Xiaodong in context: Street-network sprawl trends

Xiaodong in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
XiaodongHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xiaodong plotted against Henan and China. The SNDi of new construction in Xiaodong rose steadily, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Xiaodong's incremental SNDi rose from 3.7 to 5.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xiaodong ranked 125th out of 129 cities in Henan and 1542nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.04
Rank in China
1641st of 1843
Rank in Henan
127th of 129

Entire Network (Aggregate)

SNDi value
3.98
Rank in China
1542nd of 1843
Rank in Henan
125th 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
XiaodongCandeiasAbyuha

While Candeias and Abyūhā both fluctuated in its street-construction patterns, Xiaodong built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Notably, Xiaodong had a more connected network than Candeias in 1975 but the two have since reversed their relative ranking.