Pujiang in context: Street-network sprawl trends

Pujiang 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
PujiangZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pujiang plotted against Zhejiang and China. The SNDi of new construction in Pujiang peaked in 1976-1990, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Pujiang's incremental SNDi fell from 2.48 to 2.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pujiang ranked 31st out of 116 cities in Zhejiang as of 2020.

New Street Additions (2006–2020)

SNDi value
2.47
Rank in Zhejiang
32nd of 116

Entire Network (Aggregate)

SNDi value
2.46
Rank in Zhejiang
31st of 116

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
PujiangJaingbianNagapattinam

In new street additions, Pujiang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Jaingbian built increasingly disconnected streets from 1975 through 1991-2005, then improved and Nagapattinam fluctuated in its street-construction patterns. For the full network, Pujiang became progressively more disconnected, while Jaingbian grew more disconnected from 1975 through 1991-2005, then improved and Nagapattinam fluctuated in connectivity. Pujiang and Jaingbian have been converging in their street-network character since 1975.