Nan'an: 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 Nan'an, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Nan'an as of 2014, the overall level of street-network sprawl is 1.91, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are nan, 1.59, -0.3 and 4.79. Data was not available in 1975.
Quantity of street network construction: The street network in Nan'an spans a total of 201 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of nan, which is highly disconnected.
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 nan, 1.59, 1.41 and 1.91. Data was not available in 1975.
Nan'an and Fujian do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, while the SNDi of street constructions in Fujian peaked in 1991-2000.
How do development practices in Nan'an fare in comparison to others in Fujian? Most recently in 2001-2014, street construction in Nan'an was the 6th-most disconnected out of the 55 cities in Fujian. Its position in the ranks since 1975 has risen; relative to other cities in Fujian, street construction in Nan'an has become more disconnected. Nan'an ranked 39th in 1976-1990, 29th in 1991-2000 and 6th in 2001-2014. There was no ranking in 1975 due to unavailable data.
Nan'an and China do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, while the SNDi of street constructions in China followed a zig-zag trend with an overall decrease.
How do development practices in Nan'an fare in comparison to others in China? Most recently in 2001-2014, street construction in Nan'an was the 113th-most disconnected out of the 1651 cities in China. Its position in the ranks since 1975 has risen; relative to other cities in China, street construction in Nan'an has become more disconnected. Nan'an ranked 828th in 1976-1990, 1155th in 1991-2000 and 113th in 2001-2014. There was no ranking in 1975 due to unavailable data.
Nan'an and Fujian do not follow the same trend in the disconnectivity of their aggregate street networks. There was not enough data from the city, while the SNDi of street constructions in Fujian rose steadily.
To date, Nan'an is the 38th-most disconnected out of the 55 cities in Fujian. Its position in the ranks since 1975 has risen; relative to other cities in Fujian, the street network in Nan'an has become more disconnected. Nan'an ranked 44th in 1976-1990, 46th in 1991-2000 and 38th in 2001-2014. There was no ranking in 1975 due to unavailable data.
Nan'an and China do not follow the same trend in the disconnectivity of their aggregate street networks. There was not enough data from the city, while the SNDi of street constructions in China peaked in 1976-1990.
To date, Nan'an is the 736th-most disconnected out of the 1651 cities in China. Its position in the ranks since 1975 has risen; relative to other cities in China, the street network in Nan'an has become more disconnected. Nan'an ranked 837th in 1976-1990, 951st in 1991-2000 and 736th in 2001-2014. There was no ranking in 1975 due to unavailable data.
As of 2015, Nan'an had a built-up area of 20.83 square kilometers, and a population of 118623 people.
These are some other cities with approximately the same population: