The hydrocarbon emission rates of tea-leafed willow (Salix phylicifolia), silver birch (Betula pendula) and European aspen (Populus tremula)

Abstract The monoterpene, isoprene, and light hydrocarbon emission rates of tea-leafed willow ( Salix phylicifolia ), aspen ( Populus tremula ), and silver birch ( Betula pendula ) were measured during the growing season 1996 in the boreal vegetation zone using a dynamic flow-through technique. All tree species had significant (2.8–10  μ g g (dry weight) -1  h -1 ) monoterpene emission rates when leaves were young in May. In addition, willow emitted 1-butene, ethene, and propene when it was blooming in May. In August, silver birch emitted monoterpenes (6–12  μ g g (dry weight) -1  h -1 ). Then the main species emitted were ocimenes and sabinene. Birch emitted only minor amounts of isoprene. Willow and aspen are high isoprene emitters (up to 76  μ g g (dry weight) -1  h -1 in August). Isoprene emissions began 2–3 weeks after onset of leafing. The phenological state was estimated using the effective temperature sum. Isoprene synthase began when the effective temperature sum exceeded 120–210 and 120–280 degree days for willow and aspen, respectively. In addition to phenology, isoprene emissions were dependent on temperature and photosynthetically active radiation while the terpene emissions were dependent on temperature only.

[1]  J. Arey,et al.  Monoterpene emission rate measurements from a Monterey pine , 1990 .

[2]  B. Lamb,et al.  Biogenic hydrocarbon emissions from deciduous and coniferous trees in the United States , 1985 .

[3]  A. Winer,et al.  The emission of (Z)-3-hexen-1-ol, (Z)-3-hexenylacetate and other oxygenated hydrocarbons from agricultural plant species , 1991 .

[4]  W. Bowman,et al.  Delayed Onset of Isoprene Emission in Developing Velvet Bean (Mucuna sp.) Leaves. , 1991, Plant physiology.

[5]  R. Janson.  Monoterpene emissions from Scots pine and Norwegian spruce , 1993 .

[6]  R. Monson,et al.  Isoprene emission from aspen leaves : influence of environment and relation to photosynthesis and photorespiration. , 1989, Plant physiology.

[7]  C. N. Hewitt,et al.  Emissions of VOCs from Stressed and Unstressed Vegetation , 1997 .

[8]  H. Neumann,et al.  Modelled and field measurements of biogenic hydrocarbon emissions from a Canadian deciduous forest , 1995 .

[9]  D. Kotzias,et al.  Decomposition of Terpenes by Ozone during Sampling on Tenax. , 1996, Analytical chemistry.

[10]  S. Slanina.  Biosphere-atmosphere exchange of pollutants and trace substances: experimental and theoretical studies of biogenic emissions and of pollutant deposition. , 1997 .

[11]  C. N. Hewitt,et al.  Laboratory and field studies of biogenic volatile organic compound emissions from Sitka spruce (Picea sitchensis Bong.) in the United Kingdom , 1996 .

[12]  J. Kesselmeier,et al.  Emission of monoterpenes and isoprene from a Mediterranean oak species Quercus ilex L. measured within the BEMA (Biogenic Emissions in the Mediterranean Area) project , 1996 .

[13]  Russell K. Monson,et al.  Isoprene and monoterpene emission rate variability: Observations with Eucalyptus and emission rate algorithm development , 1991 .

[14]  C. N. Hewitt,et al.  Biogenic emissions in Europe: 1. Estimates and uncertainties , 1995 .

[15]  R. Conrad,et al.  Biological Mechanisms involved in the Exchange of Trace Gases , 1997 .

[16]  D. Olszyk,et al.  Emission rates of organics from vegetation in California's Central Valley , 1992 .

[17]  R. Monson,et al.  Relationships among Isoprene Emission Rate, Photosynthesis, and Isoprene Synthase Activity as Influenced by Temperature. , 1992, Plant physiology.

[18]  T. Holfmann.  Adsorptive preconcentration technique including oxidant scavenging for the measurement of reactive natural hydrocarbons in ambient air , 1995 .

[19]  D. Olszyk,et al.  Terpenes emitted from agricultural species found in California's Central Valley , 1991 .

[20]  D. Crowley,et al.  Hydrocarbon emissions from natural vegetation in California's South Coast Air Basin , 1995 .

[21]  A. Winer.  Hydrocarbon emissions from vegetation found in California's central valley. , 1989 .

[22]  R. Monson,et al.  Isoprene and monoterpene emission rate variability: Model evaluations and sensitivity analyses , 1993 .

[23]  C. N. Hewitt,et al.  Emissions of volatile organic compounds from vegetation and the implications for atmospheric chemistry , 1992 .

[24]  I. Zenkevich,et al.  Volatile organic compounds in the atmosphere of forests , 1985 .

[25]  H. Hakola,et al.  Seasonal cycle of C2C5 hydrocarbons over the Baltic Sea and Northern Finland , 1996 .