Networking our science to characterize the state, vulnerabilities, and management opportunities of soil organic matter

Research output: Contribution to journalArticle

Abstract

Soil organic matter (SOM) supports the Earth's ability to sustain terrestrial ecosystems, provide food and fiber, and retains the largest pool of actively cycling carbon. Over 75% of the soil organic carbon (SOC) in the top meter of soil is directly affected by human land use. Large land areas have lost SOC as a result of land use practices, yet there are compensatory opportunities to enhance productivity and SOC storage in degraded lands through improved management practices. Large areas with and without intentional management are also being subjected to rapid changes in climate, making many SOC stocks vulnerable to losses by decomposition or disturbance. In order to quantify potential SOC losses or sequestration at field, regional, and global scales, measurements for detecting changes in SOC are needed. Such measurements and soil-management best practices should be based on well established and emerging scientific understanding of processes of C stabilization and destabilization over various timescales, soil types, and spatial scales. As newly engaged members of the International Soil Carbon Network, we have identified gaps in data, modeling, and communication that underscore the need for an open, shared network to frame and guide the study of SOM and SOC and their management for sustained production and climate regulation.

Details

Authors
  • Jennifer W. Harden
  • Gustaf Hugelius
  • Joseph C. Blankinship
  • Ben Bond-Lamberty
  • Corey R. Lawrence
  • Julie Loisel
  • Avni Malhotra
  • Robert B. Jackson
  • Stephen Ogle
  • Claire Phillips
  • Rebecca Ryals
  • Katherine E. O. Todd-Brown
  • Rodrigo Vargas
  • Sintana E. Vergara
  • M. Francesca Cotrufo
  • Marco Keiluweit
  • Katherine A. Heckman
  • Susan E. Crow
  • Whendee L. Silver
  • Marcia Delonge
  • Lucas E. Nave
Organisations
External organisations
  • Stockholm University
  • Stanford University
  • University of Arizona
  • University of Maryland
  • Texas A and M University
  • Oak Ridge National Laboratory
  • Colorado State University
  • University of Hawaii at Manoa
  • Pacific Northwest National Laboratory
  • University of Delaware
  • University of California, Berkeley
  • University of Massachusetts
  • United States Department of Agriculture (USDA)
  • United States Geological Survey Western Region
  • Union of Concerned Scientists
  • University of Michigan
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Geography
  • Environmental Sciences related to Agriculture and Land-use

Keywords

  • Agricultural practices, C cycling, C sequestration, Global CO, Network, Soil, Soil carbon, Soil management
Original languageEnglish
Pages (from-to)e705-e718
JournalGlobal Change Biology
Volume24
Issue number2
Early online date2017 Oct 5
Publication statusPublished - 2018 Feb
Publication categoryResearch
Peer-reviewedYes