Summary
This five-year field study examined how vegetation restoration patterns influence microbial metabolic status within soil aggregates of abandoned tailings. Using ecoenzymatic stoichiometry modelling, the authors found that diversified vegetation cover mitigates microbial colimitation of carbon and phosphorus—particularly in microaggregates—whereas monotypic vegetation exacerbates this limitation. The findings suggest that soil nutrient stoichiometric ratios established through strategic revegetation with diverse plant communities can enhance soil microbial function and ecosystem resilience in heavily degraded landscapes.
UK applicability
The principles of vegetation-driven remediation of degraded soils may be applicable to UK brownfield sites, mine tailings, and restored industrial landscapes, particularly where ecological restoration is prioritised. However, the study's geographic origin and local soil conditions are not specified in the abstract, so direct transferability to UK climate, soil types, and native plant communities remains uncertain without additional information.
Key measures
Carbon and nitrogen concentrations in soil aggregates; phosphorus-acquiring and carbon-acquiring extracellular enzyme activities; microbial biomass and stoichiometry; vector model of ecoenzymatic stoichiometry; soil aggregate fractionation (macroaggregates >0.25 mm and microaggregates <0.25 mm)
Outcomes reported
The study measured soil microbial metabolic status, enzyme activity, and nutrient stoichiometry within soil aggregates across differently vegetated and bare tailings plots over five years. Results showed that diversified vegetation cover reduced microbial colimitation of carbon and phosphorus, particularly in microaggregates, whereas monotypic vegetation exacerbated this limitation.
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