Yishui in context: Street-network sprawl trends

Yishui 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
YishuiShandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yishui plotted against Shandong and China. The SNDi of new construction in Yishui rose steadily, compared to Shandong which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yishui's incremental SNDi rose from 2.0 to 2.52 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yishui ranked 39th out of 124 cities in Shandong and 234th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.52
Rank in China
524th of 1843
Rank in Shandong
56th of 124

Entire Network (Aggregate)

SNDi value
2.01
Rank in China
234th of 1843
Rank in Shandong
39th of 124

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
YishuiDingzhouNovorossiysk

In new street additions, Yishui built increasingly disconnected streets over time, while Dingzhou fluctuated in its street-construction patterns and Novorossiysk built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend.