Chishui in context: Street-network sprawl trends

Chishui in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
ChishuiGuizhou (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chishui plotted against Guizhou and China. The SNDi of new construction in Chishui was at its lowest in 1976-1990, compared to Guizhou which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Chishui's incremental SNDi rose from 2.82 to 3.48 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chishui ranked 19th out of 41 cities in Guizhou and 1043rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.48
Rank in China
1144th of 1843
Rank in Guizhou
23rd of 41

Entire Network (Aggregate)

SNDi value
3.02
Rank in China
1043rd of 1843
Rank in Guizhou
19th of 41

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
ChishuiTongyangKirikhan

In new street additions, Chishui built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Tongyang built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Kırıkhan fluctuated in its street-construction patterns. For the full network, Chishui became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Tongyang became progressively more connected and Kırıkhan became progressively more disconnected. Notably, Chishui had a more connected network than Tongyang in 1975 but the two have since reversed their relative ranking.