Dinghai District in context: Street-network sprawl trends

Dinghai District 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
Dinghai DistrictZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dinghai District plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Dinghai District's incremental SNDi rose from 1.78 to 2.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dinghai District ranked 9th out of 116 cities in Zhejiang and 219th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.37
Rank in China
434th of 1843
Rank in Zhejiang
26th of 116

Entire Network (Aggregate)

SNDi value
1.98
Rank in China
219th of 1843
Rank in Zhejiang
9th of 116

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
Dinghai DistrictJhenaidahAgailjhara

In new street additions, Dinghai District fluctuated in its street-construction patterns, while Jhenaidah built increasingly disconnected streets over time and Agailjhara built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Dinghai District fluctuated in connectivity, while Jhenaidah became progressively more disconnected and Agailjhara became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Dinghai District had a more sprawly network than Jhenaidah in 1975 but the two have since reversed their relative ranking.