Kaifeng in context: Street-network sprawl trends

Kaifeng in context

2.533.544.5<19751976–19901991–20052006–2020SNDi of street additions
2.533.544.5<19751976–19901991–20052006–2020SNDi of entire street network
KaifengHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kaifeng plotted against Henan and China. While Henan and China both followed a zig-zag trend with an overall increase, Kaifeng's new street additions followed a zig-zag trend with an overall increase. Most recently, Kaifeng's incremental SNDi rose from 2.81 to 4.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kaifeng ranked 100th out of 129 cities in Henan and 1052nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.47
Rank in China
1528th of 1843
Rank in Henan
122nd of 129

Entire Network (Aggregate)

SNDi value
3.03
Rank in China
1052nd of 1843
Rank in Henan
100th of 129

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

What about similarly populated cities?

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
KaifengMendozaOmsk

While Mendoza and Omsk both built increasingly disconnected streets over time, Kaifeng fluctuated in its street-construction patterns in new street additions. Looking at the full network, Mendoza and Omsk both became progressively more disconnected, while Kaifeng fluctuated in connectivity. Kaifeng and Omsk have been converging in their street-network character since 1975.