Changning in context: Street-network sprawl trends

Changning in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
ChangningJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changning plotted against Jiangxi and China. The SNDi of new construction in Changning peaked in 1991-2005, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Changning's incremental SNDi fell from 2.39 to 0.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changning ranked 3rd out of 82 cities in Jiangxi as of 2020.

New Street Additions (2006–2020)

SNDi value
0.95
Rank in Jiangxi
1st of 82

Entire Network (Aggregate)

SNDi value
1.81
Rank in Jiangxi
3rd of 82

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
ChangningBarabaiKalol

In new street additions, Changning and Barabai both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Kalol fluctuated in its street-construction patterns. Looking at the full network, Barabai and Kalol both became progressively more disconnected, while Changning grew more disconnected from 1975 through 1991-2005, then improved.