Water consumption of a CO2 enriched poplar stand (Contributo in atti di convegno)

Type
Label
  • Water consumption of a CO2 enriched poplar stand (Contributo in atti di convegno) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Di Tommasi P., V. Magliulo, d'Andria R., Lavini A., Calandrelli D., Busiello F. (2002)
    Water consumption of a CO2 enriched poplar stand
    in Atti del Congresso inaugurale ISAFoM CNR, Portici, Napoli, 23-24 settembre
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Di Tommasi P., V. Magliulo, d'Andria R., Lavini A., Calandrelli D., Busiello F. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • atti del Convegno inaugurale CNR-ISAFOM, Portici (NA), 23-24 Settembre 2002 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • cnr isafom (literal)
Titolo
  • Water consumption of a CO2 enriched poplar stand (literal)
Abstract
  • he responses of trees to global change, particularly to the predicted increase of atmospheric CO2, will be crucial in determining the ability of planted and natural forests to sequester carbon on a global scale. Limited information is presently available on the overall behaviour of agro-forestry and forest systems to enhanced CO2. Objective of this experiment was to determine the response in terms of water use of a cultivated agro-forestry system, to future atmospheric CO2. The FACE facility is located in Tuscania (Viterbo, Central Italy) and the plantation was realized in spring 1999, utilising three different species of poplar cuttings. Within the plantation, six 350 m2 plots were treated either with atmospheric or enriched CO2 concentration (550 ppm); the three enriched plots were equipped with octagonal FACE rings enclosing a circular area of 21 m in diameter. Evapotranspiration was monitored on ambient and enriched plots of Populus x euramericana plants - by means of the residual energy balance approach - starting in the second decade of August 2001. Net radiation and soil heat flux were measured on 3 replicates for each treatment. Canopy radiative temperature was also monitored in these same plots by means of infrared thermometers, while wind and temperature profiles were measured at a single location in the centre of the field. Sensible heat flux was computed on the basis of air and canopy temperatures and of the aerodynamic resistance - and latent heat flux as the residual of the crop energy balance. The mean daytime canopy temperature of FACE plots increased up to 2 °C, but such differences decreased and were almost undetectable by the end of the measurements, in the first decade of September. During this period, mean daily water consumption decreased from about 8 mm to 6 mm and was 5.6 % lower in FACE plots. (literal)
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