Pernambuco: region in Brazil
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 Pernambuco, Brazil on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Pernambuco as of 2014, the overall level of street-network sprawl is 2.57, 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 2.27, nan, 3.31 and 3.49. Data was not available in 1976-1990.
Quantity of street network construction: The street network in Pernambuco spans a total of 30475 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.27, 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 2.27, 2.27, 2.42 and 2.57. Overall, the SNDi of the aggregate street network has risen: the street network in Pernambuco has become more disconnected.
The level of street-network sprawl in new development in Pernambuco followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Pernambuco, we can consider three of its most populous cities: Recife, Petrolina and Caruaru. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Recife followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Petrolina followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Caruaru followed a zig-zag trend with an overall increase.
How do development practices in Pernambuco fare in comparison to others in Brazil? Most recently in 2001-2014, street construction in Pernambuco was the 16th-most disconnected out of the 29 regions in Brazil. Its position in the ranks since 1975 has fallen; relative to other regions in Brazil, street construction in Pernambuco has become more connected. Pernambuco ranked 10th in 1975, 10th in 1976-1990, 12th in 1991-2000 and 16th in 2001-2014.
As of 2014, the city with the most disconnected street network in Pernambuco is Cabo de Santo Agostinho with an SNDi of 2.88, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Serra Talhada with an SNDi of 0.39, which is very well-connected. See trends for these cities: Serra Talhada, Cabo de Santo Agostinho
The level of street-network sprawl in the aggregate network in Pernambuco rose steadily. To get a sense of how the aggregate street network has changed in Pernambuco, we can consider three of its most populous cities: Recife, Petrolina and Caruaru. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Recife rose steadily. The level of street-network sprawl in the aggregate network in Petrolina rose steadily. The level of street-network sprawl in the aggregate network in Caruaru followed a zig-zag trend with an overall increase.
To date, Pernambuco is the 11th-most disconnected out of the 29 regions in Brazil. Its position in the ranks since 1975 has fallen; relative to other regions in Brazil, the street network in Pernambuco has become more connected. Pernambuco ranked 10th in 1975, 11th in 1976-1990, 12th in 1991-2000 and 11th in 2001-2014.