Baiyin in context: Street-network sprawl trends

Baiyin in context

3.244.8<19751976–19901991–20052006–2020SNDi of street additions
3.244.8<19751976–19901991–20052006–2020SNDi of entire street network
BaiyinGansu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Baiyin plotted against Gansu and China. The SNDi of new construction in Baiyin peaked in 1976-1990, compared to Gansu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Baiyin's incremental SNDi fell from 2.8 to 2.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Baiyin ranked 6th out of 29 cities in Gansu and 1063rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.77
Rank in China
718th of 1843
Rank in Gansu
5th of 29

Entire Network (Aggregate)

SNDi value
3.04
Rank in China
1063rd of 1843
Rank in Gansu
6th of 29

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
BaiyinItajaiHyesan

In new street additions, Baiyin built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Itajaí fluctuated in its street-construction patterns and Hyesan built increasingly connected streets over time. For the full network, Baiyin and Hyesan both became progressively more connected, while Itajaí became progressively more disconnected. Baiyin and Itajaí have been growing further apart in their street-network character since 1975.