Niihama: city in Ehime, 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 Niihama, Japan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Niihama as of 2014, the overall level of street-network sprawl is 2.19, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.16, 3.96, 11.63 and 5.0. Street construction in Niihama increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in Niihama spans a total of 1060 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.16, 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 2.16, 2.18, 2.18 and 2.19. Overall, the SNDi of the aggregate street network has risen: the street network in Niihama has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.02 points, but between 1991-2000 and 2001-2014, it rose by just 0.01.
Niihama and Ehime follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these peaked in 1991-2000.
How do development practices in Niihama fare in comparison to others in Ehime? Most recently in 2001-2014, street construction in Niihama was the 1st-most disconnected out of the 4 cities in Ehime. Its position in the ranks since 1975 has not changed. Niihama ranked 1st in 1975, 2nd in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Niihama and Japan follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these peaked in 1991-2000.
How do development practices in Niihama fare in comparison to others in Japan? Most recently in 2001-2014, street construction in Niihama was the 9th-most disconnected out of the 109 cities in Japan. Its position in the ranks since 1975 has risen; relative to other cities in Japan, street construction in Niihama has become more disconnected. Niihama ranked 10th in 1975, 7th in 1976-1990, 1st in 1991-2000 and 9th in 2001-2014.
Niihama and Ehime follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Niihama is the 1st-most disconnected out of the 4 cities in Ehime. Its position in the ranks since 1975 has not changed. Niihama ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Niihama and Japan follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Niihama is the 14th-most disconnected out of the 109 cities in Japan. Its position in the ranks since 1975 has fallen; relative to other cities in Japan, the street network in Niihama has become more connected. Niihama ranked 10th in 1975, 12th in 1976-1990, 12th in 1991-2000 and 14th in 2001-2014.
As of 2015, Niihama had a built-up area of 59.19 square kilometers, and a population of 134067 people.
These are some other cities with approximately the same population: