Yongkang in context: Street-network sprawl trends

Yongkang in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yongkang plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Yongkang's incremental SNDi rose from 2.03 to 2.2 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yongkang ranked 13th out of 116 cities in Zhejiang and 259th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.2
Rank in China
336th of 1843
Rank in Zhejiang
18th of 116

Entire Network (Aggregate)

SNDi value
2.06
Rank in China
259th of 1843
Rank in Zhejiang
13th of 116

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
YongkangHat YaiGuang'an

In new street additions, Yongkang and Guang'an both fluctuated in its street-construction patterns, while Hat Yai built increasingly disconnected streets over time. For the full network, Yongkang and Hat Yai both became progressively more disconnected, while Guang'an fluctuated in connectivity. Yongkang and Hat Yai have been growing further apart in their street-network character since 1975.