Qixian in context: Street-network sprawl trends

Qixian 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
QixianHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qixian plotted against Henan and China. The SNDi of new construction in Qixian peaked in 1976-1990, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Qixian's incremental SNDi fell from 3.51 to 3.22 between 1991-2005 and 2006-2020.

New Street Additions (2006–2020)

SNDi value
3.22

Entire Network (Aggregate)

SNDi value
3.02

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
QixianBanja LukaSonagar

In new street additions, Qixian built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Banja Luka built increasingly disconnected streets over time and Sonagar built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Qixian and Banja Luka both became progressively more disconnected, while Sonagar became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.