Khuzestan: region in Iran
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 Khuzestan, Iran on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Khuzestan as of 2014, the overall level of street-network sprawl is 2.37, 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 2.09, 1.6, 2.44 and 3.6. The disconnectivity of new streets constructed in Khuzestan fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Khuzestan spans a total of 15451 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 3.6, 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 2.09, 1.72, 1.85 and 2.37. The SNDi of the aggregate street network in fell at first, but Khuzestan has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Khuzestan was at its lowest in 1976-1990. To get a sense of how street development has changed in Khuzestan, we can consider three of its most populous cities: Ahwaz, Dezful and Abadan. Out of the three cities, Ahwaz and Abadan do not follow the same trend as the region. The level of street-network sprawl in new development in Ahwaz rose steadily. The level of street-network sprawl in new development in Abadan followed a zig-zag trend with an overall increase.
How do development practices in Khuzestan fare in comparison to others in Iran? Most recently in 2001-2014, street construction in Khuzestan was the 18th-most disconnected out of the 31 regions in Iran. Its position in the ranks since 1975 has risen; relative to other regions in Iran, street construction in Khuzestan has become more disconnected. Khuzestan ranked 30th in 1975, 28th in 1976-1990, 28th in 1991-2000 and 18th in 2001-2014.
As of 2014, the city with the most disconnected street network in Khuzestan is Bandar-e Emam Khomeini with an SNDi of 3.21, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Shush with an SNDi of 0.77, which is relatively well-connected. See trends for these cities: Shush, Bandar-e Emam Khomeini
The level of street-network sprawl in the aggregate network in Khuzestan was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Khuzestan, we can consider three of its most populous cities: Ahwaz, Dezful and Abadan. Out of the three cities, Ahwaz does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Ahwaz rose steadily.
To date, Khuzestan is the 29th-most disconnected out of the 31 regions in Iran. Its position in the ranks since 1975 has risen; relative to other regions in Iran, the street network in Khuzestan has become more disconnected. Khuzestan ranked 30th in 1975, 29th in 1976-1990, 29th in 1991-2000 and 29th in 2001-2014.