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作 者:Lixin CHEN Yun ZHANG Zhaochen KONG
机构地区:[1]State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [2]College of Life Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Earth Sciences,Hebei GEO University,Shijiazhuang 050031,China
出 处:《Science China Earth Sciences》2021年第10期1746-1760,共15页中国科学(地球科学英文版)
基 金:supported by the National Natural Science Foundation of China(Grant Nos.41971121&41572331);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA19050103);the Basic Research Foundation of Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences(Grant No.SK202012).
摘 要:Airborne pollen is indicative of vegetation and climatic conditions.This study investigates airborne pollen trapping in the Betula microphylla-dominated wetland of Ebinur Lake in Northwestern China from September 2012 to August 2015 using Pearson correlation analysis and the Hybrid Single-particle Lagrangian Integrated Trajectory model.Higher temperatures and moderate precipitation during the flowering period facilitated an increase in birch pollen with more exotic spruce pollen carried from the Tianshan Mountains by airflows,leading to the highest arbor pollen concentrations from September 2012 to August 2013.Peak pollen concentrations from September 2013 to August 2014 were possibly due to an increase in herbaceous pollen resulting from higher temperatures,lower precipitation and more exotic pollen from the desert of southwest Ebinur Lake and Central Asia in summer and autumn.Between September 2014 and August 2015,unfavorable climate conditions in summer and autumn decreased the pollen dispersal of xerophytes such as Artemisia and Chenopodiaceae,with little pollen transported from the Kazakh hilly area in late summer,resulting in the lowest pollen concentrations.Climatic parameters and air mass movements both greatly affected the atmospheric pollen concentration.The results provide information concerning the dispersion and distribution of birch pollen,paleoenvironmental reconstruction and wetland conservation.
关 键 词:Airborne pollen Meteorological factor Pearson correlation Betula pollen Ebinur wetland
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