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Peer-reviewedCC BY 4.0Plant and Soil

Interactions between plant growth and soil moisture determine the N2O source strength of farmed landscape depressions

  • Yujia Liu
  • Björn Kemmann
  • Per Ambus
  • Bo Elberling
  • Michael Dannenmann
  • Kristian Thorup-Kristensen
  • Daniel M N Poultney
  • Carsten W Mueller
Open at sourcePDFDOICite

Abstract

Background Topographic depressions within agricultural fields contribute disproportionately to regional nitrous oxide (N 2 O) emissions. These lowlying areas accumulate nutrients and fine particles through water inflow and erosion, creating conditions conducive to elevated N 2 O emissions. Because depressions remain part of fields, understanding how crop presence and management influence their N 2 O source strength is essential. Methods A greenhouse mesocosm experiment was conducted using soil collected from an agricultural depression under either drained or partially waterlogged conditions (water table maintained 10 cm below the soil surface). Wheat was sown at three dates (57, 43, and 29 days before waterlogging) to represent different vegetative stages and capacities for N uptake. Dissolved organic carbon (DOC), dissolved nitrogen (N), root growth, and N 2 O emissions were continuously monitored. A 15 N-labelled fertilizer was applied during the waterlogging period to trace fertilizer-derived N in emitted N 2 O, soil, and plant biomass. Results Early-sown wheat was more strongly impaired by waterlogging than later-sown treatments but nevertheless significantly reduced N 2 O emissions compared with the unplanted control, irrespective of water regime. Early-sown plants also acted as stronger N sink, indicating that greater plant N acquisition

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Cite

BibTeXRIS
BibTeX
@article{liu2026interactions,
  title = {{Interactions between plant growth and soil moisture determine the N2O source strength of farmed landscape depressions}},
  author = {Yujia Liu and Björn Kemmann and Per Ambus and Bo Elberling and Michael Dannenmann and Kristian Thorup-Kristensen and Daniel M N Poultney and Carsten W Mueller},
  journal = {Plant and Soil},
  year = {2026},
  month = aug,
  doi = {10.1007/s11104-026-09004-6},
  url = {https://hal.inrae.fr/hal-05838940v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Interactions between plant growth and soil moisture determine the N2O source strength of farmed landscape depressions
AU  - Yujia Liu
AU  - Björn Kemmann
AU  - Per Ambus
AU  - Bo Elberling
AU  - Michael Dannenmann
AU  - Kristian Thorup-Kristensen
AU  - Daniel M N Poultney
AU  - Carsten W Mueller
PY  - 2026
DA  - 2026/08/20
JO  - Plant and Soil
DO  - 10.1007/s11104-026-09004-6
UR  - https://hal.inrae.fr/hal-05838940v1
AB  - Background Topographic depressions within agricultural fields contribute disproportionately to regional nitrous oxide (N 2 O) emissions. These lowlying areas accumulate nutrients and fine particles through water inflow and erosion, creating conditions conducive to elevated N 2 O emissions. Because depressions remain part of fields, understanding how crop presence and management influence their N 2 O source strength is essential. Methods A greenhouse mesocosm experiment was conducted using soil collected from an agricultural depression under either drained or partially waterlogged conditions (water table maintained 10 cm below the soil surface). Wheat was sown at three dates (57, 43, and 29 days before waterlogging) to represent different vegetative stages and capacities for N uptake. Dissolved organic carbon (DOC), dissolved nitrogen (N), root growth, and N 2 O emissions were continuously monitored. A 15 N-labelled fertilizer was applied during the waterlogging period to trace fertilizer-derived N in emitted N 2 O, soil, and plant biomass. Results Early-sown wheat was more strongly impaired by waterlogging than later-sown treatments but nevertheless significantly reduced N 2 O emissions compared with the unplanted control, irrespective of water regime. Early-sown plants also acted as stronger N sink, indicating that greater plant N acquisition
SN  - 0032-079X
SN  - 1573-5036
ER  -