Pingtan in context: Street-network sprawl trends

Pingtan 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
PingtanFujian (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pingtan plotted against Fujian and China. The SNDi of new construction in Pingtan peaked in 1976-1990, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Pingtan's incremental SNDi fell from 3.22 to 3.02 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pingtan ranked 37th out of 75 cities in Fujian and 1163rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.02
Rank in China
893rd of 1843
Rank in Fujian
21st of 75

Entire Network (Aggregate)

SNDi value
3.18
Rank in China
1163rd of 1843
Rank in Fujian
37th of 75

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
PingtanFukayaSalihli

In new street additions, Pingtan built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Fukaya fluctuated in its street-construction patterns and Salihli fluctuated in its street-construction patterns. For the full network, Pingtan grew more disconnected from 1975 through 1976-1990, then improved, while Fukaya fluctuated in connectivity and Salihli became progressively more disconnected.