论文部分内容阅读
PM_(2.5)是造成灰霾天气频发的罪魁祸首,其粒径虽小但危害大,可借助自然界的清除机制,利用绿化树木削减PM_(2.5)污染不失为一种有效的生态学处理方式。现从吸附、吸收、降解、同化等角度阐释了绿化树木消减PM_(2.5)污染的效果、过程与作用机理;从树种种类、树木大小、生长速率、树冠特性、叶表特征等树木生物学特征、大气环境PM_(2.5)浓度、各类气候因子等方面讨论了不同绿化树种与PM_(2.5)之间作用的差异,探讨了当前对高效消减PM_(2.5)污染绿化树种进行分类筛选的研究,分析了道路绿地、公园绿地、居住区绿地等有效削减PM_(2.5)污染配植模式的研究;最后对如何建构消减PM_(2.5)绿化树种筛选评价指标体系、城市绿地配置技术等进行了展望。
PM 2.5 is the main cause of frequent haze weather. Although its particle size is small but harmful, PM 2.5 can be effectively used as an ecological treatment by means of natural removal mechanisms. The effect, process and mechanism of PM_ (2.5) pollution reduction by greening trees are explained from the aspects of adsorption, absorption, degradation and assimilation. The biological characteristics of trees such as tree species, tree size, growth rate, canopy characteristics, PM 2.5 concentrations in the atmosphere and various climatic factors were discussed in this paper. The differences between different greening tree species and PM 2.5 were discussed. The current research on the classification and screening of highly effective PM 2.5 -determinated tree species was discussed. The paper analyzes the effective ways of reducing PM 2.5 pollution and planting patterns such as road green space, park green space and residential green space. Finally, it puts forward the prospect of how to construct the screening evaluation index system and urban green space allocation technology of PM 2.5 green tree species.