Lunda Norte: region in Angola
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 Lunda Norte, Angola on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Lunda Norte as of 2014, the overall level of street-network sprawl is 3.55, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.29, 4.06, 3.5 and 3.39. Street construction in Lunda Norte increased in disconnectivity initially but has since improved. The streets constructed in 1976-1990 were the most disconnected.
Quantity of street network construction: The street network in Lunda Norte spans a total of 6376 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 3.39, 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 3.29, 3.71, 3.72 and 3.55. The aggregate street network in Lunda Norte increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in Lunda Norte peaked in 1976-1990. To get a sense of how street development has changed in Lunda Norte, we can consider three of its most populous cities: Dundo, Cafunfo and Lucapa. Out of the three cities, Dundo and Cafunfo do not follow the same trend as the region. The level of street-network sprawl in new development in Dundo followed a zig-zag trend with an overall decrease. The level of street-network sprawl in new development in Cafunfo followed a zig-zag trend with an overall increase.
How do development practices in Lunda Norte fare in comparison to others in Angola? Most recently in 2001-2014, street construction in Lunda Norte was the 11th-most disconnected out of the 18 regions in Angola. Its position in the ranks since 1975 has fallen; relative to other regions in Angola, street construction in Lunda Norte has become more connected. Lunda Norte ranked 8th in 1975, 5th in 1976-1990, 10th in 1991-2000 and 11th in 2001-2014.
As of 2014, the city with the most disconnected street network in Lunda Norte is Dundo with an SNDi of 3.03, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Cafunfo with an SNDi of 0.55, which is relatively well-connected. See trends for these cities: Cafunfo, Dundo
The level of street-network sprawl in the aggregate network in Lunda Norte peaked in 1991-2000. To get a sense of how the aggregate street network has changed in Lunda Norte, we can consider three of its most populous cities: Dundo, Cafunfo and Lucapa. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Dundo peaked in 1976-1990. The level of street-network sprawl in the aggregate network in Cafunfo followed a zig-zag trend with an overall increase. The level of street-network sprawl in the aggregate network in Lucapa peaked in 1976-1990.
To date, Lunda Norte is the 9th-most disconnected out of the 18 regions in Angola. Its position in the ranks since 1975 has fallen; relative to other regions in Angola, the street network in Lunda Norte has become more connected. Lunda Norte ranked 8th in 1975, 6th in 1976-1990, 8th in 1991-2000 and 9th in 2001-2014.