Yima: 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 Yima, China on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Yima as of 2014, the overall level of street-network sprawl is 3.33, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are nan, nan, 2.79 and 4.34. Data was not available in 1975 and 1976-1990.
Quantity of street network construction: The street network in Yima spans a total of 74 kilometers. It is dominated by roads constructed prior to 1975. 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 nan, nan, 2.77 and 3.33. Data was not available in 1975 and 1976-1990.
Yima and Henan 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 Henan peaked in 1991-2000.
How do development practices in Yima fare in comparison to others in Henan? Most recently in 2001-2014, street construction in Yima was the 5th-most disconnected out of the 118 cities in Henan. Its position in the ranks since 1975 has risen; relative to other cities in Henan, street construction in Yima has become more disconnected. Yima ranked 15th in 1991-2000 and 5th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
Yima 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 Yima fare in comparison to others in China? Most recently in 2001-2014, street construction in Yima was the 159th-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 Yima has become more disconnected. Yima ranked 281st in 1991-2000 and 159th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
Yima and Henan do not follow the same trend in the disconnectivity of their aggregate street networks. There was not enough data from the city, while the SNDi of street constructions in Henan peaked in 1976-1990.
To date, Yima is the 4th-most disconnected out of the 118 cities in Henan. Its position in the ranks since 1975 has risen; relative to other cities in Henan, the street network in Yima has become more disconnected. Yima ranked 6th in 1991-2000 and 4th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
Yima and China do not follow the same trend in the disconnectivity of their aggregate street networks. There was not enough data from the city, while the SNDi of street constructions in China peaked in 1976-1990.
To date, Yima is the 205th-most disconnected out of the 1651 cities in China. Its position in the ranks since 1975 has risen; relative to other cities in China, the street network in Yima has become more disconnected. Yima ranked 338th in 1991-2000 and 205th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
As of 2015, Yima had a built-up area of 8.47 square kilometers, and a population of 90833 people.
These are some other cities with approximately the same population: