Yangyuan in context: Street-network sprawl trends

Yangyuan in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
YangyuanHebei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yangyuan plotted against Hebei and China. The SNDi of new construction in Yangyuan peaked in 1976-1990, compared to Hebei which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Yangyuan's incremental SNDi fell from 2.44 to 1.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yangyuan ranked 17th out of 120 cities in Hebei and 376th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.8
Rank in China
159th of 1843
Rank in Hebei
3rd of 120

Entire Network (Aggregate)

SNDi value
2.23
Rank in China
376th of 1843
Rank in Hebei
17th of 120

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
YangyuanNatitingouDaugavpils

In new street additions, Yangyuan built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Natitingou built increasingly disconnected streets over time and Daugavpils built increasingly connected streets over time. For the full network, Yangyuan grew more disconnected from 1975 through 1991-2005, then improved, while Natitingou became progressively more disconnected and Daugavpils became progressively more connected. Notably, Yangyuan had a more connected network than Daugavpils in 1975 but the two have since reversed their relative ranking.