Träd, kol och grundvatten: kompromiss eller synergi för lokal anpassning till klimatförändringar i semi-arida tropikerna?

Objectif officiel

The livelihoods of one-third of the world´s population are constrained by water availability. Despite multiple values, tree planting in water limited regions has long been prevented by the prevailing hydrological paradigm that trees reduce water availability. This judgment contrasts with the popular understanding of forests as beneficial for water availability. We propose a new theory that reconciles these perspectives and hypothesizes that in landscapes with intermediate tree cover the increases in infiltration is larger than increases in transpiration by the trees, leading to enhanced groundwater recharge. At low tree densities water yields increases with additional trees, but ultimately this relationship reaches a maximum and then declines due to excessive transpiration. This project builds on an earlier project from the research team and hence aims to determine required conditions for which an increased tree cover can give both higher carbon sequestration and improved adaptive capacity to climate change, particularly in terms of improved groundwater recharge. We will use a combination of water balance measurements and isotopic tracers to infer groundwater recharge processes, which will be related to tree cover characteristics through remote sensing and spatial analysis. The results from the project will be integrated with an ongoing livelihoods project in order to understand drivers of tree cover change and to facilitate local implementation of the research findings.

Texte publié par le bailleur. Il décrit une intention au moment de l’approbation, pas un résultat obtenu.

Calendrier

Début déclaré

1er janvier 2014

Clôture

31 décembre 2015

Durée prévue

24 mois

Financement

Budget déclaré dans la devise du bailleur, sans conversion.

Place de l’énergie

100 % du projet relève des secteurs de l’énergie, selon la ventilation déclarée par le bailleur. L’énergie en est l’objet principal.

• Recherche dans le domaine de l’énergie 100 %

Documents officiels

Aucun document publié dans les données ouvertes pour ce projet.