Volatile organic compound emissions from Miscanthus and short rotation coppice willow bioenergy crops

被引：27

作者：

Copeland, Nichola ^{[1
,2
]}

Cape, J. Neil ^{[2
]}

Heal, Mathew R. ^{[1
]}

机构：

[1] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

[2] Ctr Ecol & Hydrol, Penicuik EH26 0QB, Midlothian, Scotland

来源：

ATMOSPHERIC ENVIRONMENT | 2012年 / 60卷

关键词：

VOC; Isoprene; Bioenergy; Miscanthus; Willow; Eddy covariance; TECHNICAL NOTE; VOC EMISSIONS; ISOPRENE; FLUXES; HYDROCARBONS; CHEMISTRY; AEROSOLS; IMPACTS; OZONE; MODEL;

D O I：

10.1016/j.atmosenv.2012.06.065

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Miscanthus x giganteus and short rotation coppice (SRC) willow (Salix spp.) are increasingly important bioenergy crops. Above-canopy fluxes and mixing ratios of volatile organic compounds (VOCs) were measured in summer for the two crops at a site near Lincoln, UK, by proton transfer reaction mass spectrometry (PTR-MS) and virtual disjunct eddy covariance. The isoprene emission rate above willow peaked around midday at similar to 1 mg m(-2) h(-1), equivalent to 20 mu g g(dw)(-1) h(-1) normalised to 30 degrees C and 1000 mu mol m(-2) s(-1) PAR, much greater than for conventional arable crops. Average midday peak isoprene mixing ratio was similar to 1.4 ppbv. Acetone and acetic acid also showed small positive daytime fluxes. No measurable fluxes of VOCs were detected above the Miscanthus canopy. Differing isoprene emission rates between different bioenergy crops, and the crops or vegetation cover they may replace, means the impact on regional air quality should be taken into consideration in bioenergy crop selection. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：327 / 335

页数：9

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