Yushu in context: Street-network sprawl trends

Yushu in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yushu plotted against Qinghai and China. The SNDi of new construction in Yushu peaked in 1976-1990, compared to Qinghai which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Yushu's incremental SNDi fell from 2.39 to 1.92 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yushu ranked 5th out of 10 cities in Qinghai and 825th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.92
Rank in China
215th of 1843
Rank in Qinghai
4th of 10

Entire Network (Aggregate)

SNDi value
2.78
Rank in China
825th of 1843
Rank in Qinghai
5th of 10

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
YushuQa`tabahTaeryonggang

In new street additions, Yushu built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Qa`tabah built increasingly disconnected streets over time and Taeryonggang built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Qa`tabah and Taeryonggang both became progressively more disconnected, while Yushu grew more disconnected from 1975 through 1976-1990, then improved. Yushu and Qa`tabah have been growing further apart in their street-network character since 1975.