naa a22 4500 510737943 CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11284-013-1056-7 doi (NATIONALLICENCE)springer-10.1007/s11284-013-1056-7 Leaf carbon isotope ratio and water use efficiency of urban roadside trees in summer in Kyoto city [Elektronische Daten] [Yuichi Kagotani, Kousuke Fujino, Takahito Kazama, Yuko Hanba] The effect of summer climate on leaf carbon isotope composition (δ13C) of the major roadside tree species Prunus×yedoensis (P. yedoensis) was investigated in Kyoto city, Japan, to explore the implications for alterations in urban environments. Temperature and the vapor pressure deficit were higher at sites of higher traffic volumes, possibly affected by a heat island effect. The leaf δ13C of P. yedoensis trees was affected strongly by leaf carbon isotope discrimination (Δ), with much less effect of δ13C on atmospheric CO2. Leaf Δ values in the summer were smaller at sites of higher traffic volumes with high atmospheric temperatures, suggesting a higher long-term water use efficiency (WUE) at these sites. Gas exchange measurements of P. yedoensis leaves indeed suggested a higher intrinsic WUE at sites of higher traffic volumes with high atmospheric temperatures. These results suggest that leaf Δ is related to the response of WUE to summer climates, and that leaf δ13C in urban areas is a useful tracer for understanding the influences of urban environments on plant photosynthetic processes. The Ecological Society of Japan, 2013 Photosynthesis nationallicence Carbon isotope discrimination nationallicence Heat island nationallicence Atmospheric CO2 nationallicence Prunus yedoensis nationallicence A : CO2 assimilation rate nationallicence C i : Leaf intercellular CO2 partial pressure nationallicence Δ : Carbon isotope discrimination nationallicence δ13C : Carbon isotope ratio nationallicence δ a : δ13C of atmospheric CO2 nationallicence δ p : δ13C of plant leaves nationallicence DID : Densely inhabited district (population density of >4,000inhabitantskm−2, and a combined population of contiguous districts >5,000) nationallicence E : Evaporation rate nationallicence EC : Electric conductivity of soil nationallicence g s : Stomatal CO2 conductance nationallicence Ox : Photochemical oxidants nationallicence PPFD : Photosynthetic photon flux density nationallicence SPAD : Index of the chlorophyll concentration of the leaves developed by the Soil and Plant Analyzer Development nationallicence WC : Volumetric soil water content nationallicence WUE : Water use efficiency nationallicence Kagotani Yuichi Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut Fujino Kousuke Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut Kazama Takahito Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut Hanba Yuko Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut Ecological Research Springer Japan 28/5(2013-09-01), 725-734 0912-3814 28:5<725 2013 28 11284 https://doi.org/10.1007/s11284-013-1056-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1056-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kagotani Yuichi Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut NATIONALLICENCE 700 1- Fujino Kousuke Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut NATIONALLICENCE 700 1- Kazama Takahito Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut NATIONALLICENCE 700 1- Hanba Yuko Department of Applied Biology, Kyoto Institute of Technology, 606-8585, Kyoto, Japan aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/5(2013-09-01), 725-734 0912-3814 28:5<725 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer