Abstract
AbstractThe conversion of lowland heathland to agricultural land in Europe significantly depleted soil carbon stocks. Restoring heathlands has been proposed as a mechanism to sequester soil carbon. Here we compared soil carbon in (i) agricultural pasture; (ii) native heathland and (iii) restored heathland through acidification with elemental sulfur (sulphur). After 18 years of soil acidification, soil chemical properties (pH, extractable nutrients etc.), fauna and vegetation assemblage resembled that of native heathlands. However, native heathland was found to contain more than double the soil carbon stock of restored heath, with significantly higher contents of stable soil organic matter, and restored heath soil carbon was not significantly different to the control pasture. This result, combined with supporting findings of a comprehensive literature review, has ramifications for carbon-sequestration proposals, given the urgency required for climate mitigation tools.
Publisher
Springer Science and Business Media LLC
Subject
General Earth and Planetary Sciences,General Environmental Science
Reference71 articles.
1. JNCC. Common Standards Monitoring Guidance for Lowland Heathland (Joint Nature Conservation Committee (JNCC), 2008).
2. Gregg, R. et al. Carbon storage and sequestration by habitat: a review of the evidence (second edition). Natural England Research Report NERR094 (Natural England Research Report NERR094, 2021).
3. Aerts, R., Huiszoon, A., van Oostrum, J. H. A., van de Vijver, C. A. D. M. & Willems, J. H. The potential for heathland restoration on formerly arable land at a site in Drenthe, the Netherlands. J. Appl. Ecol. 32, 827–835 (1995).
4. Clarke, C. T. Role of soils in determining sites for lowland heathland reconstruction in England. Restor. Ecol. 5, 256–264 (1997).
5. HMSO. Biodiveristy: The UK Action Plan. (1994).