Quannan in context: Street-network sprawl trends
Quannan in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Quannan plotted against Jiangxi and China. The SNDi of new construction in Quannan peaked in 1976-1990, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Quannan's incremental SNDi fell from 2.71 to 2.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Quannan ranked 68th out of 82 cities in Jiangxi and 1416th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 2.62
- Rank in China
- 607th of 1843
- Rank in Jiangxi
- 28th of 82
Entire Network (Aggregate)
- SNDi value
- 3.59
- Rank in China
- 1416th of 1843
- Rank in Jiangxi
- 68th of 82
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Quannan and Yelwa both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Bekonang built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Yelwa and Bekonang both became progressively more disconnected, while Quannan grew more disconnected from 1975 through 1991-2005, then improved. Notably, Quannan had a more connected network than Yelwa in 1975 but the two have since reversed their relative ranking.