jeju, we can consider one of its most populous cities: Jeju-si. Disconnectivity in the most populous cities in Jeju follow the same region trend.
To date, Jeju is the 15th-most disconnected out of the 15 regions in South Korea. Its position in the ranks since 1975 has fallen; relative to other regions in South Korea, the street network in Jeju has become more connected. Jeju ranked 14th in 1975, 14th in 1976-1990, 14th in 1991-2000 and 15th in 2001-2014.