Zhelin in context: Street-network sprawl trends

Zhelin in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
ZhelinShanghai (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zhelin plotted against Shanghai and China. The SNDi of new construction in Zhelin rose steadily, compared to Shanghai which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Zhelin's incremental SNDi rose from 3.76 to 3.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zhelin ranked 7th out of 11 cities in Shanghai and 1450th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.77
Rank in China
1299th of 1843
Rank in Shanghai
5th of 11

Entire Network (Aggregate)

SNDi value
3.66
Rank in China
1450th of 1843
Rank in Shanghai
7th of 11

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ZhelinChamberyShikarpur

In new street additions, Zhelin built increasingly disconnected streets over time, while Chambéry built increasingly disconnected streets from 1975 through 1976-1990, then improved and Shikarpur built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Zhelin and Chambéry have been growing further apart in their street-network character since 1975.