Summary
This study tracked changes in carbon-related soil processes over 21 years of grazing exclusion in a degraded Brazilian dryland, using these processes as biomarkers of soil health recovery. The work suggests that removing livestock pressure allows measurable restoration of soil microbial and biochemical function, as indicated by shifts in carbon cycling indicators. As suggested by the title, the findings position carbon-related measures as practical, quantifiable proxies for monitoring long-term land restoration success in semi-arid systems.
UK applicability
Whilst conducted in a tropical dryland context, the methodological approach of using carbon cycling indicators to monitor soil recovery is transferable to upland UK grazing systems, particularly those under extensification or rewilding programmes. The timescale (21 years) highlights the long-term commitment required for measurable soil health recovery, relevant to UK peatland and grassland restoration initiatives.
Key measures
Soil organic carbon, microbial biomass carbon, enzyme activities (presumed carbon-cycling enzymes), soil respiration, potentially dissolved organic carbon and other biogeochemical pools related to carbon dynamics
Outcomes reported
The study evaluated carbon-related soil processes as indicators of soil health recovery in a degraded dryland ecosystem after 21 years of grazing exclusion. Multiple soil biological, chemical, and biochemical metrics were assessed to characterise restoration trajectories.
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