Xiamen City in context: Street-network sprawl trends

Xiamen City in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
Xiamen CityFujian (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xiamen City plotted against Fujian and China. The SNDi of new construction in Xiamen City rose steadily, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Xiamen City's incremental SNDi rose from 3.11 to 3.16 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xiamen City ranked 32nd out of 75 cities in Fujian and 1050th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.16
Rank in China
975th of 1843
Rank in Fujian
26th of 75

Entire Network (Aggregate)

SNDi value
3.03
Rank in China
1050th of 1843
Rank in Fujian
32nd of 75

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

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
Xiamen CityMalangCotonou

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