Songyuan in context: Street-network sprawl trends

Songyuan in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
SongyuanJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Songyuan plotted against Jilin and China. While Jilin and China both followed a zig-zag trend with an overall increase, Songyuan's new street additions followed a zig-zag trend with an overall increase. Most recently, Songyuan's incremental SNDi rose from 3.3 to 3.36 between 1991-2005 and 2006-2020. In terms of the aggregate network, Songyuan ranked 29th out of 47 cities in Jilin and 1152nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.36
Rank in China
1082nd of 1843
Rank in Jilin
26th of 47

Entire Network (Aggregate)

SNDi value
3.17
Rank in China
1152nd of 1843
Rank in Jilin
29th of 47

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
SongyuanChakanQena

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