Sari Pul: region in Afghanistan
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 Sari Pul, Afghanistan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Sari Pul as of 2014, the overall level of street-network sprawl is 6.54, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 6.54, nan, nan and 4.82. Data was not available in 1976-1990 and 1991-2000.
Quantity of street network construction: The street network in Sari Pul spans a total of 372 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 6.54, 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 6.54, 6.65, 6.73 and 6.54. The aggregate street network in Sari Pul increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in Sari Pul followed a zig-zag trend with an overall decrease. To get a sense of how street development has changed in Sari Pul, we can consider two of its most populous cities: Sar-e Pol and Tukzar. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Sar-e Pol followed a zig-zag trend with an overall decrease. The level of street-network sprawl in new development in Tukzar followed a zig-zag trend.
How do development practices in Sari Pul fare in comparison to others in Afghanistan? Most recently in 2001-2014, street construction in Sari Pul was the 9th-most disconnected out of the 25 regions in Afghanistan. Sari Pul ranked 11th in 1975 and 9th in 2001-2014. There was no ranking in 1976-1990 and 1991-2000 due to unavailable data.
As of 2014, the city with the most disconnected street network in Sari Pul is Tukzar with an SNDi of 4.36, which is highly disconnected. Conversely, the most connected city is Sar-e Pol with an SNDi of 3.74, which is highly disconnected. See trends for these cities: Sar-e Pol, Tukzar
The level of street-network sprawl in the aggregate network in Sari Pul peaked in 1991-2000. To get a sense of how the aggregate street network has changed in Sari Pul, we can consider two of its most populous cities: Sar-e Pol and Tukzar. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Sar-e Pol fell steadily. The level of street-network sprawl in the aggregate network in Tukzar followed a zig-zag trend.
To date, Sari Pul is the 6th-most disconnected out of the 25 regions in Afghanistan. Its position in the ranks since 1975 has risen; relative to other regions in Afghanistan, the street network in Sari Pul has become more disconnected. Sari Pul ranked 11th in 1975, 8th in 1976-1990, 8th in 1991-2000 and 6th in 2001-2014.