Qinzhou in context: Street-network sprawl trends

Qinzhou in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
QinzhouGuangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qinzhou plotted against Guangxi and China. The SNDi of new construction in Qinzhou peaked in 1976-1990, compared to Guangxi which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Qinzhou's incremental SNDi fell from 3.52 to 3.32 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qinzhou ranked 42nd out of 63 cities in Guangxi and 1303rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.32
Rank in China
1057th of 1843
Rank in Guangxi
29th of 63

Entire Network (Aggregate)

SNDi value
3.39
Rank in China
1303rd of 1843
Rank in Guangxi
42nd of 63

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
QinzhouSanta MariaMandya

In new street additions, Qinzhou built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Santa Maria fluctuated in its street-construction patterns and Mandya built increasingly disconnected streets over time. Looking at the full network, Santa Maria and Mandya both became progressively more disconnected, while Qinzhou grew more disconnected from 1975 through 1991-2005, then improved.