Ebonyi: region in Nigeria
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 Ebonyi, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Ebonyi as of 2014, the overall level of street-network sprawl is 3.46, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.65, 2.98, 3.31 and 4.02. In each period, new street development in Ebonyi steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.33 points, but between 1991-2000 and 2001-2014, it rose by just 0.71.
Quantity of street network construction: The street network in Ebonyi spans a total of 3061 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 4.02, 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 1.65, 2.91, 2.97 and 3.46. Overall, the SNDi of the aggregate street network has risen: the street network in Ebonyi has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.26 points, but between 1991-2000 and 2001-2014, it rose by just 0.49.
The level of street-network sprawl in new development in Ebonyi rose steadily. To get a sense of how street development has changed in Ebonyi, we can consider three of its most populous cities: Abakaliki, Ozizza and Ishiagu. Out of the three cities, Ozizza and Ishiagu do not follow the same trend as the region. The level of street-network sprawl in new development in Ozizza followed a zig-zag trend. The level of street-network sprawl in new development in Ishiagu followed a zig-zag trend with an overall decrease.
How do development practices in Ebonyi fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Ebonyi was the 18th-most disconnected out of the 37 regions in Nigeria. Its position in the ranks since 1975 has risen; relative to other regions in Nigeria, street construction in Ebonyi has become more disconnected. Ebonyi ranked 28th in 1975, 17th in 1976-1990, 22nd in 1991-2000 and 18th in 2001-2014.
As of 2014, the city with the most disconnected street network in Ebonyi is Ozizza with an SNDi of 4.89, which is highly disconnected. Conversely, the most connected city is Idembia with an SNDi of -0.81, which is very well-connected. See trends for these cities: Idembia, Ozizza
The level of street-network sprawl in the aggregate network in Ebonyi rose steadily. To get a sense of how the aggregate street network has changed in Ebonyi, we can consider three of its most populous cities: Abakaliki, Ozizza and Ishiagu. Out of the three cities, Ozizza and Ishiagu do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Ozizza followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Ishiagu peaked in 1976-1990.
To date, Ebonyi is the 17th-most disconnected out of the 37 regions in Nigeria. Its position in the ranks since 1975 has risen; relative to other regions in Nigeria, the street network in Ebonyi has become more disconnected. Ebonyi ranked 28th in 1975, 18th in 1976-1990, 17th in 1991-2000 and 17th in 2001-2014.