Forest Roles in Particle Removal during Spring Dust Storms on Transport Path

文献类型： 外文期刊

第一作者： Wei, Wenjun

作者： Wei, Wenjun;Wang, Bing;Niu, Xiang;Wei, Wenjun;Wang, Bing;Niu, Xiang;Wang, Bing;Niu, Xiang

作者机构：

关键词： forests; particles removal; dust storm; dust transport path

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：4.614； 五年影响因子：4.798 ）

ISSN：

年卷期： 2020 年 17 卷 2 期

页码：

收录情况： SCI

摘要： The transpacific transport of mineral dust often occurs in spring, and a large amount of aeolian dust is deposited in the Asian continent and north Pacific. Moreover, a heterogeneous reaction occurs when dust particles are mixed with man-made pollution gases and particles. In the present study, atmospheric PM10 and PM2.5 concentrations were investigated, and a scanning electron microscope and an X-ray energy spectrometer were used to analyze the effects of dust resistance and capture by forests. It showed that (1) the PM2.5 and PM10 concentrations during a dust storm, on sunny days, and during light pollution periods, were higher in the non-forest covered area (NFC area) than in the forest covered area (FC area), except during heavy pollution events; which suggests that the forests have a strong effect on dust resistance; (2) the PM reduction efficiency of forests was highest on sunny days, followed by light pollution periods, heavy pollution periods, and during the dust storm; (3) after the dust storm, TSP captured by leaves significantly increased, especially for the broadleaved tree species; and the particulates number in the grooves on leaves' surface increased particularly sharply. This study will help improve the dust resistance and retention efficiency of forest shelterbelt projects during dust storms.

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