Dongming in context: Street-network sprawl trends

Dongming in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
DongmingShandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dongming plotted against Shandong and China. While Shandong and China both followed a zig-zag trend with an overall increase, Dongming's new street additions followed a zig-zag trend with an overall increase. Most recently, Dongming's incremental SNDi rose from 1.3 to 1.49 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dongming ranked 7th out of 124 cities in Shandong and 30th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.49
Rank in China
62nd of 1843
Rank in Shandong
9th of 124

Entire Network (Aggregate)

SNDi value
1.41
Rank in China
30th of 1843
Rank in Shandong
7th of 124

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
DongmingAkleraYalta

While Aklera and Yalta both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Dongming fluctuated in its street-construction patterns in new street additions. Looking at the full network, Aklera and Yalta both became progressively more disconnected, while Dongming fluctuated in connectivity. Notably, Dongming had a more sprawly network than Aklera in 1975 but the two have since reversed their relative ranking.