Qiyang: city in Hunan, 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 Qiyang, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Qiyang as of 2014, the overall level of street-network sprawl is 0.94, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.79, 0.72, 1.9 and 0.73. Disconnectivity in street construction in Qiyang follows a zig-zag trend. In 1976-1990, street construction was most disconnected, while construction was most connected in 1991-2000.
Quantity of street network construction: The street network in Qiyang spans a total of 119 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 0.72, 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 1.79, 0.94, 1.0 and 0.94. Disconnectivity in Qiyang's street network follows a zig-zag trend. In 1976-1990, the city was most disconnected; while it was most connected in 1975.
Qiyang and Hunan do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Qiyang followed a zig-zag trend with an overall decrease, while the SNDi of street constructions in Hunan followed a zig-zag trend with an overall decrease.
How do development practices in Qiyang fare in comparison to others in Hunan? Most recently in 2001-2014, street construction in Qiyang was the 62nd-most disconnected out of the 95 cities in Hunan. Its position in the ranks since 1975 has fallen; relative to other cities in Hunan, street construction in Qiyang has become more connected. Qiyang ranked 38th in 1975, 74th in 1976-1990, 28th in 1991-2000 and 62nd in 2001-2014.
Qiyang and China do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Qiyang followed a zig-zag trend with an overall decrease, while the SNDi of street constructions in China followed a zig-zag trend with an overall decrease.
How do development practices in Qiyang fare in comparison to others in China? Most recently in 2001-2014, street construction in Qiyang was the 1099th-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 Qiyang has become more connected. Qiyang ranked 558th in 1975, 1159th in 1976-1990, 523rd in 1991-2000 and 1099th in 2001-2014.
Qiyang and Hunan do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Qiyang followed a zig-zag trend with an overall decrease, while the SNDi of street constructions in Hunan peaked in 1976-1990.
To date, Qiyang is the 79th-most disconnected out of the 95 cities in Hunan. Its position in the ranks since 1975 has fallen; relative to other cities in Hunan, the street network in Qiyang has become more connected. Qiyang ranked 38th in 1975, 74th in 1976-1990, 72nd in 1991-2000 and 79th in 2001-2014.
Qiyang and China do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Qiyang followed a zig-zag trend with an overall decrease, while the SNDi of street constructions in China peaked in 1976-1990.
To date, Qiyang is the 1248th-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 Qiyang has become more connected. Qiyang ranked 558th in 1975, 1153rd in 1976-1990, 1152nd in 1991-2000 and 1248th in 2001-2014.
As of 2015, Qiyang had a built-up area of 7.2 square kilometers, and a population of 158582 people.
These are some other cities with approximately the same population: