Jianyang: city in Fujian, 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 Jianyang, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Jianyang as of 2014, the overall level of street-network sprawl is 2.4, 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 2.26, 4.0, 4.96 and 2.06. Street construction in Jianyang 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 Jianyang spans a total of 115 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.26, 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 2.26, 2.29, 2.45 and 2.4. The aggregate street network in Jianyang increased in disconnectivity initially,but the trend has turned around after 2000.
Jianyang and Fujian 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 Jianyang fare in comparison to others in Fujian? Most recently in 2001-2014, street construction in Jianyang was the 26th-most disconnected out of the 55 cities in Fujian. Its position in the ranks since 1975 has fallen; relative to other cities in Fujian, street construction in Jianyang has become more connected. Jianyang ranked 17th in 1975, 5th in 1976-1990, 5th in 1991-2000 and 26th in 2001-2014.
Jianyang and China do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Jianyang peaked in 1991-2000, while the SNDi of street constructions in China followed a zig-zag trend with an overall decrease.
Jianyang and Fujian do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Jianyang peaked in 1991-2000, while the SNDi of street constructions in Fujian rose steadily.
To date, Jianyang is the 23rd-most disconnected out of the 55 cities in Fujian. Its position in the ranks since 1975 has fallen; relative to other cities in Fujian, the street network in Jianyang has become more connected. Jianyang ranked 17th in 1975, 25th in 1976-1990, 24th in 1991-2000 and 23rd in 2001-2014.
Jianyang and China do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Jianyang peaked in 1991-2000, while the SNDi of street constructions in China peaked in 1976-1990.
As of 2015, Jianyang had a built-up area of 5.82 square kilometers, and a population of 90074 people.
These are some other cities with approximately the same population: