Nanxun in context: Street-network sprawl trends

Nanxun in context

33.544.55<19751976–19901991–20052006–2020SNDi of street additions
33.544.55<19751976–19901991–20052006–2020SNDi of entire street network
NanxunZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nanxun plotted against Zhejiang and China. The SNDi of new construction in Nanxun peaked in 1976-1990, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Nanxun's incremental SNDi fell from 4.09 to 3.78 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nanxun ranked 92nd out of 116 cities in Zhejiang and 1543rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.78
Rank in China
1300th of 1843
Rank in Zhejiang
82nd of 116

Entire Network (Aggregate)

SNDi value
3.98
Rank in China
1543rd of 1843
Rank in Zhejiang
92nd of 116

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
NanxunShuanglongHartford

In new street additions, Nanxun and Hartford both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Shuanglong built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Nanxun grew more disconnected from 1975 through 1976-1990, then improved, while Shuanglong became progressively more connected and Hartford became progressively more disconnected. Nanxun and Shuanglong have been converging in their street-network character since 1975.