Luquan in context: Street-network sprawl trends

Luquan 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
LuquanYunnan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Luquan plotted against Yunnan and China. The SNDi of new construction in Luquan was at its lowest in 1976-1990, compared to Yunnan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Luquan's incremental SNDi rose from 2.18 to 2.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Luquan ranked 21st out of 78 cities in Yunnan and 574th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.88
Rank in China
799th of 1843
Rank in Yunnan
32nd of 78

Entire Network (Aggregate)

SNDi value
2.49
Rank in China
574th of 1843
Rank in Yunnan
21st of 78

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
LuquanSao Sebastiao do ParaisoBagalkote

While São Sebastião do Paraíso and Bagalkote both built increasingly disconnected streets over time, Luquan built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, São Sebastião do Paraíso and Bagalkote both became progressively more disconnected, while Luquan became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Luquan had a more sprawly network than Bagalkote in 1975 but the two have since reversed their relative ranking.