Nanhua in context: Street-network sprawl trends

Nanhua in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
NanhuaYunnan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nanhua plotted against Yunnan and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Nanhua's incremental SNDi rose from 4.23 to 4.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nanhua ranked 70th out of 78 cities in Yunnan and 1658th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.86
Rank in China
1609th of 1843
Rank in Yunnan
66th of 78

Entire Network (Aggregate)

SNDi value
4.5
Rank in China
1658th of 1843
Rank in Yunnan
70th of 78

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
NanhuaIsfaraApsheronsk

In new street additions, Nanhua fluctuated in its street-construction patterns, while Isfara built increasingly disconnected streets from 1975 through 1991-2005, then improved and Apsheronsk built increasingly disconnected streets over time. For the full network, Nanhua and Apsheronsk both became progressively more disconnected, while Isfara grew more disconnected from 1975 through 1991-2005, then improved. Notably, Nanhua had a more connected network than Isfara in 1975 but the two have since reversed their relative ranking.