N2O emissions from plants are reduced under photosynthetic activity

Sammanfattning

• New plant functions in the exchange of greenhouse gases between ecosystems and atmosphere have recently been discovered. We tested whether photosynthetic activity has an effect on N₂O emission rates from incubated plant–soil systems.
• Two laboratory experiments were performed. One to unravel possible effect of photosynthetic activity on the net N₂O ecosystem exchange for two species (beech and ash saplings). The other to account for possible effects from rhizosphere and aboveground plant parts separately (ash sapling only).
• Total N₂O emissions from both plant and plant–soil systems were significantly lower under light than in darkness (31%–65%). The photosynthetic effect only applied to the aboveground plant parts.
• Underlying processes have now to be unraveled to improve our understanding of ecosystem functioning. This will improve modeling and budgeting of greenhouse gas exchanges between ecosystems and the atmosphere.

Publicerad i

Plant-Environment Interactions
2020, volym: 1, nummer: 1, sidor: 48-56

SLU författare

• Meurer, Katharina

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    
  • Universität Koblenz-Landau

UKÄ forskningsämne

Klimatvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1002/pei3.10015

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/108845