Diankou in context: Street-network sprawl trends

Diankou in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
DiankouZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Diankou plotted against Zhejiang and China. The SNDi of new construction in Diankou followed a zig-zag trend with an overall decrease, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Diankou's incremental SNDi fell from 2.95 to 2.09 between 1991-2005 and 2006-2020. In terms of the aggregate network, Diankou ranked 32nd out of 116 cities in Zhejiang and 563rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.09
Rank in China
293rd of 1843
Rank in Zhejiang
12th of 116

Entire Network (Aggregate)

SNDi value
2.47
Rank in China
563rd of 1843
Rank in Zhejiang
32nd of 116

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
DiankouAl BaajGbadolite

In new street additions, Diankou and Al Baaj both fluctuated in its street-construction patterns, while Gbadolite built increasingly disconnected streets over time. For the full network, Diankou and Al Baaj both became progressively more connected, while Gbadolite became progressively more disconnected. Diankou and Al Baaj have been converging in their street-network character since 1975.