Luoning County in context: Street-network sprawl trends

Luoning County in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
Luoning CountyHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Luoning County plotted against Henan and China. The SNDi of new construction in Luoning County peaked in 1991-2005, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Luoning County's incremental SNDi fell from 3.52 to 2.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Luoning County ranked 96th out of 129 cities in Henan and 1013th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.84
Rank in China
766th of 1843
Rank in Henan
87th of 129

Entire Network (Aggregate)

SNDi value
2.98
Rank in China
1013th of 1843
Rank in Henan
96th of 129

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

What about similarly populated cities?

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
Luoning CountyHuoqiuNassarawa

While Huoqiu and Nassarawa both fluctuated in its street-construction patterns, Luoning County built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, Huoqiu and Nassarawa both became progressively more disconnected, while Luoning County grew more disconnected from 1975 through 1991-2005, then improved. Notably, Luoning County had a more connected network than Huoqiu in 1975 but the two have since reversed their relative ranking.