Changfeng in context: Street-network sprawl trends

Changfeng in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
ChangfengAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changfeng plotted against Anhui and China. The SNDi of new construction in Changfeng peaked in 1976-1990, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Changfeng's incremental SNDi fell from 4.07 to 3.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changfeng ranked 69th out of 74 cities in Anhui and 1647th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.4
Rank in China
1107th of 1843
Rank in Anhui
55th of 74

Entire Network (Aggregate)

SNDi value
4.45
Rank in China
1647th of 1843
Rank in Anhui
69th of 74

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

What about similarly populated cities?

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
ChangfengAkcaabatPuerto Ayacucho

In new street additions, Changfeng built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Akçaabat fluctuated in its street-construction patterns and Puerto Ayacucho built increasingly disconnected streets over time. For the full network, Changfeng grew more disconnected from 1975 through 1976-1990, then improved, while Akçaabat fluctuated in connectivity and Puerto Ayacucho became progressively more disconnected. Changfeng and Akçaabat have been converging in their street-network character since 1975.