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Sensitivity of global soil carbon stocks to combined nutrient enrichment.

  • Crowther TW Institute of Integrative Biology, ETH Zurich, Univeritätstrasse 16, 8092, Zurich, Switzerland.
  • Riggs C Department of Ecology, Evolution, and Behavior, University of Minnesota, 1479 Gortner Ave. St, Paul, MN, 55108, USA.
  • Lind EM Department of Ecology, Evolution, and Behavior, University of Minnesota, 1479 Gortner Ave. St, Paul, MN, 55108, USA.
  • Borer ET Department of Ecology, Evolution, and Behavior, University of Minnesota, 1479 Gortner Ave. St, Paul, MN, 55108, USA.
  • Seabloom EW Department of Ecology, Evolution, and Behavior, University of Minnesota, 1479 Gortner Ave. St, Paul, MN, 55108, USA.
  • Hobbie SE Department of Ecology, Evolution, and Behavior, University of Minnesota, 1479 Gortner Ave. St, Paul, MN, 55108, USA.
  • Wubs J Department of Terrestrial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB, Wageningen, Netherlands.
  • Adler PB Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT, 84322, USA.
  • Firn J Queensland University of Technology (QUT), Gardens Point Campus, Brisbane Queensland, 40000, Australia.
  • Gherardi L School of Life Sciences and Global Drylands Center, Arizona State University, Temple, USA.
  • Hagenah N Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa.
  • Hofmockel KS Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
  • Knops JMH School of Biological Sciences, University of Nebraska, Lincoln, NE, 68588, USA.
  • McCulley RL Department of Plant & Soil Sciences, University of Kentucky, Lexington, KY, 40546, USA.
  • MacDougall AS Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada, N1G 2W1.
  • Peri PL Department of Forestry, Agriculture and Water, National University-INTA-CONICET, Rio Gallegos, Santa Cruz, Patagonia, Argentina.
  • Prober SM CSIRO Land and Water, Private Bag 5, Wembley, Western Australia, 6913.
  • Stevens CJ Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
  • Routh D Institute of Integrative Biology, ETH Zurich, Univeritätstrasse 16, 8092, Zurich, Switzerland.
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  • 2019-03-19
Published in:
  • Ecology letters. - 2019
Global change
nutrient Network (NutNet)
nutrient enrichment
soil carbon
Carbon
Ecosystem
Nitrogen
Nutrients
Soil
English Soil stores approximately twice as much carbon as the atmosphere and fluctuations in the size of the soil carbon pool directly influence climate conditions. We used the Nutrient Network global change experiment to examine how anthropogenic nutrient enrichment might influence grassland soil carbon storage at a global scale. In isolation, enrichment of nitrogen and phosphorous had minimal impacts on soil carbon storage. However, when these nutrients were added in combination with potassium and micronutrients, soil carbon stocks changed considerably, with an average increase of 0.04 KgCm-2  year-1 (standard deviation 0.18 KgCm-2  year-1 ). These effects did not correlate with changes in primary productivity, suggesting that soil carbon decomposition may have been restricted. Although nutrient enrichment caused soil carbon gains most dry, sandy regions, considerable absolute losses of soil carbon may occur in high-latitude regions that store the majority of the world's soil carbon. These mechanistic insights into the sensitivity of grassland carbon stocks to nutrient enrichment can facilitate biochemical modelling efforts to project carbon cycling under future climate scenarios.
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  • English
Open access status
hybrid
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Persistent URL
https://sonar.ch/global/documents/140114
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