Association between local airborne tree pollen composition and surrounding land cover across different spatial scales in Northern Belgium

《Association between local airborne tree pollen composition and surrounding land cover across different spatial scales in Northern Belgium》

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作者: Michiel Stas;Raf Aerts;Marijke Hendrickx;Nicolas Bruffaerts;Nicolas Dendoncker;Lucie Hoebeke;Catherine Linard;Tim Nawrot;An Van Nieuwenhuyse;Jean-Marie Aerts;Jos Van Orshoven;Ben Somers

来源: URBAN FORESTRY & URBAN GREENING,Vol.61,Issue1,Article 127082

语言: 英文

关键字: Aerobiology;Allergy;NMDS;Passive sampling;Urban green areas

作者单位: Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E-2411, BE-3001, Leuven, Belgium;Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), KU Leuven, Kasteelpark Arenberg 30-2472, B-3001, Leuven, Belgium;Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050, Brussels, Belgium;Division Ecology, Evolution and Biodiversity Conservation, KU Leuven, Kasteelpark Arenberg 31-3245, BE-3001, Leuven, Belgium;Center for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan Gebouw D, B-3590, Hasselt, Belgium;Mycology and Aerobiology, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050, Brussels, Belgium;Department of Geography, University of Namur, Rue de Bruxelles 61, B-5000, Namur, Belgium;Institute for Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, B-5000, Namur, Belgium;Center Environment and Health, Department of Public Health and Primary Care, KU Leuven, Kapucijnenvoer 35 blok d box 7001, B-3000, Leuven, Belgium;Department of Health Protection, Laboratoire national de santé (LNS), 1, Rue Louis Rech, L-3555, Dudelange, Luxembourg;Division Forest, Nature and Landscape, Department Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E-2411, BE-3001, Leuven, Belgium;Measure, Model & Manage Bioresponses (M3-BIORES), Division Animal and Human Health Engineering, Department of Biosystems (BIOSYST), KU Leuven, Kasteelpark Arenberg 30-2472, B-3001, Leuven, Belgium;Risk and Health Impact Assessment, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050, Brussels, Belgium;Division Ecology, Evolution and Biodiversity Conservation, KU Leuven, Kasteelpark Arenberg 31-3245, BE-3001, Leuven, Belgium;Center for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan Gebouw D, B-3590, Hasselt, Belgium;Mycology and Aerobiology, Sciensano (Belgian Institute of Health), J. Wytsmanstraat 14, B-1050, Brussels, Belgium;Department of Geography, University of Namur, Rue de Bruxelles 61, B-5000, Namur, Belgium;Institute for Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, B-5000, Namur, Belgium;Center Environment and Health, Department of Public Health and Primary Care, KU Leuven, Kapucijnenvoer 35 blok d box 7001, B-3000, Leuven, Belgium;Department of Health Protection, Laboratoire national de santé (LNS), 1, Rue Louis Rech, L-3555, Dudelange, Luxembourg

摘要: Airborne pollen are important aeroallergens affecting human health. Local airborne pollen compositions can pose health-risks for the sensitized population, but at present little is known about fine-scale pollen composition patterns.The overall objective of this study is to determine local variations in tree pollen composition with passive samplers and to identify the surrounding landscape characteristics that drive them. In February–May 2017, during the tree pollen season, airborne tree pollen were measured by passive sampling at 2 m height above ground-level in 14 sites in the Flanders and Brussels-Capital region (Belgium). Non-metric multidimensional scaling was used to investigate environmental gradients that determine the pollen composition and amounts. Land cover types were identified across spatial scales ranging between 20 m and 5 km.The passive samplers detected the same pollen taxa during the same time windows as the validated volumetric Burkard samplers. Using passive samplers, we were able to measure local airborne pollen compositions. Corylus and Platanus pollen were associated to urban areas; Populus, Juglans and Fraxinus pollen to agricultural areas; forests and wetlands were sources of Alnus and Quercus pollen. Salix, Populus and Betula pollen were also mainly associated to wetlands. The landscape context drives the airborne tree pollen composition at a meso-scale (1−5 km) rather than at finer scale (20−500 m). Thus, land cover types (e.g. forest, bush land, agricultural lands and wetlands) surrounding urban areas may increase exposure to allergenic pollen in the urban area, potentially affecting the health of a large proportion of the population.