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NilsDroste

Nils Droste

Principal Investigator | Associate Senior Lecturer

NilsDroste

Soil carbon insures arable crop production against increasing adverse weather due to climate change

Author

  • Nils Droste
  • Wilhelm May
  • Yann Clough
  • Gunnar Börjesson
  • Mark Vincent Brady
  • Katarina Hedlund

Summary, in English

Intensification of arable crop production degrades soil health and production potential through loss of soil organic carbon. This, potentially, reduces agriculture's resilience to climate change and thus food security. Furthermore, the expected increase in frequency of adverse and extreme weather events due to climate change are likely to affect crop yields differently, depending on when in the growing season they occur. We show that soil carbon provides farmers with a natural insurance against climate change through a gain in yield stability and more resilient production. To do this, we combined yield observations from 12 sites and 54 years of Swedish long-term agricultural experiments with historical weather data. To account for heterogenous climate effects, we partitioned the growing season into four representative phases for two major cereal crops. Thereby, we provide evidence that higher soil carbon increases yield gains from favourable conditions and reduces yield losses due to adverse weather events and how this occurs over different stages of the growing season. However, agricultural management practices that restore the soil carbon stock, thus contributing to climate change mitigation and adaptation, usually come at the cost of foregone yield for the farmer in the short term. To halt soil degradation and make arable crop production more resilient to climate change, we need agricultural policies that address the public benefits of soil conservation and restoration.

Department/s

  • Department of Political Science
  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • Centre for Environmental and Climate Science (CEC)
  • MERGE: ModElling the Regional and Global Earth system
  • AgriFood Economics Centre, SLU
  • Biodiversity
  • Soil Ecology

Publishing year

2020-12-24

Language

English

Publication/Series

Environmental Research Letters

Volume

15

Issue

12

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Environmental Sciences related to Agriculture and Land-use
  • Soil Science

Keywords

  • soil organic carbon
  • soil biodiversity
  • arable crop production
  • climate change
  • agricultural long-term experiments

Status

Published

Research group

  • Soil Ecology

ISBN/ISSN/Other

  • ISSN: 1748-9326