Ninghai County in context: Street-network sprawl trends

Ninghai County 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
Ninghai CountyZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ninghai County plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Ninghai County's incremental SNDi rose from 1.83 to 2.32 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ninghai County ranked 10th out of 116 cities in Zhejiang and 221st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.32
Rank in China
403rd of 1843
Rank in Zhejiang
22nd of 116

Entire Network (Aggregate)

SNDi value
1.98
Rank in China
221st of 1843
Rank in Zhejiang
10th of 116

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
Ninghai CountyMit HabibKombolcha

While Mit Habib and Kombolcha both built increasingly disconnected streets over time, Ninghai County fluctuated in its street-construction patterns in new street additions. For the full street network, though, all three cities follow the same trend. Ninghai County and Kombolcha have been growing further apart in their street-network character since 1975.