Shangqiu in context: Street-network sprawl trends

Shangqiu 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
ShangqiuHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Shangqiu plotted against Henan and China. The SNDi of new construction in Shangqiu rose steadily, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Shangqiu's incremental SNDi rose from 2.34 to 2.56 between 1991-2005 and 2006-2020. In terms of the aggregate network, Shangqiu ranked 54th out of 129 cities in Henan and 401st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.56
Rank in China
560th of 1843
Rank in Henan
70th of 129

Entire Network (Aggregate)

SNDi value
2.26
Rank in China
401st of 1843
Rank in Henan
54th of 129

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
ShangqiuPorto-NovoKota Kinabalu

Shangqiu, Porto-Novo, and Kota Kinabalu all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network.