Land management: Data availability and process understanding for global change studies

Erb Karl-Heinz, Luyssaert Sebastiaan, Meyfroidt Patrick, Pongratz Julia, Don Axel, Kloster Silvia, Kuemmerle Tobias, Fetzel Tamara, Fuchs Richard, Herold Martin, Haberl Helmut, Jones Chris D., Marin-Spiotta Erika, McCallum Ian, Robertson Eddy, Seufert Verena, Fritz Steffen, Valade Aude, Wiltshire Andrew, Dolman Albertus J.. 2017. Land management: Data availability and process understanding for global change studies. Global Change Biology, 23 (2) : 512-533.

Quartile : Outlier, Sujet : ENVIRONMENTAL SCIENCES / Quartile : Outlier, Sujet : BIODIVERSITY CONSERVATION / Quartile : Outlier, Sujet : ECOLOGY

Résumé : In the light of daunting global sustainability challenges such as climate change, biodiversity loss and food security, improving our understanding of the complex dynamics of the Earth system is crucial. However, large knowledge gaps related to the effects of land management persist, in particular those human-induced changes in terrestrial ecosystems that do not result in land-cover conversions. Here, we review the current state of knowledge of ten common land management activities for their biogeochemical and biophysical impacts, the level of process understanding and data availability. Our review shows that ca. one-tenth of the ice-free land surface is under intense human management, half under medium and one-fifth under extensive management. Based on our review, we cluster these ten management activities into three groups: (i) management activities for which data sets are available, and for which a good knowledge base exists (cropland harvest and irrigation); (ii) management activities for which sufficient knowledge on biogeochemical and biophysical effects exists but robust global data sets are lacking (forest harvest, tree species selection, grazing and mowing harvest, N fertilization); and (iii) land management practices with severe data gaps concomitant with an unsatisfactory level of process understanding (crop species selection, artificial wetland drainage, tillage and fire management and crop residue management, an element of crop harvest). Although we identify multiple impediments to progress, we conclude that the current status of process understanding and data availability is sufficient to advance with incorporating management in, for example, Earth system or dynamic vegetation models in order to provide a systematic assessment of their role in the Earth system. This review contributes to a strategic prioritization of research efforts across multiple disciplines, including land system research, ecological research and Earth system modelling.

Mots-clés Agrovoc : biodiversité, changement climatique, traitement des données, sécurité alimentaire, gestion foncière, gestion des ressources naturelles, pâturage sélectif, aménagement forestier, disponibilité alimentaire, écosystème

Mots-clés libres : Land management, Data availability, Earth system models, Process understanding

Agences de financement européennes : European Commission, European Research Council

Agences de financement hors UE : Einstein Stiftung Berlin

Programme de financement européen : FP7

Projets sur financement : (EU) A model-based, decision-support tool for soil erosion hazard assessment following forest wildfires, (EU) Land use change: assessing the net climate forcing, and options for climate change mitigation and adaptation, (EU) Developing middle-range theories linking land use displacement, intensification and transitions, (EU) Effects of phosphorus limitations on Life, Earth system and Society

Auteurs et affiliations

• Erb Karl-Heinz, Alpen-Adria Universität (AUT) - auteur correspondant
• Luyssaert Sebastiaan, CNRS (FRA)
• Meyfroidt Patrick, UCL (BEL)
• Pongratz Julia, Max Planck Institute for Meteorology (DEU)
• Don Axel, Thünen Institute of Climate-Smart Agriculture (DEU)
• Kloster Silvia, Max Planck Institute for Meteorology (DEU)
• Kuemmerle Tobias, Humboldt Universität zu Berlin (DEU)
• Fetzel Tamara, Alpen-Adria Universität (AUT)
• Fuchs Richard, University of Amsterdam (NLD)
• Herold Martin, Wageningen University and Research Centre (NLD)
• Haberl Helmut, Alpen-Adria Universität (AUT)
• Jones Chris D., Met Office Hadley Centre (GBR)
• Marin-Spiotta Erika, University of Wisconsin (USA)
• McCallum Ian, IIASA (AUT)
• Robertson Eddy, Met Office Hadley Centre (GBR)
• Seufert Verena, University of British Columbia (CAN)
• Fritz Steffen, IIASA (AUS)
• Valade Aude, CNRS (FRA)
• Wiltshire Andrew, Met Office Hadley Centre (GBR)
• Dolman Albertus J., University of Amsterdam (NLD)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/604925/)

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