Yinchuan in context: Street-network sprawl trends

Yinchuan in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yinchuan plotted against Ningxia Hui and China. The SNDi of new construction in Yinchuan rose steadily, compared to Ningxia Hui which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yinchuan's incremental SNDi rose from 2.88 to 3.42 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yinchuan ranked 13th out of 15 cities in Ningxia Hui and 871st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.42
Rank in China
1118th of 1843
Rank in Ningxia Hui
13th of 15

Entire Network (Aggregate)

SNDi value
2.82
Rank in China
871st of 1843
Rank in Ningxia Hui
13th of 15

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
YinchuanDaejeonEl Mansura

In new street additions, Yinchuan and El Mansura both built increasingly disconnected streets over time, while Daejeon fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Yinchuan and Daejeon have been growing further apart in their street-network character since 1975.