Arid
DOI10.1016/j.agrformet.2017.02.007
Springtime ecosystem-scale monoterpene fluxes from Mediterranean pine forests across a precipitation gradient
Seco, Roger1; Karl, Thomas2; Turnipseed, Andrew3; Greenberg, Jim4; Guenther, Alex1; Llusia, Joan5,6; Penuelas, Josep5,6; Dicken, Uri7; Rotenberg, Eyal7; Kim, Saewung1; Yakir, Dan7
通讯作者Seco, Roger
来源期刊AGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
EISSN1873-2240
出版年2017
卷号237页码:150-159
英文摘要

We quantified springtime ecosystem-scale monoterpene fluxes from two similar Aleppo pine (Pinus halepensis Mill.) forests, located in Israel, that differed in the amount of received precipitation: Yatir in the arid south and Birya in the northern part of Israel (291 and 755 mm annual average rainfall, respectively). In addition to the lower water availability, during our measurement campaign the Yatir site suffered from a heat wave with temperatures up to 35 degrees C, which made the campaign-average net CO2 assimilation to occur in the morning (1 mu mol m(-2) S-1), with the rest of the daytime hours mainly dominated by net release of CO2. The milder conditions at Birya favored a higher net CO2 assimilation during all daytime hours (with average peaks higher than 10 pmol m(-2) s(-1)). Despite these large differences in ambient conditions and CO2 net assimilation, daytime monoterpene emission capacities at both sites were comparable. While observed monoterpene fluxes were lower at Yatir than at Birya (hourly averages up to 0.4 and 1 mg m(-2) h(-1), respectively), the standardized hourly fluxes, after accounting for the differences in light, temperature and stand density between both sites, were comparable (0-1.3 mg m(-2) h(-1)). The approach typically used by biogenic emission models overestimated monoterpene fluxes at Yatir when temperatures rose during the heat wave. This result, together with complementary leaf-level measurements showing that summertime monoterpene fluxes almost completely ceased at Yatir while being enhanced at Birya, highlight the interaction of water scarcity and high temperatures that drive monoterpene emissions from vegetation in such extreme climate zones and the need to further improve model performance. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Monoterpenes Drought Biogenic emissions MEGAN VOC Pinus halepensis
类型Article
语种英语
国家USA ; Austria ; Spain ; Israel
收录类别SCI-E
WOS记录号WOS:000399266000015
WOS关键词VOLATILE ORGANIC-COMPOUNDS ; REACTION MASS-SPECTROMETRY ; EMISSION RATE VARIABILITY ; OXYGENATED VOC EMISSIONS ; ISOPRENE EMISSION ; SCOTS PINE ; STOMATAL CONDUCTANCE ; BIOGENIC EMISSIONS ; COMPOUND EMISSIONS ; WATER AVAILABILITY
WOS类目Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197102
作者单位1.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA;
2.Univ Innsbruck, Inst Atmospher & Cryospher Sci, Innsbruck, Austria;
3.2B Technol Inc, Boulder, CO 80301 USA;
4.Natl Ctr Atmospher Res, Atmospher Chem Div, Boulder, CO 80301 USA;
5.CREAF, Barcelona 08193, Catalonia, Spain;
6.CREAF CSIC UAB, Global Ecol Unit, Barcelona 08193, Catalonia, Spain;
7.Weizmann Inst Sci, Earth & Planetary Sci, IL-76100 Rehovot, Israel
推荐引用方式
GB/T 7714
Seco, Roger,Karl, Thomas,Turnipseed, Andrew,et al. Springtime ecosystem-scale monoterpene fluxes from Mediterranean pine forests across a precipitation gradient[J],2017,237:150-159.
APA Seco, Roger.,Karl, Thomas.,Turnipseed, Andrew.,Greenberg, Jim.,Guenther, Alex.,...&Yakir, Dan.(2017).Springtime ecosystem-scale monoterpene fluxes from Mediterranean pine forests across a precipitation gradient.AGRICULTURAL AND FOREST METEOROLOGY,237,150-159.
MLA Seco, Roger,et al."Springtime ecosystem-scale monoterpene fluxes from Mediterranean pine forests across a precipitation gradient".AGRICULTURAL AND FOREST METEOROLOGY 237(2017):150-159.
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