Table 5 Growth rate and threshold of independent variable in each scenario.

From: Carbon neutral spatial zoning and optimization based on land use carbon emission in the qinba mountain region, China

Scenario

Time period

P

W

IS

TI

UR

CEI

Growth gate

Growth gate

Threshold

Growth gate

Threshold

Growth gate

Low-carbon

2020–2030

Min Δ

Min Δ

≤ Min Δ

Max Δ

≤ 65%

Min Δ

2030–2060

−Max Δ × (1 + 0.2)

Min Δ × (1 + 0.1)

≤ Min Δ − 5%

Max Δ × (1 + 0.2)

≤ 70%

Min Δ – 1%

Baseline

2020–2030

Δ

Δ

Δ

Δ

≤ 70%

Δ

2030–2060

Δ × (1 + 0.2)

Δ × (1 + 0.15)

Δ

Δ × (1 + 0.15)

≤ 75%

Δ

High-carbon

2020–2030

Max Δ

Max Δ

≤ Max Δ

Min Δ

≤ 75%

Max Δ

2030–2060

−Min Δ × (1 − 0.2)

Max Δ × (1 + 0.2)

≤ Max Δ + 5%

Min Δ × (1 + 0.1)

≤ 80%

Max Δ + 1%

  1. Note: is the average annual growth rate or annual threshold.