An Giang: region in Vietnam
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 An Giang, Vietnam on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in An Giang as of 2014, the overall level of street-network sprawl is 2.89, 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 1.61, 2.67, 4.04 and 2.92. Street construction in An Giang increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in An Giang spans a total of 3797 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 2.67, 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 1.61, 2.42, 2.9 and 2.89. The aggregate street network in An Giang increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in An Giang peaked in 1991-2000. To get a sense of how street development has changed in An Giang, we can consider three of its most populous cities: Long Xuyen, Hong Ngu and Tân Châu. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Long Xuyen rose steadily. The level of street-network sprawl in new development in Hong Ngu peaked in 1976-1990. The level of street-network sprawl in new development in Tân Châu followed a zig-zag trend with an overall increase.
How do development practices in An Giang fare in comparison to others in Vietnam? Most recently in 2001-2014, street construction in An Giang was the 47th-most disconnected out of the 59 regions in Vietnam. Its position in the ranks since 1975 has fallen; relative to other regions in Vietnam, street construction in An Giang has become more connected. An Giang ranked 42nd in 1975, 36th in 1976-1990, 16th in 1991-2000 and 47th in 2001-2014.
As of 2014, the city with the most disconnected street network in An Giang is Long Xuyen with an SNDi of 3.09, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Núi Sập with an SNDi of 0.56, which is relatively well-connected. See trends for these cities: Núi Sập, Long Xuyen
The level of street-network sprawl in the aggregate network in An Giang peaked in 1991-2000. To get a sense of how the aggregate street network has changed in An Giang, we can consider three of its most populous cities: Long Xuyen, Hong Ngu and Tân Châu. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Long Xuyen rose steadily. The level of street-network sprawl in the aggregate network in Hong Ngu peaked in 1976-1990. The level of street-network sprawl in the aggregate network in Tân Châu followed a zig-zag trend with an overall increase.
To date, An Giang is the 42nd-most disconnected out of the 59 regions in Vietnam. Its position in the ranks since 1975 has not changed. An Giang ranked 42nd in 1975, 38th in 1976-1990, 30th in 1991-2000 and 42nd in 2001-2014.