Qianshan: city in Anhui, 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 Qianshan, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Qianshan as of 2014, the overall level of street-network sprawl is 0.38, which is very well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are -1.06, 0.07, 0.14 and 0.6. In each period, new street development in Qianshan steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.14 points, but between 1991-2000 and 2001-2014, it rose by just 0.46.
Quantity of street network construction: The street network in Qianshan spans a total of 119 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 0.6, 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 -1.06, -0.12, 0.13 and 0.38. Overall, the SNDi of the aggregate street network has risen: the street network in Qianshan has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.95 points, but between 1991-2000 and 2001-2014, it rose by just 0.26.
Qianshan and Anhui do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Qianshan rose steadily, while the SNDi of street constructions in Anhui fell steadily.
How do development practices in Qianshan fare in comparison to others in Anhui? Most recently in 2001-2014, street construction in Qianshan was the 42nd-most disconnected out of the 65 cities in Anhui. Its position in the ranks since 1975 has risen; relative to other cities in Anhui, street construction in Qianshan has become more disconnected. Qianshan ranked 44th in 1975, 58th in 1976-1990, 43rd in 1991-2000 and 42nd in 2001-2014.
Qianshan and China do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Qianshan rose steadily, while the SNDi of street constructions in China followed a zig-zag trend with an overall decrease.
How do development practices in Qianshan fare in comparison to others in China? Most recently in 2001-2014, street construction in Qianshan was the 1141st-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 Qianshan has become more disconnected. Qianshan ranked 1267th in 1975, 1348th in 1976-1990, 1056th in 1991-2000 and 1141st in 2001-2014.
Qianshan and Anhui do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Qianshan rose steadily, while the SNDi of street constructions in Anhui fell steadily.
To date, Qianshan is the 53rd-most disconnected out of the 65 cities in Anhui. Its position in the ranks since 1975 has fallen; relative to other cities in Anhui, the street network in Qianshan has become more connected. Qianshan ranked 44th in 1975, 60th in 1976-1990, 57th in 1991-2000 and 53rd in 2001-2014.
Qianshan and China do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Qianshan rose steadily, while the SNDi of street constructions in China peaked in 1976-1990.
To date, Qianshan is the 1456th-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 Qianshan has become more connected. Qianshan ranked 1267th in 1975, 1495th in 1976-1990, 1482nd in 1991-2000 and 1456th in 2001-2014.
As of 2015, Qianshan had a built-up area of 7.49 square kilometers, and a population of 113523 people.
These are some other cities with approximately the same population: