Soil Carbon Loss.pdf

bg-19-3381-2022.pdf
Preview of Soil Carbon Loss
🔗 Source: bg.copernicus.org
📊 Size: 2.98 MB
📄 Pages: 13 pages
⬇️ Downloads: 150

Summary

Soil organic carbon (SOC) stocks in subarctic grasslands decline strongly and linearly with warming, at a rate of -2.8 t ha-1 °C-1. The decline occurs rapidly, within the first 5 years of warming, and is restricted to topsoil (0-10 cm). Subsoil (10-30 cm) SOC stocks remain unchanged after >50 years of warming. The loss of SOC in topsoil occurs in all aggregate size fractions. The study suggests that ecosystem adaptations to warming may play a critical role in the rapid equilibration of SOC, implying short-lived soil carbon-climate feedbacks. The findings highlight the importance of explicit vertical resolution in global models to accurately project future SOC stocks.

Description

Soil carbon loss in warmed subarctic grasslands occurs rapidly, mainly in topsoil. This loss is significant and affects the ecosystem's carbon balance. Topsoil is the primary area of carbon loss.

Technical Information

  • File Format: PDF
  • File Size: 2.98 MB
  • Pages: 13
  • Language: EN
  • Total Downloads: 150
  • Last Updated: 1 week ago

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