Yongcheng in context: Street-network sprawl trends

Yongcheng in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
YongchengHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yongcheng plotted against Henan and China. While Henan and China both followed a zig-zag trend with an overall increase, Yongcheng's new street additions followed a zig-zag trend with an overall decrease. Most recently, Yongcheng's incremental SNDi rose from 2.24 to 2.26 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yongcheng ranked 60th out of 129 cities in Henan and 469th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.26
Rank in China
375th of 1843
Rank in Henan
54th of 129

Entire Network (Aggregate)

SNDi value
2.34
Rank in China
469th of 1843
Rank in Henan
60th of 129

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

What about similarly populated cities?

22.533.54<19751976–19901991–20052006–2020SNDi of street additions
22.533.54<19751976–19901991–20052006–2020SNDi of entire street network
YongchengNaganoChaohu

Yongcheng, Nagano, and Chaohu all fluctuated in its street-construction patterns in new street construction. For the full network, Yongcheng and Chaohu both grew more disconnected from 1975 through 1976-1990, then improved, while Nagano became progressively more disconnected.