Deqing in context: Street-network sprawl trends

Deqing in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
DeqingZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Deqing plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Deqing's incremental SNDi rose from 1.82 to 2.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Deqing ranked 8th out of 116 cities in Zhejiang as of 2020.

New Street Additions (2006–2020)

SNDi value
2.0
Rank in Zhejiang
8th of 116

Entire Network (Aggregate)

SNDi value
1.97
Rank in Zhejiang
8th of 116

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

What about similarly populated cities?

0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
DeqingYingshanWuchang

In new street additions, Deqing fluctuated in its street-construction patterns, while Yingshan fluctuated in its street-construction patterns and Wuchang built increasingly disconnected streets over time. For the full network, Deqing fluctuated in connectivity, while Yingshan fluctuated in connectivity and Wuchang became progressively more disconnected. Notably, Deqing had a more sprawly network than Wuchang in 1975 but the two have since reversed their relative ranking.