Airborne pollen patterns and their relationship with meteorological factors in the Betula microphylla-dominated wetland of Ebinur Lake, Xinjiang, China
Airborne pollen patterns and their relationship with meteorological factors in the Betula microphylla-dominated wetland of Ebinur Lake, Xinjiang, China
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DOI：
10.1007/s11430-020-9801-7
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发表时间：
2021-08
期刊：
影响因子：
--
通讯作者：
Lixin Chen;Yun Zhang;Z. Kong
中科院分区：
文献类型：
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作者：
Lixin Chen;Yun Zhang;Z. Kong
空气中的花粉是植被和气候条件的指示。利用Pearson相关分析和混合单粒子拉格朗日积分轨迹模型，研究了2012年9月至2015年8月艾比湖小叶桦湿地气传花粉捕获特征。开花期的高温和适度降水促进了桦树花粉的增加，更多的外来云杉花粉通过气流从天山山脉携带，导致2012年9月至2013年8月乔木花粉浓度最高。2013年9月至2014年8月的花粉浓度峰值可能是由于夏季和秋季气温升高、降水减少以及艾比湖西南部沙漠和中亚地区的外来花粉导致草本花粉增加。2014年9月至2015年8月，夏秋两季气候条件不利，降低了蒿属、藜科等旱生植物的花粉扩散，夏末从哈萨克丘陵地区运来的花粉很少，导致花粉浓度最低。气候参数和气团运动都对大气花粉浓度有很大影响。研究结果为桦树花粉的散布和分布、古环境重建和湿地保护提供了信息。
Airborne pollen is indicative of vegetation and climatic conditions. This study investigates airborne pollen trapping in theBetula 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 asArtemisiaand 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.