Yongning in context: Street-network sprawl trends

Yongning in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
YongningNingxia Hui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yongning plotted against Ningxia Hui and China. The SNDi of new construction in Yongning peaked in 1976-1990, compared to Ningxia Hui which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yongning's incremental SNDi fell from 1.49 to 1.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yongning ranked 3rd out of 15 cities in Ningxia Hui and 50th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.34
Rank in China
42nd of 1843
Rank in Ningxia Hui
2nd of 15

Entire Network (Aggregate)

SNDi value
1.52
Rank in China
50th of 1843
Rank in Ningxia Hui
3rd of 15

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
YongningAl HusaydhiahBanankoro

In new street additions, Yongning and Banankoro both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Al Husaydhiah fluctuated in its street-construction patterns. For the full network, Yongning and Banankoro both grew more disconnected from 1975 through 1976-1990, then improved, while Al Husaydhiah fluctuated in connectivity. Yongning and Al Husaydhiah have been growing further apart in their street-network character since 1975.