聊城市徒骇河风景区常绿植物对大气颗粒物削减作用

Effect of Evergreen Plants on Atmospheric Particulates Reductionin Tuhai River Scenic Area of Liaocheng City

文章以聊城市徒骇河风景区10种常绿植物群落为研究对象,测定植物群落内的大气颗粒物浓度和叶面积指数、叶表特征等指标,结果表明,10种群落对3种粒径大气颗粒物的吸附作用存在较大差异。刚竹、圆柏对PM2.5和PM10的吸附作用较强,而白皮松、红叶石楠对PM2.5和PM10的吸附作用则较弱;圆柏、广玉兰对TSP吸附作用较强,大叶女贞、红叶石楠对TSP的吸附作用则较弱;叶面积指数和叶表特征对植物群落吸附不同粒径大气颗粒物具有一定的影响。通过观测冬季不同常绿植物群落对不同粒径大气颗粒物的削减作用,以及叶表面特征和群落冠层对其影响,为大气颗粒物污染的治理在植物选择上提供参考。

The 10 evergreen plant communities of the Tuhai River Scenic Spot in Liaocheng City were selected to measure the concentration of atmospheric particulates and leaf area index (LAI). The result showed that the adsorption effects of 3 different atmospheric particulates were significantly different among the 10 communities. The absorption effect of Phyllostachys viridis and Sabina chinensis for PM 2.5 and PM 10 was stronger while Pinus bungeana and Photinia fraseri Dress had a weak absorption effect;S. chinensis and Magnolia Grandiflora Linn have stronger adsorption effect on TSP than Ph. fraseri Dress and Ligustrun lucidum Ait. The LAI and leaf surface characteristics had an impact on the adsorption of atmospheric particulates of different sizes by plant communities. The observation of the effect of different evergreen plant communities on the reduction of atmospheric particulates of different sizes as well as the influence of the leaf surface characteristics and community canopy would provide references for the plant selection to reduce the pollution of the atmospheric particulates.