Experimental examination of effectiveness of vegetation as bio-filter of particulate matters in the urban environment
Experimental examination of effectiveness of vegetation as bio-filter of particulate matters in the urban environment
复制标题
城市环境中植被作为颗粒物生物过滤器有效性的实验检验
DOI：
10.1016/j.envpol.2015.09.006
复制
发表时间：
2016-01-01
影响因子：
8.9
通讯作者：
Zhang, Zhiqiang
中科院分区：
文献类型：
--
作者：
Chen, Lixin;Liu, Chenming;Zhang, Zhiqiang
研究主要集中在污染物在植被表面的沉积或植被的空气动力学空间冲突，在植被种植是否可以有效地减少空气颗粒物（PM）污染。为了更全面地了解这一冲突，我们于2013年和2014年在中国北京进行了实验，以评估植被种类、种植配置和风在城市和街道尺度上影响PM浓度的重要性。结果表明，在城市尺度上，风场的净化作用大于植被的净化作用。所有六个研究种植配置减少总悬浮颗粒沿着水平方向，但不是垂直方向。灌木和树木草配置进行最有效的水平PM2.5的减少，但垂直衰减。PMs的捕集能力具有物种特异性，但物种选择标准很难推广到实际应用中。因此，在城市环境中，植物配置的设计实际上比树种选择更有效地降低环境PM浓度。(C)2015爱思唯尔有限公司版权所有。
Studies focused on pollutants deposition on vegetation surfaces or aerodynamics of vegetation space conflict in whether vegetation planting can effectively reduce airborne particulate matter (PM) pollution. To achieve a more comprehensive understanding of the conflict, we conducted experiments during 2013 and 2014 in Beijing, China to evaluate the importance of vegetation species, planting configurations and wind in influencing PM concentration at urban and street scales. Results showed that wind field prevailed over the purification function by vegetation at urban scale. All six examined planting configurations reduced total suspended particle along horizontal but not vertical direction. Shrubs and trees grass configurations performed most effectively for horizontal PM2.5 reduction, but adversely for vertical attenuation. Trapping capacity of PMs was species-specific, but species selection criteria could hardly be generalized for practical use. Therefore, design of planting configuration is practically more effective than tree species selection in attenuating the ambient PM concentrations in urban settings. (C) 2015 Elsevier Ltd. All rights reserved.