South: region in Lebanon
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 South, Lebanon on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in South as of 2014, the overall level of street-network sprawl is 3.27, 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 3.22, 3.07, 4.55 and 3.67. Disconnectivity in street construction in South follows a zig-zag trend. In 1976-1990, street construction was most disconnected, while construction was most connected in 1991-2000.
Quantity of street network construction: The street network in South spans a total of 2878 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 3.07, which is in the 40th to 60th percentile of disconnectedness.
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 3.22, 3.14, 3.24 and 3.27. The SNDi of the aggregate street network in fell at first, but South has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in South followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in South, we can consider two of its most populous cities: Saida and Tyre. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Saida was at its lowest in 1976-1990. The level of street-network sprawl in new development in Tyre peaked in 1991-2000.
How do development practices in South fare in comparison to others in Lebanon? Most recently in 2001-2014, street construction in South was the 5th-most disconnected out of the 6 regions in Lebanon. Its position in the ranks since 1975 has fallen; relative to other regions in Lebanon, street construction in South has become more connected. South ranked 1st in 1975, 3rd in 1976-1990, 2nd in 1991-2000 and 5th in 2001-2014.
As of 2014, the city with the most disconnected street network in South is Tyre with an SNDi of 2.34, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Saida with an SNDi of 2.05, which is relatively well-connected. See trends for these cities: Saida, Tyre
The level of street-network sprawl in the aggregate network in South was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in South, we can consider two of its most populous cities: Saida and Tyre. Out of the two cities, Tyre does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Tyre rose steadily.
To date, South is the 3rd-most disconnected out of the 6 regions in Lebanon. Its position in the ranks since 1975 has fallen; relative to other regions in Lebanon, the street network in South has become more connected. South ranked 1st in 1975, 2nd in 1976-1990, 3rd in 1991-2000 and 3rd in 2001-2014.