|Start:||1 February 2021|
|Aim:||To improve understanding of controls of element cycling in rewetted ecosystems and to find robust indicators for the tradeoffs of wet management.|
Project coordinator: Kristiina Lång (firstname.lastname@example.org)
Project communication representative: Tuula Larmola (email@example.com)
Wet management with raised ground water table and flood-tolerant crops is an option to reduce peat decomposition and the related greenhouse gas emissions and water contamination from cultivated peatlands while still providing income for the farmers.
However, there are sites with the risk of tradeoffs like high methane or phosphorus emissions diminishing the environmental benefits. Measurable indicators used in the selection of sites would increase the success rate of rewetting and thus the acceptability of wet agricultural management of peat soils.
Experimental work together with modelling and advanced analysis of peat composition in INSURE project aims at improved understanding of controls of element cycling in rewetted ecosystems and to finding robust indicators for the tradeoffs of wet management.
Responsible person from organization: Kristiina Regina
Responsible person from organization: Jens Leifeld
Responsible person from organization: David Wall
Aarhus University (AU)
Responsible person from organization: Poul Erik Lærke
NIBIO (Norwegian Institute for Bioeconomy Research), Norway
Responsible person from organization: Christophe Moni
STICHTING WAGENINGEN RESEARCH (DLO/WR)
Responsible persons from organization: Rudi Hessel
Storing more C in soils may lead to adverse effects on the climate and on the environment, by increasing other GHG emissions (N2O, CH4) and by affecting water quality (nitrate leaching). Soil management strategies for C sequestration focus on increased input of organic matter (crop residues, cover crops, green manure, biochar etc.) or decreased turnover of soil organic matter via either increased stabilization of SOC in mineral soils (manipulation of soil microbiome and soil biology to increase formation of stabilized SOC, quality of organic matter inputs, spatio-temporal distribution of inputs) or by reducing the conditions for SOC turnover (e.g. increased groundwater table in previously cultivated and drained peatlands and organic soils). Many of these strategies have significant implications for emissions of methane and nitrous oxide, i.e. rewetting of peatlands may greatly enhance methane emissions and adding N-rich crop residues may enhance nitrous oxide emissions and nitrate leaching.
The project will analyse the potential trade-offs for major pedo-climatic zones and farming systems in Europe. The project will gather knowledge from past and current EU activities on quantifying the trade-offs and synergies, initiate and perform targeted measurements and modelling activities to fill in significant knowledge gaps, and synthesize knowledge into proposed robust indicators to predict trade-offs and synergies, as well as measures to mitigate trade-offs.
Robust indicators to predict trade-offs and synergies, as well as measures to mitigate trade-offs.
Two medium size projects (2x150 PM), considering the specificities of organic versus mineral soils or contrasted climate conditions in Europe.
Available funding: 2*1.73 M€