Emission Characteristics of BVOCs from Urban Greening Tree Species in Different Greenbelt[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 22-27.
DOI:
Emission Characteristics of BVOCs from Urban Greening Tree Species in Different Greenbelt[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 22-27. DOI: 10.13961/j.cnki.stbctb.2017.03.004.
Emission Characteristics of BVOCs from Urban Greening Tree Species in Different Greenbelt
[Objective] To explore the emission characteristics of biogenic volatile organic compounds(BVOCs) from greening tree species in different greenbelts in Tianjin City
and to provide the basis for selecting of the green tree species in urban gardens.[Methods] Four urban greening tree species like Juniperus chinensis
Salix matsudana
Malus micromalus and Sophora japonica were sampled for collecting and measuring BVOCs by dynamic bagging headspace and the thermal desorption-gas chromatography/mass spectrometry(TDS-GC/MS) technology.[Results] (1) Totally 69
84
20 and 36 types of BVOCs were detected respectively from J. chinensis
S. matsudana
M. micromalus and S. japonica. But the quantity and composition of the BVOCs released by the four urban greening trees varied in different habitats. For all the species
relative contents of olefin compounds were significantly higher than the corresponding values of other types of components. Relative contents of olefin in the four greenbelts had a rank as:road greenbelt > campus greenbelt > park greenbelt > waterfront greenbelt. On the contrary
for the contents of ester and alkane volatiles
their relatives content were obviously higher in waterfront greenbelt than the ones in other greenbelts. (2) The contents of alcohols and ketones released by S. matsudana were significantly correlated with light intensity. Relative humidity was significantly correlated with the relative contents of olefins
alkanes
alcohols
esters and ketones released by J. chinensis
the contents of alkanes and esters released by M. micromalus
the contents of olefins and esters released by S. japonica; whereas
temperature was significantly correlated with the contents of alcohols and ketones released by both J. chinensis and S. matsudana
the content of olefins released by S. japonica.[Conclusion] Greenbelt habitat condition can influence the composition and content of BVOCs released by greening tree species
but only some types of volatiles were significantly correlated with some enviromental factors.
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references
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