Datun in context: Street-network sprawl trends

Datun in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
DatunJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Datun plotted against Jiangsu and China. While Jiangsu and China both followed a zig-zag trend with an overall increase, Datun's new street additions followed a zig-zag trend with an overall increase. Most recently, Datun's incremental SNDi rose from 2.17 to 4.16 between 1991-2005 and 2006-2020. In terms of the aggregate network, Datun ranked 68th out of 101 cities in Jiangsu and 1154th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.16
Rank in China
1455th of 1843
Rank in Jiangsu
88th of 101

Entire Network (Aggregate)

SNDi value
3.17
Rank in China
1154th of 1843
Rank in Jiangsu
68th of 101

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
DatunEkejeSafur

In new street additions, Datun and Ekeje both fluctuated in its street-construction patterns, while Safur built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Ekeje and Safur both became progressively more disconnected, while Datun fluctuated in connectivity. Datun and Ekeje have been growing further apart in their street-network character since 1975.