Table 3 The classification of the degree of coupling and coordination (DCC)

From: Coupled and coordinated development of water-energy-food-ecology-land system in the Yangtze River Delta, China

DCC Interval

DCC grade

DCC level

[0, 0.1)

1

Extreme imbalance

[0.1, 0.2)

2

Severe imbalance

[0.2, 0.3)

3

Moderate imbalance

[0.3, 0.4)

4

Mild imbalance

[0.4, 0.5)

5

Near imbalance

[0.5, 0.6)

6

Barely coupling coordination

[0.6, 0.7)

7

Primary coupling coordination

[0.7, 0.8)

8

Intermediate coupling coordination

[0.8, 0.9)

9

Good coupling coordination

[0.9, 1]

10

High-quality coupling coordination