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N2O Budgets in Peatlands - from Process to Ecosystem

Project description

The hidden greenhouse gas puzzle of peatlands

Nitrous oxide (N2O), a potent greenhouse gas and ozone-depleting agent, is a growing environmental concern. Peatlands, where agriculture and forestry thrive, are major contributors to N2O emissions, yet we lack a comprehensive understanding of these emissions. In this context, the ERC-funded PeatlandN2O project will unravel the complexities of N2O emissions by using innovative measurement techniques and predictive modelling to combat this escalating environmental challenge. With innovative measurement techniques and a comprehensive approach, this project aims to not only shed light on the issue but also pave the way for more effective mitigation strategies in the battle against climate change.

Objective

Nitrous oxide (N2O) is a powerful greenhouse gas and 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 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. 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 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. 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 5 climate change scenarios for 100-year time horizon.

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Topic(s)

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2022-ADG

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Host institution

TARTU ULIKOOL
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 3 498 875,00
Address
ULIKOOLI 18
51005 TARTU
Estonia

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Region
Eesti Eesti Lõuna-Eesti
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 3 498 875,00

Beneficiaries (1)

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