Zhaotun in context: Street-network sprawl trends

Zhaotun in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
ZhaotunAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zhaotun plotted against Anhui and China. The SNDi of new construction in Zhaotun peaked in 1991-2005, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Zhaotun's incremental SNDi fell from 3.92 to 3.49 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zhaotun ranked 53rd out of 74 cities in Anhui and 1067th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.49
Rank in China
1147th of 1843
Rank in Anhui
58th of 74

Entire Network (Aggregate)

SNDi value
3.05
Rank in China
1067th of 1843
Rank in Anhui
53rd of 74

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
ZhaotunSalzburgTiraspol

In new street additions, Zhaotun and Salzburg both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Tiraspol built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Zhaotun and Salzburg have been growing further apart in their street-network character since 1975.