Songyuan: city in Jilin, China
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 Songyuan, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Songyuan as of 2014, the overall level of street-network sprawl is 1.07, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.24, -0.26, 1.06 and 1.25. The disconnectivity of new streets constructed in Songyuan fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Songyuan spans a total of 328 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 1.24, 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 1.24, 1.07, 1.07 and 1.07. The SNDi of the aggregate street network in fell at first, but Songyuan has worsened in disconnectivity since 2000.
Songyuan and Jilin do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Songyuan was at its lowest in 1976-1990, while the SNDi of street constructions in Jilin followed a zig-zag trend with an overall decrease.
How do development practices in Songyuan fare in comparison to others in Jilin? Most recently in 2001-2014, street construction in Songyuan was the 18th-most disconnected out of the 42 cities in Jilin. Its position in the ranks since 1975 has risen; relative to other cities in Jilin, street construction in Songyuan has become more disconnected. Songyuan ranked 19th in 1975, 29th in 1976-1990, 12th in 1991-2000 and 18th in 2001-2014.
Songyuan and China do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Songyuan was at its lowest in 1976-1990, while the SNDi of street constructions in China followed a zig-zag trend with an overall decrease.
How do development practices in Songyuan fare in comparison to others in China? Most recently in 2001-2014, street construction in Songyuan was the 923rd-most disconnected out of the 1651 cities in China. Its position in the ranks since 1975 has fallen; relative to other cities in China, street construction in Songyuan has become more connected. Songyuan ranked 738th in 1975, 1410th in 1976-1990, 764th in 1991-2000 and 923rd in 2001-2014.
Songyuan and Jilin do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Songyuan was at its lowest in 1991-2000, while the SNDi of street constructions in Jilin followed a zig-zag trend with an overall decrease.
To date, Songyuan is the 26th-most disconnected out of the 42 cities in Jilin. Its position in the ranks since 1975 has fallen; relative to other cities in Jilin, the street network in Songyuan has become more connected. Songyuan ranked 19th in 1975, 25th in 1976-1990, 25th in 1991-2000 and 26th in 2001-2014.
Songyuan and China do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Songyuan was at its lowest in 1991-2000, while the SNDi of street constructions in China peaked in 1976-1990.
To date, Songyuan is the 1182nd-most disconnected out of the 1651 cities in China. Its position in the ranks since 1975 has fallen; relative to other cities in China, the street network in Songyuan has become more connected. Songyuan ranked 738th in 1975, 1100th in 1976-1990, 1121st in 1991-2000 and 1182nd in 2001-2014.
As of 2015, Songyuan had a built-up area of 66.01 square kilometers, and a population of 487549 people.
These are some other cities with approximately the same population: