Haidong in context: Street-network sprawl trends

Haidong in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
HaidongQinghai (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Haidong plotted against Qinghai and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Haidong's incremental SNDi rose from 2.59 to 2.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Haidong ranked 6th out of 10 cities in Qinghai and 879th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.77
Rank in China
719th of 1843
Rank in Qinghai
5th of 10

Entire Network (Aggregate)

SNDi value
2.83
Rank in China
879th of 1843
Rank in Qinghai
6th of 10

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
HaidongPovoa de VarzimKhistevarz

While Póvoa de Varzim and Khistevarz both built increasingly disconnected streets over time, Haidong fluctuated in its street-construction patterns in new street additions. Looking at the full network, Póvoa de Varzim and Khistevarz both became progressively more disconnected, while Haidong grew more disconnected from 1975 through 1976-1990, then improved. Haidong and Póvoa de Varzim have been converging in their street-network character since 1975.