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作者

Naomi J. Paull;Daniel Krix;Peter J. Irga;Fraser R. Torpy

来源

URBAN FORESTRY & URBAN GREENING,Vol.63,Issue1,Article 127201

语言

英文

关键字

Air pollution;Green walls;Green infrastructure;Plant health

作者单位

Plants and Environmental Quality Research Group, School of Life Sciences, Faculty of Science, University of Technology Sydney, P.O. Box 123, Broadway, Sydney, NSW, 2007, Australia;School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Australia;Local Land Services, The New South Wales Department of Regional NSW, Australia;Plants and Environmental Quality Research Group, School of Life Sciences, Faculty of Science, University of Technology Sydney, P.O. Box 123, Broadway, Sydney, NSW, 2007, Australia;School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Australia;Local Land Services, The New South Wales Department of Regional NSW, Australia

摘要

Air pollution exposure can impact plant physiology, morphology and biochemistry, leading to dramatic alterations to plant systems, function and growth. The use of plants for air pollution mitigation is increasing in popularity, particularly in the form of green wall systems, making the identification and classification of pollution sensitive and tolerant species essential. This study aimed to examine the health of common green wall species exposed to ambient air pollution in situ, and thus to identify tolerant species for use in high pollution environments. To do this, 11 plant species were sampled across 15 outdoor green walls, over a 6 month period, and tested for leaf chlorophyll, pH, relative water content and carbon content. Control glasshouse samples were collected simultaneously. Linear mixed models were used to examine patterns in plant health traits across species. Significant differences in plant health between control and in situ samples were observed, however, plant species were not consistent in their responses across health variables. As such, there no clear distinction of the most tolerant species could be made. As most species showed no significant health differences from pollution exposure, it is reasonable to conclude that all test species were able to withstand pollution exposure at the trial sites without any adverse effects.