Huzhu in context: Street-network sprawl trends

Huzhu in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
HuzhuQinghai (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huzhu plotted against Qinghai and China. The SNDi of new construction in Huzhu 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, Huzhu's incremental SNDi fell from 2.19 to 1.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huzhu ranked 3rd out of 10 cities in Qinghai and 428th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.57
Rank in China
86th of 1843
Rank in Qinghai
2nd of 10

Entire Network (Aggregate)

SNDi value
2.3
Rank in China
428th of 1843
Rank in Qinghai
3rd of 10

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
HuzhuDinh QuanMinden

In new street additions, Huzhu built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Định Quán built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Minden built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Huzhu grew more disconnected from 1975 through 1976-1990, then improved, while Định Quán became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Minden became progressively more disconnected. Notably, Huzhu had a more sprawly network than Minden in 1975 but the two have since reversed their relative ranking.