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Title: Sensitivity of global soil carbon stocks to combined nutrient enrichment

Abstract

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.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3];  [1];  [4];  [5];  [6];  [7]; ORCiD logo [8];  [9];  [10];  [11];  [12];  [13];  [14];  [15]
  1. Netherlands Institute of Ecology
  2. University of Minnesota
  3. Minnesota, Univ Of - Minneapol
  4. Utah State University
  5. Queensland University of Technology
  6. Arizona State University
  7. South African Environmental Observation Network
  8. BATTELLE (PACIFIC NW LAB)
  9. University of Nebraska - Lincoln
  10. University of Kentucky
  11. University of Guelph
  12. National Universty of Southern Patagonia
  13. CSIRO
  14. University of Lancaster
  15. ETHZurich
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1571278
Report Number(s):
PNNL-SA-147127
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Ecology Letters
Additional Journal Information:
Journal Volume: 22; Journal Issue: 6
Country of Publication:
United States
Language:
English
Subject:
Global change, nutrient enrichment, nutrient Network (NutNet), soil carbon

Citation Formats

Crowther, T W., Riggs, Charlotte, Lind, Eric, Borer, Elizabeth, Seabloom, Eric, Hobbie, Sarah, Wubs, Jasper, Adler, Peter, Firn, Jennifer, Gherardi, Laureano, Hagenah, Nicole, Hofmockel, Kirsten S., Knops, Johannes, Mcculley, Rebecca, Mcdougall, Andrew, Peri, Pablo, Prober, Suzanne, Stevens, Carly, and Routh, Devin. Sensitivity of global soil carbon stocks to combined nutrient enrichment. United States: N. p., 2019. Web. doi:10.1111/ele.13258.
Crowther, T W., Riggs, Charlotte, Lind, Eric, Borer, Elizabeth, Seabloom, Eric, Hobbie, Sarah, Wubs, Jasper, Adler, Peter, Firn, Jennifer, Gherardi, Laureano, Hagenah, Nicole, Hofmockel, Kirsten S., Knops, Johannes, Mcculley, Rebecca, Mcdougall, Andrew, Peri, Pablo, Prober, Suzanne, Stevens, Carly, & Routh, Devin. Sensitivity of global soil carbon stocks to combined nutrient enrichment. United States. doi:10.1111/ele.13258.
Crowther, T W., Riggs, Charlotte, Lind, Eric, Borer, Elizabeth, Seabloom, Eric, Hobbie, Sarah, Wubs, Jasper, Adler, Peter, Firn, Jennifer, Gherardi, Laureano, Hagenah, Nicole, Hofmockel, Kirsten S., Knops, Johannes, Mcculley, Rebecca, Mcdougall, Andrew, Peri, Pablo, Prober, Suzanne, Stevens, Carly, and Routh, Devin. Sat . "Sensitivity of global soil carbon stocks to combined nutrient enrichment". United States. doi:10.1111/ele.13258.
@article{osti_1571278,
title = {Sensitivity of global soil carbon stocks to combined nutrient enrichment},
author = {Crowther, T W. and Riggs, Charlotte and Lind, Eric and Borer, Elizabeth and Seabloom, Eric and Hobbie, Sarah and Wubs, Jasper and Adler, Peter and Firn, Jennifer and Gherardi, Laureano and Hagenah, Nicole and Hofmockel, Kirsten S. and Knops, Johannes and Mcculley, Rebecca and Mcdougall, Andrew and Peri, Pablo and Prober, Suzanne and Stevens, Carly and Routh, Devin},
abstractNote = {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.},
doi = {10.1111/ele.13258},
journal = {Ecology Letters},
number = 6,
volume = 22,
place = {United States},
year = {2019},
month = {6}
}

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