大岗镇: city in Guangdong, 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 大岗镇, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in 大岗镇 as of 2014, the overall level of street-network sprawl is 3.74, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 6.89, 4.59, 2.54 and 3.44. The disconnectivity of new streets constructed in 大岗镇 fell, then rose. In 1991-2000, new street layouts were the most connected.
Quantity of street network construction: The street network in 大岗镇 spans a total of 291 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 3.44, 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 6.89, 5.41, 3.88 and 3.74. Overall, the SNDi of the aggregate street network has fallen: the street network in 大岗镇 has become more connected.
大岗镇 and Guangdong follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these was at its lowest in 1991-2000.
How do development practices in 大岗镇 fare in comparison to others in Guangdong? Most recently in 2001-2014, street construction in 大岗镇 was the 28th-most disconnected out of the 109 cities in Guangdong. Its position in the ranks since 1975 has fallen; relative to other cities in Guangdong, street construction in 大岗镇 has become more connected. 大岗镇 ranked 5th in 1975, 5th in 1976-1990, 24th in 1991-2000 and 28th in 2001-2014.
大岗镇 and China do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in 大岗镇 was at its lowest in 1991-2000, while the SNDi of street constructions in China followed a zig-zag trend with an overall decrease.
How do development practices in 大岗镇 fare in comparison to others in China? Most recently in 2001-2014, street construction in 大岗镇 was the 289th-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 大岗镇 has become more connected. 大岗镇 ranked 17th in 1975, 83rd in 1976-1990, 336th in 1991-2000 and 289th in 2001-2014.
大岗镇 and Guangdong do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in 大岗镇 fell steadily, while the SNDi of street constructions in Guangdong was at its lowest in 1991-2000.
To date, 大岗镇 is the 13th-most disconnected out of the 109 cities in Guangdong. Its position in the ranks since 1975 has fallen; relative to other cities in Guangdong, the street network in 大岗镇 has become more connected. 大岗镇 ranked 5th in 1975, 2nd in 1976-1990, 7th in 1991-2000 and 13th in 2001-2014.
大岗镇 and China do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in 大岗镇 fell steadily, while the SNDi of street constructions in China peaked in 1976-1990.
To date, 大岗镇 is the 137th-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 大岗镇 has become more connected. 大岗镇 ranked 17th in 1975, 31st in 1976-1990, 101st in 1991-2000 and 137th in 2001-2014.
As of 2015, 大岗镇 had a built-up area of 16.03 square kilometers, and a population of 196605 people.
These are some other cities with approximately the same population: