Shanggao in context: Street-network sprawl trends

Shanggao in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
ShanggaoJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Shanggao plotted against Jiangxi and China. The SNDi of new construction in Shanggao peaked in 1976-1990, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Shanggao's incremental SNDi fell from 1.89 to 1.76 between 1991-2005 and 2006-2020. In terms of the aggregate network, Shanggao ranked 4th out of 82 cities in Jiangxi and 135th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.76
Rank in China
142nd of 1843
Rank in Jiangxi
8th of 82

Entire Network (Aggregate)

SNDi value
1.81
Rank in China
135th of 1843
Rank in Jiangxi
4th of 82

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

11.522.53<19751976–19901991–20052006–2020SNDi of street additions
11.522.53<19751976–19901991–20052006–2020SNDi of entire street network
ShanggaoRio GallegosBafra

In new street additions, Shanggao built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Río Gallegos fluctuated in its street-construction patterns and Bafra built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Shanggao grew more disconnected from 1975 through 1991-2005, then improved, while Río Gallegos fluctuated in connectivity and Bafra fluctuated in connectivity. Shanggao and Río Gallegos have been growing further apart in their street-network character since 1975.