Airborne pollen assemblages and weather regime in the central-eastern Loess Plateau, China

This paper presents the results of pollen trapping studies designed to quantify the pollen assemblages carried in the winds of the Loess Plateau in Luochuan and Hunyuan. The one-year-collection samples analysis results show that pollen assemblages can be more sensitive to the change of climate than...

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Bibliographic Details
Published in:Atmospheric environment (1994) 2015-04, Vol.106, p.92-99
Main Authors: Li, Yuecong, Ge, Yawen, Xu, Qinghai, Bunting, Jane M., Lv, Suqing, Wang, Junting, Li, Zetao
Format: Article
Language:English
Subjects:
Airborne pollen
Artemisia
Betula
Brassicaceae
Carpinus
Chenopodiaceae
Cupressaceae
Dust weather
Fabaceae
Hippophae
Loess Plateau
Non-dust weather
Pinus
Quercus
Redundancy analysis
Rosaceae
Salix
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Summary:This paper presents the results of pollen trapping studies designed to quantify the pollen assemblages carried in the winds of the Loess Plateau in Luochuan and Hunyuan. The one-year-collection samples analysis results show that pollen assemblages can be more sensitive to the change of climate than the vegetation composition, because of the change of pollen production. The analysis results of pollen traps in different weather regimes indicate that the pollen influx coming from dust weather contribute more to the total pollen influx than that coming from non-dust weather. The wind speed is the most important influenced factor to pollen assemblages, then the mean temperature and the mean relative humidity, the wind direction also contributes some. Strong wind coming from dust direction can make the percent and influx of Artemisia and Chenopodiaceae increase obviously with averagely higher than over 2.7 times in dust weather than in non-dust samples. The influences of wind speed and wind direction are not serious to some arboreal pollen such as Rosaceae, Quercus, Betula, Pinus and Ostryopsis, which are mainly influenced by temperature or the relative humidity such as Salix, Hippophae, Carpinus, Brassicaceae, Cupressaceae, Fabaceae. •The influxes of Artemisia and Chenopodiaceae will increase in dust weather obviously.•The pollen influx coming from dust weather contributes more to the total influx.•Pollen assemblages are more sensitive to climate change than vegetation composition.
ISSN:1352-2310
1873-2844
DOI:10.1016/j.atmosenv.2015.01.066