Da’an: city in Guangxi, 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 Da’an, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Da’an as of 2014, the overall level of street-network sprawl is -1.41, which is very well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are -1.17, nan, nan and nan. Data was not available in 1976-1990, 1991-2000 and 2001-2014.
Quantity of street network construction: The street network in Da’an spans a total of 130 kilometers. It is dominated by roads constructed in 2001-2014. 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 -1.17, -1.12, -1.41 and -1.41. The aggregate street network in Da’an increased in disconnectivity initially,but the trend has turned around after 1990.
Da’an and Guangxi 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 Guangxi followed a zig-zag trend with an overall increase.
How do development practices in Da’an fare in comparison to others in Guangxi? out of the 53 cities in Guangxi. Da’an ranked 37th in 1975. There was no ranking in 1976-1990, 1991-2000, and 2001-2014 due to unavailable data.
Da’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 Da’an fare in comparison to others in China? out of the 1651 cities in China. Da’an ranked 1278th in 1975. There was no ranking in 1976-1990, 1991-2000, and 2001-2014 due to unavailable data.
Da’an and Guangxi follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these peaked in 1976-1990.
To date, Da’an is the 53rd-most disconnected out of the 53 cities in Guangxi. Its position in the ranks since 1975 has fallen; relative to other cities in Guangxi, the street network in Da’an has become more connected. Da’an ranked 37th in 1975, 50th in 1976-1990, 52nd in 1991-2000 and 53rd in 2001-2014.
Da’an 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, Da’an is the 1646th-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 Da’an has become more connected. Da’an ranked 1278th in 1975, 1588th in 1976-1990, 1622nd in 1991-2000 and 1646th in 2001-2014.
As of 2015, Da’an had a built-up area of 3.81 square kilometers, and a population of 52803 people.
These are some other cities with approximately the same population: