N2O Budgets in Peatlands - from Process to Ecosystem

The PeatlandN2O project aims to quantify and model nitrous oxide emissions from peatlands using innovative measurement techniques and environmental factors to improve mitigation strategies and predict global impacts.

Subsidie
€ 3.498.875
2023

Projectdetails

Introduction

Nitrous oxide (N2O) is a powerful greenhouse gas and a dangerous stratospheric O3 depleting agent. Agriculture and forestry in peatlands are the main sources of N2O emissions. Climate extreme events may boost the emissions, but knowledge on their effect is scarce.

N2O Production Mechanisms

N2O is a product of a variety of soil processes, including denitrification, nitrification, and less studied mechanisms. Partitioning of N2O fluxes between all these different mechanisms is still a major challenge. Microbial processes are of particular importance for N2O budgets. The role of canopy and tree stems in N2O budgets is currently unknown.

Measurement Techniques

Novel flux measurement techniques implemented at different levels, in combination with remote sensing methods, can provide a solid basis for adequate estimation of long-term N2O fluxes in peatlands from local to the global scale. The ground-breaking nature of the proposal lies in the integrated use of a combination of innovative methods yielding a pioneering synthesis and modelling of nitrous oxide fluxes at various spatial scales, linked to microbial processes.

Objectives of the PeatlandN2O Project

The PeatlandN2O project will:

  1. Determine the role of rapidly changing environmental factors (soil moisture, freeze-thaw, canopy effects) on N2O emission, particularly in hot spots and hot moments.
  2. Distinguish between and quantify key N2O production and consumption processes using labelled nitrogen, isotopologues, and microbiome structure.
  3. Integrate results of experiments and novel measurement techniques (automated chambers, stationary and mobile eddy covariance towers, canopy profile analysis) into the PEATN2O model of N2O fluxes and related environmental factors to enable prediction of hot spots and hot moments of N2O emissions.
  4. Upgrade IPCC emission factors and suitable land-use strategies to mitigate N2O emissions in peatlands, also considering other greenhouse gases.
  5. Predict global distribution of N2O emissions according to the land-use and climate change scenarios for a 100-year time horizon.

Financiële details & Tijdlijn

Financiële details

Subsidiebedrag€ 3.498.875
Totale projectbegroting€ 3.498.875

Tijdlijn

Startdatum1-9-2023
Einddatum31-8-2028
Subsidiejaar2023

Partners & Locaties

Projectpartners

  • TARTU ULIKOOLpenvoerder

Land(en)

Estonia

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