Jiyuan in context: Street-network sprawl trends

Jiyuan 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
JiyuanHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jiyuan plotted against Henan and China. The SNDi of new construction in Jiyuan peaked in 1991-2005, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Jiyuan's incremental SNDi fell from 2.25 to 2.21 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiyuan ranked 43rd out of 129 cities in Henan and 283rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.21
Rank in China
340th of 1843
Rank in Henan
48th of 129

Entire Network (Aggregate)

SNDi value
2.11
Rank in China
283rd of 1843
Rank in Henan
43rd of 129

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
JiyuanQarchakBauru

While Qarchak and Bauru both fluctuated in its street-construction patterns, Jiyuan built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full street network, though, all three cities follow the same trend. Jiyuan and Bauru have been converging in their street-network character since 1975.