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INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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ForeSTree

The team ForeSTree has two general objectives: 1. to improve our knowledge of the functioning of trees and stand dynamics in interaction with environmental factors (including climate and competition), and 2. to evaluate the available resources in order to optimize their usage. These objectives follow the common goal to manage forest socio-ecosystems that respond to the challenges of climate change (adaptation, mitigation), sustainable development and bioeconomy.

The research themes focus on ecosystem services such as carbon sequestration and preservation of diversity and on the forest as a resource, understood in a broad sense including the full range of wood products for different uses, such as timber, industrial wood and fuelwood. Another goal of the team is to develop indicators of forest resources, of the economics of forest management and the expected benefits at the ecological and social levels. ForeSTree aims at contributing to the development and dissemination of the forest sciences and techniques at scales from the tree to the territory and with a multi-criteria approach.

The understanding of forest resource dynamics is based on the analysis of gas flows (CO2, H2O, CH4, N2O) and balances of element (water, carbon, nitrogen) and energy in production systems, with scales ranging from organs to ecosystems. It also includes the study of the processes of allocation and intra- and inter-annual partitioning of nitrogen and carbon within the tree using ecophysiology approaches. In a complementary way, forest growth at different scales (tree to stand) and the links with wood properties (quality criteria, biomass, carbon, extractables...) are studied using a phenomenological (dendrometric-based) approach in relation with the environment and competition, and modulated by silviculture.

One of the originalities of the team is the coupling between studies on the dynamics of the forest resource, on the one hand, and the impact of climate change on the functioning of forests and their environmental performances (carbon budget, water economy, long-term maintenance of fertility, biodiversity), on the other hand. Another originality is the combination of approaches to study the interactions of tree species in forest and agroforest stands and the interest of biodiversity in the functioning of ecosystems.

The ForeSTree team mobilizes a very wide range of disciplines such as biochemistry, functional ecology, community ecology, modeling, ecophysiology, dendrometry, forest growth and production ("growth and yield science"), silviculture, wood quality, and sciences of decision. It develops very diverse methodologies: isotopic analysis and tracing, eddy covariance, tomography, and scanner imagery.