RT Journal Article
SR Electronic
T1 Leaf-Gas Exchange of Five Tree Species at Urban Street Sites
JF Arboriculture & Urban Forestry (AUF)
FD International Society of Arboriculture
SP 113
OP 124
DO 10.48044/jauf.2015.012
VO 41
IS 3
A1 Sten Gillner
A1 Sandra Korn
A1 Andreas Roloff
YR 2015
UL http://auf.isa-arbor.com/content/41/3/113.abstract
AB For street trees, site-specific soil and microclimate conditions can restrict growth, health, and longevity for many species. Many urban sites are characterized by a high amount of impervious surface and paved areas resulting in a high rate of surface runoff, low infiltration into soil, and strong reradiation effects. In maintaining the ecologic and economic benefits of street trees through future decades, it is essential to establish species with a high tolerance to stressful urban environments.Researchers measured leaf-gas exchange of Acer platanoides, Acer pseudoplatanus, Platanus × hispanica, Quercus rubra, and Tilia platyphyllos to assess stomatal conductance, transpiration, and net photosynthesis at impervious urban sites in the city of Dresden, Germany.The results show significantly higher leaf-gas exchange rates for the species Platanus × hispanica and Quercus rubra, compared to the species Acer platanoides and Acer pseudoplatanus. The significantly higher mean values of water-use efficiency of Platanus × hispanica and Quercus rubra, and in particular the values during the selected periods with a high vapor pressure deficit, indicate more economical water consumption.