Fukushima: region in Japan
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 Fukushima, Japan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Fukushima as of 2014, the overall level of street-network sprawl is 2.35, 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 2.3, 2.11, 3.08 and 3.15. The disconnectivity of new streets constructed in Fukushima fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Fukushima spans a total of 26264 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.3, which is in the 40th to 60th percentile of disconnectedness.
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 2.3, 2.26, 2.32 and 2.35. The SNDi of the aggregate street network in fell at first, but Fukushima has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Fukushima was at its lowest in 1976-1990. To get a sense of how street development has changed in Fukushima, we can consider three of its most populous cities: Koriyama, Fukushima and 泉町黒須野. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Koriyama followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Fukushima followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in 泉町黒須野 peaked in 1991-2000.
How do development practices in Fukushima fare in comparison to others in Japan? Most recently in 2001-2014, street construction in Fukushima was the 15th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has fallen; relative to other regions in Japan, street construction in Fukushima has become more connected. Fukushima ranked 2nd in 1975, 22nd in 1976-1990, 15th in 1991-2000 and 15th in 2001-2014.
As of 2014, the city with the most disconnected street network in Fukushima is Fukushima with an SNDi of 3.09, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Koriyama with an SNDi of 0.88, which is relatively well-connected. See trends for these cities: Koriyama, Fukushima
The level of street-network sprawl in the aggregate network in Fukushima was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Fukushima, we can consider three of its most populous cities: Koriyama, Fukushima and 泉町黒須野. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Koriyama was at its lowest in 1991-2000. The level of street-network sprawl in the aggregate network in Fukushima followed a zig-zag trend with an overall decrease. The level of street-network sprawl in the aggregate network in 泉町黒須野 peaked in 1991-2000.
To date, Fukushima is the 6th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has fallen; relative to other regions in Japan, the street network in Fukushima has become more connected. Fukushima ranked 2nd in 1975, 6th in 1976-1990, 6th in 1991-2000 and 6th in 2001-2014.