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干旱区科学  2015, Vol. 7 Issue (1): 27-36    DOI: 10.1007/s40333-014-0075-8
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Relating soil moisture and air temperature to evapotranspiration fluxes during inter-storm periods at a Mediterranean experimental site
Antonia LONGOBARDI1, Elina KHAERTDINOVA2*
1 Department of Civil Engineering, University of Salerno, Via Ponte Don Melillo, Fisciano 84084, Italy;
2 Department of Production Safety and Industrial Ecology, Ufa State Aviation Technical University, Ufa 450000, Russia
Relating soil moisture and air temperature to evapotranspiration fluxes during inter-storm periods at a Mediterranean experimental site
Antonia LONGOBARDI1, Elina KHAERTDINOVA2*
1 Department of Civil Engineering, University of Salerno, Via Ponte Don Melillo, Fisciano 84084, Italy;
2 Department of Production Safety and Industrial Ecology, Ufa State Aviation Technical University, Ufa 450000, Russia
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摘要 The assessment of the water losses by actual evapotranspiration plays a very important role in water resources management, especially in particular environments suffering soil water stresses and water shortages. The rationales of this study are the scarcity of experimental data, the difficulties in the measurement of direct and continuous evapotranspiration fluxes, and the switching between controls by climate and soil water availability. The temporal patterns of observed soil moisture and air temperature of over three years at an experimental site in southern Italy have been analysed to investigate the relation between them and the actual evapotranspiration volume, estimated using the soil water budget method. To this end, an event-based empirical analysis has been performed, exploring the relation between the mentioned variables. One of the major findings of the explorative phase is the qualitative and quantitative identification of the switching between climate and soil water balance as the controls over actual evapotranspiration at the experimental site. This threshold process has then been modelled at the event and sub-event scale, establishing simple empirical equations to predict actual evapotranspiration losses as a function of soil water content. Multilevel-recorded data also allowed the investigation of the importance of soil depth.
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Antonia LONGOBARDI
Elina KHAERTDINOVA
关键词:  climate warming  nitrogen deposition  temperate grassland  31P nuclear magnetic resonance spectroscopy    
Abstract: The assessment of the water losses by actual evapotranspiration plays a very important role in water resources management, especially in particular environments suffering soil water stresses and water shortages. The rationales of this study are the scarcity of experimental data, the difficulties in the measurement of direct and continuous evapotranspiration fluxes, and the switching between controls by climate and soil water availability. The temporal patterns of observed soil moisture and air temperature of over three years at an experimental site in southern Italy have been analysed to investigate the relation between them and the actual evapotranspiration volume, estimated using the soil water budget method. To this end, an event-based empirical analysis has been performed, exploring the relation between the mentioned variables. One of the major findings of the explorative phase is the qualitative and quantitative identification of the switching between climate and soil water balance as the controls over actual evapotranspiration at the experimental site. This threshold process has then been modelled at the event and sub-event scale, establishing simple empirical equations to predict actual evapotranspiration losses as a function of soil water content. Multilevel-recorded data also allowed the investigation of the importance of soil depth.
Key words:  climate warming    nitrogen deposition    temperate grassland    31P nuclear magnetic resonance spectroscopy
收稿日期:  2013-11-19      修回日期:  2014-02-24           出版日期:  2015-02-10      发布日期:  2014-03-26      期的出版日期:  2015-02-10
基金资助: 

The authors gratefully acknowledge funding support provided through the Ministry of Education and Science of the Russian Federation and Italian Ministry of University and Research under the grant ORSA128417.

通讯作者:  Elina KHAERTDINOVA     E-mail:  ElinaSagitovna@yandex.ru
引用本文:    
Antonia LONGOBARDI, Elina KHAERTDINOVA. Relating soil moisture and air temperature to evapotranspiration fluxes during inter-storm periods at a Mediterranean experimental site[J]. 干旱区科学, 2015, 7(1): 27-36.
Antonia LONGOBARDI, Elina KHAERTDINOVA. Relating soil moisture and air temperature to evapotranspiration fluxes during inter-storm periods at a Mediterranean experimental site. Journal of Arid Land, 2015, 7(1): 27-36.
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