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MixForChange: Mixed Forest plantations for climate Change mitigation and adaptation

A growing body of evidence suggests that mixed forest plantations can be more efficient in sequestrating C, while better coping with climate change-related stress such as droughts and biotic disturbances. However, monocultures still dominate the world’s forest plantations. The reasons for the apparent reluctance to adopt mixed plantations among landowners and stakeholders need to be identified and addressed in future forest policies to promote the large-scale expansion of resilient mixed forest plantations. One of the possible factors that may have prevented the expansion of mixed plantations at large scales is an insufficient scientific base for management. We are currently lacking a generic understanding of the type of species mixtures that optimize climate change mitigation (carbon sequestration) and adaptation (stress resilience) across contrasting site conditions.

The overall objective of the MixForChange project is to promote mixed-species forest plantations as nature-based solutions to fight the causes and consequences of climate change, by providing science-based recommendations and guidelines endorsed by forest owners, managers and policy-makers. The project will rely on the unique global network of forest biodiversity experiments TreeDivNet (http://www.treedivnet.ugent.be/index.html), which allows for testing the effects of tree species composition on ecosystem services and functions.

One major goal of this project is to provide a mechanistic understanding of how tree diversity can enhance the overall resilience to drought stress (tree survival and growth) of mixed forest plantations in relation to their diversity of traits related to water use and hydraulic safety.  This work will be based on inventories conducted in selected TreeDivNet experiments and dendro-ecological approach (using tree cores and δ13C isotope measurements) to determine survival and growth response (in terms of resistance, recovery and resilience) following very dry years in large parts of Europe (2018-2020).

Additionally, the MixForChange project aims to characterize stakeholders' attitudes and perceptions towards mixed plantations, as well as to identify barriers (technical, cultural, and financial) to their implementation. Based on specifically-designed questionnaires under contrasting management objectives, biomes and cultural contexts, this work will allow to better understand the potential trade-offs and synergies between climate change mitigation, adaptation and stakeholders' objectives or constraints.

 

Project webpage: https://mixforchange.cirad.fr/the-project

 

Supervisors:Prof. Dr. Jürgen BauhusProf. Dr. Michael Scherer-Lorenzen
Partners:


https://mixforchange.cirad.fr/the-consortium

ResearcherHernán Serrano-León
Funding:


Deutsche Forschungsgemeinschaft (DFG)

Duration:02/2021 - 01/2024

 

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