Qiyang in context: Street-network sprawl trends

Qiyang in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
QiyangHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qiyang plotted against Hunan and China. While Hunan and China both followed a zig-zag trend with an overall increase, Qiyang's new street additions followed a zig-zag trend with an overall increase. Most recently, Qiyang's incremental SNDi rose from 2.31 to 2.69 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qiyang ranked 19th out of 89 cities in Hunan and 478th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.69
Rank in China
648th of 1843
Rank in Hunan
38th of 89

Entire Network (Aggregate)

SNDi value
2.35
Rank in China
478th of 1843
Rank in Hunan
19th of 89

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
QiyangKolar Gold FieldsBaniachong

In new street additions, Qiyang and Baniachong both fluctuated in its street-construction patterns, while Kolar Gold Fields built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Qiyang became progressively more disconnected, while Kolar Gold Fields became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Baniachong fluctuated in connectivity. Qiyang and Kolar Gold Fields have been converging in their street-network character since 1975.