Table 2 The NNI of Different Types of CNIAHS

From: Spatio-temporal pattern and entropy variation of agricultural heritage in China

No

Classification of CNIAHS

Total

NNI

Z Score

P value

Type of spatial distribution

1

High-value crop and spice systems

68

0.84

-2.58

0.009

Clustered

2

Multiple cropping/polyculture farming systems

24

0.85

-1.37

0.17

Random

3

Food crop system

24

0.96

-0.36

0.72

Random

5

Forestry system

15

1.35

2.61

0.01

Dispersed

4

Understory farming systems

12

1.27

1.77

0.08

Dispersed

6

Nomadic and semi-nomadic pastoral systems

12

1.18

1.22

0.22

Random

7

Below sea level systems

11

1.95

6.04

0

Dispersed

8

Animal husbandry system

8

1.58

3.13

0.001

Dispersed

10

Mountain rice terrace agroeco systems

7

1.67

3.37

0

Dispersed

9

Ancient irrigation, soil and water management systems

6

1.91

3.9

0

Dispersed

11

Complex multi-layered home gardens

1

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