Samarkand: region in Uzbekistan
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 Samarkand, Uzbekistan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Samarkand as of 2014, the overall level of street-network sprawl is 3.49, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.45, 3.35, 3.97 and 4.13. The disconnectivity of new streets constructed in Samarkand fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Samarkand spans a total of 8789 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 3.45, 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 3.45, 3.41, 3.44 and 3.49. The SNDi of the aggregate street network in fell at first, but Samarkand has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Samarkand was at its lowest in 1976-1990. To get a sense of how street development has changed in Samarkand, we can consider three of its most populous cities: Samarkand, Katta-Kurgan and Urgut. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Samarkand rose steadily. The level of street-network sprawl in new development in Katta-Kurgan followed a zig-zag trend with an overall decrease. The level of street-network sprawl in new development in Urgut followed a zig-zag trend with an overall decrease.
How do development practices in Samarkand fare in comparison to others in Uzbekistan? Most recently in 2001-2014, street construction in Samarkand was the 6th-most disconnected out of the 13 regions in Uzbekistan. Its position in the ranks since 1975 has fallen; relative to other regions in Uzbekistan, street construction in Samarkand has become more connected. Samarkand ranked 5th in 1975, 4th in 1976-1990, 6th in 1991-2000 and 6th in 2001-2014.
As of 2014, the city with the most disconnected street network in Samarkand is Зангибай with an SNDi of 3.1, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Samarkand with an SNDi of 2.42, which is in the 40th to 60th percentile of disconnectedness. See trends for these cities: Samarkand, Зангибай
The level of street-network sprawl in the aggregate network in Samarkand was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Samarkand, we can consider three of its most populous cities: Samarkand, Katta-Kurgan and Urgut. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Samarkand rose steadily. The level of street-network sprawl in the aggregate network in Katta-Kurgan followed a zig-zag trend with an overall decrease. The level of street-network sprawl in the aggregate network in Urgut followed a zig-zag trend with an overall decrease.
To date, Samarkand is the 4th-most disconnected out of the 13 regions in Uzbekistan. Its position in the ranks since 1975 has risen; relative to other regions in Uzbekistan, the street network in Samarkand has become more disconnected. Samarkand ranked 5th in 1975, 3rd in 1976-1990, 4th in 1991-2000 and 4th in 2001-2014.