Table 3 Cost distances between ancient cities and rivers from the late Yangshao to Xia and Shang Dynasties in the Central Plains region
Cost distance from rivers (m) | Ancient cities in the late Yangshao period | Ancient cities in the Longshan period | Ancient cities in Xia and Shang Dynasties | |||
|---|---|---|---|---|---|---|
Number | Percent | Number | Percent | Number | Percent | |
0–500 | 4 | 22.22 | 3 | 12.50 | 4 | 18.18 |
500–1000 | 1 | 5.56 | 3 | 12.50 | 4 | 18.18 |
1000–2000 | 6 | 33.33 | 7 | 29.17 | 4 | 18.18 |
2000–3000 | 2 | 11.11 | 4 | 16.67 | 1 | 4.55 |
3000–5000 | 2 | 11.11 | 3 | 12.50 | 4 | 18.18 |
> 5000 | 3 | 16.67 | 4 | 16.67 | 5 | 22.73 |
