Lin'an District in context: Street-network sprawl trends

Lin'an District 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
Lin'an DistrictZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lin'an District plotted against Zhejiang and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Lin'an District's incremental SNDi rose from 2.42 to 3.09 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lin'an District ranked 44th out of 116 cities in Zhejiang and 693rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.09
Rank in China
939th of 1843
Rank in Zhejiang
67th of 116

Entire Network (Aggregate)

SNDi value
2.64
Rank in China
693rd of 1843
Rank in Zhejiang
44th of 116

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

What about similarly populated cities?

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
Lin'an DistrictRuijinNis

In new street additions, Lin'an District and Ruijin both fluctuated in its street-construction patterns, while Niš built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Lin'an District and Niš both became progressively more disconnected, while Ruijin fluctuated in connectivity. Notably, Lin'an District had a more connected network than Ruijin in 1975 but the two have since reversed their relative ranking.