Table 1 Breaking down a global soil–climate-mitigation strategy to regions.

From: Towards a global-scale soil climate mitigation strategy

Site

Yield gap (%)

C debt (t ha−1)

Soil group

Soil degradation

Recommended climate mitigation action

Expected change in economic revenue

Expected carbon sequestration

Living stone

84

3

Leptic Acrisol

Nutrient loss

None

++

Kasame

84

16

HaplicAcrisol

Nutrient loss

Liming + fertilization; conservation agriculture

++

++

Choma

75

22

Leptic Acrisol

Nutrient loss

Conservation agriculture and agroforestry

+

+++

  1. Examples from three sites in Zambia (data sources: www.yieldgap.org, and ref. 17 showing water-limited yield gap for maize and C-debt analyses.
  2. The number of plus/minus symbols illustrates possible success/failure for yield improvement and C sequestration when investing into soils, respectively.