Yanghe in context: Street-network sprawl trends

Yanghe in context

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
YangheJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yanghe plotted against Jiangsu and China. The SNDi of new construction in Yanghe peaked in 1991-2005, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yanghe's incremental SNDi fell from 3.25 to 2.7 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yanghe ranked 47th out of 101 cities in Jiangsu and 792nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.7
Rank in China
659th of 1843
Rank in Jiangsu
46th of 101

Entire Network (Aggregate)

SNDi value
2.74
Rank in China
792nd of 1843
Rank in Jiangsu
47th of 101

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
YangheIsiroTongjiang County

In new street additions, Yanghe and Tongjiang County both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Isiro built increasingly disconnected streets over time. Looking at the full network, Isiro and Tongjiang County both became progressively more disconnected, while Yanghe grew more disconnected from 1975 through 1991-2005, then improved.