Additional carbon sequestration benefits of grassland diversity restoration

Gerlinde B. De Deyn, Robert S. Shiel, Nick J. Ostle, Niall P. McNamara, Simon Oakley, Iain Young, Christopher Freeman, Nathalie Fenner, Helen Quirk, Richard D. Bardgett

    Research output: Contribution to journalArticlepeer-review

    119 Citations (Scopus)


    Summary 1. In Europe, grassland agriculture is one of the dominant land uses. A major aim of European agri-environment policy is the management of grassland for botanical diversity conservation and restoration, together with the delivery of ecosystem services including soil carbon (C) sequestration. 2. To test whether management for biodiversity restoration has additional benefits for soil C sequestration, we investigated C and nitrogen (N) accumulation rates in soil and C and N pools in vegetation in a long-term field experiment (16 years) in which fertilizer application and plant seeding were manipulated. In addition, the abundance of the legume Trifolium pratense was manipulated for the last 2 years. To unravel the mechanisms underlying changes in soil C and N pools, we also tested for effects of diversity restoration management on soil structure, ecosystem respiration and soil enzyme activities. 3. We show that the long-term biodiversity restoration practices increased soil C and N storage especially when these treatments were combined with the recent promotion of the legume Trifolium pratense, sequestering 317 g C and 35 g N m−2 year−1 in the most successful management treatment. These high rates of C and N accumulation were associated with reduced ecosystem respiration, increased soil organic matter content and improved soil structure. Cessation of fertilizer use, however, reduced the amount of C and N contained in vegetation. 4. Synthesis and applications. Our findings show that long-term diversity restoration practices can yield significant benefits for soil C storage when they are combined with increased abundance of a single, sub-ordinate legume species. Moreover, we show that these management practices deliver additional ecosystem benefits such as N storage in soil and improved soil structure.
    Original languageEnglish
    Pages (from-to)600-608
    Number of pages9
    JournalJournal of Applied Ecology
    Issue number3
    Early online date13 Dec 2010
    Publication statusPublished - Jun 2011


    • C:N ratio
    • SOC
    • Biodiversity
    • Carbon sequestration
    • Ecosystem functioning
    • Ecosystem respiration
    • Global change
    • Nitrogen sequestration
    • Soil enzymes
    • Soil structure


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