Surkhandarya: 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 Surkhandarya, Uzbekistan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Surkhandarya as of 2014, the overall level of street-network sprawl is 3.26, which is in the 40th to 60th percentile of disconnectedness.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.34, 3.01, 3.82 and 4.02. The disconnectivity of new streets constructed in Surkhandarya fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Surkhandarya spans a total of 2159 kilometers. The period with the greatest volume of street construction was 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 3.34, 3.19, 3.29 and 3.26. Disconnectivity in Surkhandarya's street network follows a zig-zag trend. In 1976-1990, the region was most disconnected; while it was most connected in 1975.
The level of street-network sprawl in new development in Surkhandarya was at its lowest in 1976-1990. To get a sense of how street development has changed in Surkhandarya, we can consider three of its most populous cities: Termez, Denov and Uzun. Out of the three cities, Denov and Uzun do not follow the same trend as the region. The level of street-network sprawl in new development in Denov followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Uzun peaked in 1991-2000.
How do development practices in Surkhandarya fare in comparison to others in Uzbekistan? Most recently in 2001-2014, street construction in Surkhandarya was the 7th-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 Surkhandarya has become more connected. Surkhandarya ranked 6th in 1975, 7th in 1976-1990, 8th in 1991-2000 and 7th in 2001-2014.
As of 2014, the city with the most disconnected street network in Surkhandarya is Uzun with an SNDi of 4.41, which is highly disconnected. Conversely, the most connected city is Denov with an SNDi of 0.86, which is relatively well-connected. See trends for these cities: Denov, Uzun
The level of street-network sprawl in the aggregate network in Surkhandarya followed a zig-zag trend with an overall decrease. To get a sense of how the aggregate street network has changed in Surkhandarya, we can consider three of its most populous cities: Termez, Denov and Uzun. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Termez was at its lowest in 1991-2000. The level of street-network sprawl in the aggregate network in Denov followed a zig-zag trend with an overall increase. The level of street-network sprawl in the aggregate network in Uzun peaked in 1991-2000.
To date, Surkhandarya is the 7th-most disconnected out of the 13 regions in Uzbekistan. Its position in the ranks since 1975 has fallen; relative to other regions in Uzbekistan, the street network in Surkhandarya has become more connected. Surkhandarya ranked 6th in 1975, 6th in 1976-1990, 6th in 1991-2000 and 7th in 2001-2014.