Arboriculture & Urban Forestry 42(5): September 2016 Arboriculture & Urban Forestry 2016. 42(5): 329–345 329 Carbon Uptake and Air Pollution Mitigation of Different Evergreen Shrub Species Jacopo Mori, Alessio Fini, Gianluca Burchi, and Francesco Ferrini (Arbutus unedo L., Elaeagnus × ebbingei L., Laurus nobilis L., Ligustrum japonicum Thunb., Photinia × fraseri Dress., Viburnum tinus subsp. lucidum L., and Viburnum tinus subsp. tinus L.). CO2 Abstract. Three independent experiments assessed CO2 assimilation and metals leaf deposition of seven evergreen shrub species assimilation and carbon allocation were determined in 2011 (Exp. 1) under optimal water availability and in 2012 (Exp. 2) under drought on potted plants. A third experiment (Exp. 3) mea- sured seasonal leaf depositions of Cd, Cu, Ni, Pb, and Zn in 2011 on plants transplanted in proximity of a four-lane road. E. × ebbingei showed the highest CO2 In Experiment 3, E. × ebbingei showed the highest metal deposition, mainly due to its greater leaf area. Greater rainfall and RH% decreased metal depositions, whilst greater wind velocity and air temperature increased leaf depositions. Species which drasti- cally reduce CO2 2). Conversely, P. × fraseri had intermediate CO2 prone environments, where drought-tolerant “mesic” species (P. × fraseri), should be preferred. E. × ebbingei could be used to optimize deposition of metals. The three experiments provide useful insights especially about CO2 japonicum Thunb.; Meteorological Parameters; Photinia × fraseri Dress.; Relative Growth Rate; Seasonal Trend; Shrub; Trace Metals; Traffic Pollution; Viburnum tinus subsp. lucidum L.; Viburnum tinus subsp. tinus L. assimilation under drought (V. tinus subsp. lucidum, L. japonicum, E. × ebbingei) are not recommended in drought- assimilation (Exp. 1, 2) and air pol- lution mitigation (Exp. 3) of widely used shrubs for application in urban areas and planning of roadside greening in southern Europe. Key Words. Arbutus unedo L.; CO2 Assimilation; Drought; Elaeagnus × ebbingei L.; Italy; Laurus nobilis L.; Leaf Deposition; Ligustrum assimilation under optimal water availability but one of the lowest under drought (Exp. 1, assimilation but it declined less during drought compared to the other species. tions (Grubler 1994; O’Meara 1999; Suzuki 2006). Since the early 1900s, the average surface tem- perature of Earth has increased by 0.74°C (IPCC 2013). Global warming is mainly driven by CO2 Human activities, such as vehicle traffic, industry, and the heating and conditioning of buildings, contribute to changing the atmospheric environ- ment in terms of CO2 , into organic carbon mean photosynthesis. CO2 is which is largely emitted from the combustion of fossil fuels (PBL Netherlands Environmental As- sessment Agency 2013). Urban greening has been reported to contribute effectively to the uptake and storage of atmospheric CO2 through its conversion then stored as woody biomass for medium to long periods, depending on the average life span of the species involved and the use of the woody mate- rial aſter removal from the planting site (Pugh et al. 2012; Nowak et al. 2013). The potential of trees and shrubs to remove CO2 and air pollution concentra- and pollutants is en- hanced when they are planted within or near ur- et al. 2013). Previous research investigated CO2 storage by several trees species and found that this ban environments, where the concentration of CO2 and pollutants is higher (Niinemets and Peñuelas 2007). In addition, they offer others benefits in situ, such as improving microclimate conditions and reducing energy consumption of buildings for air conditioning (McCarthy et al. 2010). Plant species differ in their relative capacity to assimi- late and store CO2 (Somogyi et al. 2008; Semwal poorly investigated, even though they may ac- count for about 10%–11% of total carbon storage and for 21%–25% of total annual carbon uptake by urban vegetation (Jo and McPherson 1995). is positively related to life span and size at matu- rity of the tree (Nowak and Crane 2002). How- ever, CO2 storage potential of shrubs has been ©2016 International Society of Arboriculture
September 2016
| Title Name |
Pages |
Delete |
Url |
| Empty |
Search Text Block
Page #page_num
#doc_title
Hi $receivername|$receiveremail,
$sendername|$senderemail wrote these comments for you:
$message
$sendername|$senderemail would like for you to view the following digital edition.
Please click on the page below to be directed to the digital edition:
$thumbnail$pagenum
$link$pagenum
Your form submission was a success. You will be contacted by Washington Gas with follow-up information regarding your request.
This process might take longer please wait
