Bonjour à tous,
Nous organisons une session sur le pergélisol à la conférence Eurosoil 2020 (à Genève du 24 au 28 août), dont vous trouverez le résumé ci-dessous. La soumission des résumés est encore possible jusqu’au 28 février, donc n’hésitez pas! Merci également de faire circuler cette annonce autour de vous.
6.10. Permafrost soils under climate change – connecting soil functions and human activity (Convenors: Julien Fouche, Yannick Agnan, Marie Alexis, Christopher Peoplau, Andreas Richter and Carsten W. Mueller)
Climate change is modifying boreal and polar regions at unprecedented rate. The thawing of permafrost has strong effects on hydrological and biogeochemical cycles, possibly increasing trace gas emissions and inducing a positive feedback on global climate change. Although climate change impacts on the permafrost carbon are intensively studied, our understanding of the complex interactions between biogeochemical cycles (i.e., N, P, Si, Hg) is limited due to the lack of integrative studies across frozen-ground landscapes. Modifications of high-latitude ecology and hydrology will interplay with the soil functioning affecting nutrient availability, weathering, carbon stabilization, and contaminant mobilization. But climate change also affects geophysical and hydrological processes such as increased thermokarst formation and coastal erosion, strongly impacting local communities that face an unprecedented change of their livelihood. An increase in agricultural activity is one example of potential anthropogenic adaptation to changing patterns of permafrost distribution, which might additionally affect biogeochemical cycles. Thus, soils of the Arctic are of ample importance for global matter cycles and possible extension of arable grounds. This session aims to bring together scientists working on soils in high latitudes, reaching from hydrology, biogeochemistry, microbiology and geomorphology. Besides the soil functioning we also explicitly invite work on new avenues in Arctic agriculture and land management. Let’s come together and share results, views and concepts to better connect the knowledge of soils and biogeochemical cycling at the poles and human activity.