Abstract
Sap flow and potential evapotranspiration rates were analyzed for two coniferous tree species (Douglas-fir and Scots pine) and one broadleaf species (sessile oak) in a mixed Carpineto-Quercetum forest during the growing season 2005. The relationship between sap flow and potential evapotranspiration rates, effective crown area as a measure of the relative transpiration and daily relative proportion of the storage water used for transpiration were used as indicators of the tree water dynamics. These indicators were determined on four consecutive days and all three showed good reliability concerning tree water dynamics.
Abbreviations
- Aeff :
-
effective crown area
- DOY:
-
day of year
- PET:
-
potential evapotranspiration
- PETtree :
-
PET extrapolated at tree level
- Qwt :
-
tree sap flow rate
References
Allen, R., Pereira, L.S., Raes, D., Smith, M.: Crop Evapotranspiration — Guidelines for Computing Crop Water Requirements. — Food and Agriculture Organization of the United Nations (FAO), Rome 1998.
Bequet, R.: Comparative study of the sap flow of coniferous and deciduous trees with different root systems and at a different water supply. — Master Thesis, Université Libre de Bruxelles, Bruxelles 2006.
Čermák, J., Huzulák, J., Penka, M.: Water potential and sap flow rate in adult trees with moist and dry soil as used for the assessment of root system depth. — Biol. Plant. 22: 34–41, 1980.
Čermák, J., Úlehla, J., Kučera, J., Penka, M.: Sap flow rate and transpiration dynamics in the full-grown oak (Quercus robur L.) in floodplain forest exposed to seasonal floods as related to potential evapotranspiration and tree dimensions. — Biol. Plant. 24: 15–29, 1982.
Čermák, J., Kučera, J., Nadezhdina, N.: Sap flow measurements with some thermodynamic methods, flow integration within trees and scaling up from sample trees to entire stands. — Trees 18: 529–546, 2004.
Čermák, J., Kučera, N., Bauerle, W.L., Phillips, J., Hinckley, T.M.: Tree water storage and its diurnal dynamics related to sap flow and changes of trunk volume in old-growth Douglas-fir trees. — Tree Physiol. 27: 181–198, 2007.
Kupper, P., Sellin, A., Klimánková, Z., Pokorný, R., Puértolas, J.: Water relations in Norway spruce trees growing at ambient and elevated CO2 concentrations. — Biol. Plant. 50: 603–609, 2006.
Larcher, W. (ed.): Physiological Plant Ecology 4th Edition. — Springer-Verlag, Berlin — Heidelberg — New York 2003.
Nadezhdina, N.: Sap flow index as an indicator of plant water status. — Tree Physiol. 19: 885–891, 1999.
Nicolás, E., Torrecillas, A., Ortuño, M.F., Domingo, R., Alarcón, J.J.: Evaluation of transpiration in adult apricot trees from sap flow measurements. — Agr. Water Manage. 72: 131–145, 2005.
Ortuño, M.F., Alarcón, J.J., Nicolás, E., Torrecillas, A.: Water status indicators of lemon tree in response to flooding and recovery. — Biol. Plant. 51: 292–296, 2007.
Acknowledgments
The authors thank V. Nadezhdin for technical assistance. Funding was provided by the Bilateral Exchange Programme of the Flemish Community and the Czech Republic (Contract No. BWS-BOF-2004), by the Project of the Ministry of Education, Youth and Sports of the Czech Republic (MSM 6215648902) and by Project NAZV QG 60063 on “Douglas-fir the most important introduced species in sustainable forestry”.
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Bequet, R., Čermák, J., Nadezhdina, N. et al. Tree water dynamics non-destructively assessed through sap flow measurements and potential evapotranspiration. Biol Plant 54, 366–368 (2010). https://doi.org/10.1007/s10535-010-0065-4
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DOI: https://doi.org/10.1007/s10535-010-0065-4