Xikou in context: Street-network sprawl trends

Xikou 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
XikouZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xikou plotted against Zhejiang and China. The SNDi of new construction in Xikou rose steadily, 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, Xikou's incremental SNDi rose from 2.18 to 2.99 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xikou ranked 27th out of 116 cities in Zhejiang and 479th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.99
Rank in China
877th of 1843
Rank in Zhejiang
61st of 116

Entire Network (Aggregate)

SNDi value
2.36
Rank in China
479th of 1843
Rank in Zhejiang
27th of 116

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

What about similarly populated cities?

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
XikouValle de SantiagoLajeado

While Valle de Santiago and Lajeado both fluctuated in its street-construction patterns, Xikou built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Notably, Xikou had a more connected network than Valle de Santiago in 1975 but the two have since reversed their relative ranking.