Arid
DOI10.5194/acp-18-5747-2018
Sensitivity of stomatal conductance to soil moisture: implications for tropospheric ozone
Anav, Alessandro1; Proietti, Chiara1; Menut, Laurent2; Carnicelli, Stefano3; De Marco, Alessandra4; Paoletti, Elena1
通讯作者Anav, Alessandro
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2018
卷号18期号:8页码:5747-5763
英文摘要

Soil moisture and water stress play a pivotal role in regulating stomatal behaviour of plants; however, in the last decade, the role of water availability has often been neglected in atmospheric chemistry modelling studies as well as in integrated risk assessments, despite the fact that plants remove a large amount of atmospheric compounds from the lower troposphere through stomata.


The main aim of this study is to evaluate, within the chemistry transport model CHIMERE, the effect of soil water limitation on stomatal conductance and assess the resulting changes in atmospheric chemistry testing various hypotheses of water uptake by plants in the rooting zone.


Results highlight how dry deposition significantly declines when soil moisture is used to regulate the stomatal opening, mainly in the semi-arid environments: in particular, over Europe the amount of ozone removed by dry deposition in one year without considering any soil water limitation to stomatal conductance is about 8.5 TgO(3), while using a dynamic layer that ensures that plants maximize the water uptake from soil, we found a reduction of about 10% in the amount of ozone removed by dry deposition (similar to 7.7 TgO(3)). Although dry deposition occurs from the top of canopy to ground level, it affects the concentration of gases remaining in the lower atmosphere, with a significant impact on ozone concentration (up to 4 ppb) extending from the surface to the upper troposphere (up to 650 hPa).


Our results shed light on the importance of improving the parameterizations of processes occurring at plant level (i.e. from the soil to the canopy) as they have significant implications for concentration of gases in the lower troposphere and resulting risk assessments for vegetation or human health.


类型Article
语种英语
国家Italy ; France
收录类别SCI-E
WOS记录号WOS:000430923400001
WOS关键词NET PRIMARY PRODUCTIVITY ; GROUND-LEVEL OZONE ; LEAF GAS-EXCHANGE ; DRY DEPOSITION ; WATER-BALANCE ; WEATHER RESEARCH ; EUROPEAN FOREST ; TRANSPORT MODEL ; CLIMATE-CHANGE ; GLOBAL-SCALE
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207886
作者单位1.CNR, Inst Sustainable Plant Protect, Sesto Fiorentino, Italy;
2.Ecole Polytech, IPSL, LMD, Palaiseau, France;
3.Univ Florence, Earth Sci Dept, Florence, Italy;
4.Italian Natl Agcy New Technol, Energy & Environm ENEA, CR Casaccia, Santa Maria Di Galeria, Italy
推荐引用方式
GB/T 7714
Anav, Alessandro,Proietti, Chiara,Menut, Laurent,et al. Sensitivity of stomatal conductance to soil moisture: implications for tropospheric ozone[J],2018,18(8):5747-5763.
APA Anav, Alessandro,Proietti, Chiara,Menut, Laurent,Carnicelli, Stefano,De Marco, Alessandra,&Paoletti, Elena.(2018).Sensitivity of stomatal conductance to soil moisture: implications for tropospheric ozone.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(8),5747-5763.
MLA Anav, Alessandro,et al."Sensitivity of stomatal conductance to soil moisture: implications for tropospheric ozone".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.8(2018):5747-5763.
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