Yongxin County in context: Street-network sprawl trends

Yongxin County in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
Yongxin CountyJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yongxin County plotted against Jiangxi and China. While Jiangxi and China both followed a zig-zag trend with an overall increase, Yongxin County's new street additions followed a zig-zag trend with an overall decrease. Most recently, Yongxin County's incremental SNDi rose from 1.45 to 1.82 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yongxin County ranked 2nd out of 82 cities in Jiangxi and 129th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.82
Rank in China
168th of 1843
Rank in Jiangxi
9th of 82

Entire Network (Aggregate)

SNDi value
1.8
Rank in China
129th of 1843
Rank in Jiangxi
2nd of 82

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
Yongxin CountyAlphen aan den RijnHumayupur

In new street additions, Yongxin County fluctuated in its street-construction patterns, while Alphen aan den Rijn built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Humayupur built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Yongxin County fluctuated in connectivity, while Alphen aan den Rijn became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Humayupur became progressively more disconnected. Yongxin County and Alphen aan den Rijn have been converging in their street-network character since 1975.