Nanyang: city in Henan, 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 Nanyang, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Nanyang as of 2014, the overall level of street-network sprawl is 1.04, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are -0.22, 1.25, -0.79 and 0.11. Disconnectivity in street construction in Nanyang follows a zig-zag trend. In 1991-2000, street construction was most disconnected, while construction was most connected in 1976-1990.
Quantity of street network construction: The street network in Nanyang spans a total of 622 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 1.25, 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 -0.22, 1.25, 1.17 and 1.04. The aggregate street network in Nanyang increased in disconnectivity initially,but the trend has turned around after 1990.
Nanyang and Henan do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Nanyang followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Henan peaked in 1991-2000.
How do development practices in Nanyang fare in comparison to others in Henan? Most recently in 2001-2014, street construction in Nanyang was the 85th-most disconnected out of the 118 cities in Henan. Its position in the ranks since 1975 has fallen; relative to other cities in Henan, street construction in Nanyang has become more connected. Nanyang ranked 54th in 1975, 40th in 1976-1990, 93rd in 1991-2000 and 85th in 2001-2014.
Nanyang and China follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these followed a zig-zag trend with an overall increase.
How do development practices in Nanyang fare in comparison to others in China? Most recently in 2001-2014, street construction in Nanyang was the 1267th-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 Nanyang has become more connected. Nanyang ranked 1159th in 1975, 974th in 1976-1990, 1225th in 1991-2000 and 1267th in 2001-2014.
Nanyang and Henan follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these peaked in 1976-1990.
To date, Nanyang is the 55th-most disconnected out of the 118 cities in Henan. Its position in the ranks since 1975 has fallen; relative to other cities in Henan, the street network in Nanyang has become more connected. Nanyang ranked 54th in 1975, 39th in 1976-1990, 47th in 1991-2000 and 55th in 2001-2014.
Nanyang and China follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these peaked in 1976-1990.
To date, Nanyang is the 1195th-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 Nanyang has become more connected. Nanyang ranked 1159th in 1975, 1018th in 1976-1990, 1076th in 1991-2000 and 1195th in 2001-2014.
As of 2015, Nanyang had a built-up area of 59.03 square kilometers, and a population of 775927 people.
These are some other cities with approximately the same population: