Qian'an in context: Street-network sprawl trends

Qian'an in context

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
Qian'anJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qian'an plotted against Jilin and China. While Jilin and China both followed a zig-zag trend with an overall increase, Qian'an's new street additions followed a zig-zag trend with an overall increase. Most recently, Qian'an's incremental SNDi rose from 3.75 to 3.98 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qian'an ranked 16th out of 47 cities in Jilin and 531st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.98
Rank in China
1389th of 1843
Rank in Jilin
31st of 47

Entire Network (Aggregate)

SNDi value
2.43
Rank in China
531st of 1843
Rank in Jilin
16th of 47

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
Qian'anGolbasiBandar Armada Putra

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