Table 4 Types of coupling coordination degree.

From: The coupling relationship and driving mechanism between ecological environment and high-quality economic development in the Middle Yellow River Basin

Type

Coupling coordination degree

Relative value

Lag type

Seriously unbalanced

0 ≤ D < 0.32

ESV—HQED > 0.1

Antagonistic (High-Quality Economic Development Lagging)

ESV—HQED < -0.1

Antagonistic (Ecological Environment Lagging)

-0.1 ≤ ESV—HQED ≤ 0.1

Low-Level harmony

Slightly unbalanced

0.32 ≤ D < 0.41

ESV—HQED > 0.1

Antagonistic (High-Quality Economic Development Lagging)

ESV—HQED < -0.1

Antagonistic (Ecological Environment Lagging)

-0.1 ≤ ESV—HQED ≤ 0.1

Low-Level harmony

Slightly balanced

0.41 ≤ D < 0.50

ESV—HQED > 0.1

Antagonistic (High-Quality Economic Development Lagging)

ESV—HQED < -0.1

Antagonistic (Ecological Environment Lagging)

-0.1 ≤ ESV—HQED ≤ 0.1

High-Level harmony

Moderately balanced

0.50 ≤ D < 1

ESV—HQED > 0.1

Antagonistic (High-Quality Economic Development Lagging)

ESV—HQED < -0.1

Antagonistic (Ecological Environment Lagging)

-0.1 ≤ ESV—HQED ≤ 0.1

High-Level harmony