Yangjiang in context: Street-network sprawl trends

Yangjiang 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
YangjiangGuangdong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yangjiang plotted against Guangdong and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Yangjiang's incremental SNDi rose from 2.01 to 2.64 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yangjiang ranked 25th out of 133 cities in Guangdong and 496th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.64
Rank in China
617th of 1843
Rank in Guangdong
20th of 133

Entire Network (Aggregate)

SNDi value
2.38
Rank in China
496th of 1843
Rank in Guangdong
25th of 133

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

What about similarly populated cities?

1.622.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
YangjiangZahedanGaomi

In new street additions, Yangjiang and Gaomi both fluctuated in its street-construction patterns, while Zahedan built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Yangjiang fluctuated in connectivity, while Zahedan became progressively more connected and Gaomi became progressively more disconnected. Yangjiang and Zahedan have been growing further apart in their street-network character since 1975.