Shangzhi in context: Street-network sprawl trends

Shangzhi 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
ShangzhiHeilongjiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Shangzhi plotted against Heilongjiang and China. The SNDi of new construction in Shangzhi peaked in 1976-1990, compared to Heilongjiang which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Shangzhi's incremental SNDi fell from 3.53 to 3.2 between 1991-2005 and 2006-2020. In terms of the aggregate network, Shangzhi ranked 40th out of 67 cities in Heilongjiang and 734th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.2
Rank in China
1003rd of 1843
Rank in Heilongjiang
37th of 67

Entire Network (Aggregate)

SNDi value
2.68
Rank in China
734th of 1843
Rank in Heilongjiang
40th of 67

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
ShangzhiCidade OcidentalGhardaia

In new street additions, Shangzhi built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Cidade Ocidental built increasingly disconnected streets over time and Ghardaia fluctuated in its street-construction patterns. For the full network, Shangzhi and Cidade Ocidental both became progressively more disconnected, while Ghardaia fluctuated in connectivity. Shangzhi and Cidade Ocidental have been converging in their street-network character since 1975.