胶南 in context: Street-network sprawl trends

Xiao Nan in context

2.43.24<19751976–19901991–20052006–2020SNDi of street additions
2.43.24<19751976–19901991–20052006–2020SNDi of entire street network
Xiao Nan Shandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with 胶南 plotted against Shandong and China. While Shandong and China both followed a zig-zag trend with an overall increase, 胶南's new street additions followed a zig-zag trend with an overall increase. Most recently, 胶南's incremental SNDi rose from 1.96 to 2.56 between 1991-2005 and 2006-2020. In terms of the aggregate network, 胶南 ranked 60th out of 124 cities in Shandong and 399th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.56
Rank in China
559th of 1843
Rank in Shandong
60th of 124

Entire Network (Aggregate)

SNDi value
2.26
Rank in China
399th of 1843
Rank in Shandong
60th of 124

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
Xiao Nan JacksonvilleLiyang

In new street additions, 胶南 fluctuated in its street-construction patterns, while Jacksonville built increasingly disconnected streets over time and Liyang built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, 胶南 fluctuated in connectivity, while Jacksonville became progressively more disconnected and Liyang grew more disconnected from 1975 through 1991-2005, then improved. 胶南 and Jacksonville have been growing further apart in their street-network character since 1975.