Table 1 The NNI of CNIAHS in Different Stages
From: Spatio-temporal pattern and entropy variation of agricultural heritage in China
The stage of CNIAHS | Quantity | NNI | Z Score | P value | Type of spatial distribution |
|---|---|---|---|---|---|
Paleolithic Age and Neolithic Age | 17 | 1.19 | 1.53 | 0.126 | Random |
Xia, Shang and Zhou Dynasties | 15 | 1.13 | 0.97 | 0.33 | Random |
Spring and Autumn Period and Warring States Period | 9 | 1.43 | 2.3 | 0.21 | Dispersed |
Qin and Han to the Southern and Northern Dynasties | 53 | 0.66 | − 4.79 | 0 | Clustered |
Sui, Tang, Song and Yuan Dynasties | 59 | 0.91 | − 1.37 | 0.17 | Clustered |
Ming and Qing Dynasties | 35 | 1.08 | 0.96 | 0.33 | Random |
All CNIAHS | 188 | 0.37 | − 16.49 | 0 | Clustered |
