Lukou in context: Street-network sprawl trends

Lukou in context

2.43.24<19751976–19901991–20052006–2020SNDi of street additions
2.43.24<19751976–19901991–20052006–2020SNDi of entire street network
LukouJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lukou plotted against Jiangsu and China. The SNDi of new construction in Lukou 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, Lukou's incremental SNDi fell from 4.01 to 3.48 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lukou ranked 83rd out of 101 cities in Jiangsu and 1414th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.48
Rank in China
1140th of 1843
Rank in Jiangsu
71st of 101

Entire Network (Aggregate)

SNDi value
3.59
Rank in China
1414th of 1843
Rank in Jiangsu
83rd of 101

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
LukouSaint-Jean-sur-RichelieuMogi Mirim

While Saint-Jean-sur-Richelieu and Mogi Mirim both built increasingly disconnected streets over time, Lukou built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, Saint-Jean-sur-Richelieu and Mogi Mirim both became progressively more disconnected, while Lukou grew more disconnected from 1975 through 1991-2005, then improved. Notably, Lukou had a more connected network than Saint-Jean-sur-Richelieu in 1975 but the two have since reversed their relative ranking.