Yongxing in context: Street-network sprawl trends

Yongxing in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
YongxingHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yongxing plotted against Hunan and China. The SNDi of new construction in Yongxing rose steadily, compared to Hunan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yongxing's incremental SNDi rose from 1.88 to 2.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yongxing ranked 6th out of 89 cities in Hunan and 222nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.88
Rank in China
800th of 1843
Rank in Hunan
45th of 89

Entire Network (Aggregate)

SNDi value
1.98
Rank in China
222nd of 1843
Rank in Hunan
6th of 89

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

What about similarly populated cities?

0.81.62.43.2<19751976–19901991–20052006–2020SNDi of street additions
0.81.62.43.2<19751976–19901991–20052006–2020SNDi of entire street network
YongxingBragancaNovovolynsk

While Bragança and Novovolynsk both fluctuated in its street-construction patterns, Yongxing built increasingly disconnected streets over time in new street additions. For the full network, Yongxing and Novovolynsk both became progressively more disconnected, while Bragança fluctuated in connectivity. Notably, Yongxing had a more connected network than Novovolynsk in 1975 but the two have since reversed their relative ranking.