Comparative study of long-term water uptake of Norway spruce and Douglas-fir in Moravian upland

Long-term water uptake of Douglas-fir and Norway spruce trees, growing in condition of Moravian upland, was studied with aim of comparing sap flow in small roots with flow in stems. Sap flow was measured by the heat field deformation method using multi-point sensors for stems and single-point sensor...

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Bibliographic Details
Published in:Journal of Hydrology and Hydromechanics 2014-03, Vol.62 (1), p.1-6
Main Authors: Nadezhdina, Nadezhda, Urban, Josef, Cermak, Jan, Nadezhdin, Valeriy, Kantor, Petr
Format: Article
Language:English
Subjects:
Altitude
deep roots
Drought
Forestry
heat field deformation
Highlands
Hydrology
Picea abies
Precipitation
Radiation
Roots
sap flow
Sensors
shallow roots
Soil fertility
Soil water
soil water potential
Stems
Trees
Uptakes
Water shortages
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Summary:Long-term water uptake of Douglas-fir and Norway spruce trees, growing in condition of Moravian upland, was studied with aim of comparing sap flow in small roots with flow in stems. Sap flow was measured by the heat field deformation method using multi-point sensors for stems and single-point sensors for roots. Differences between species were found in relationships between sap flow in tree stems and water uptake by roots, suggesting that Douglas-fir is able to take water from deeper soil more efficiently than spruce. This allows Douglas-fir to transpire more water especially during drought and grow faster than spruce. These biological features should be taken into account for future forest species compositions because they may have impact on both, forestry and hydrology.
ISSN:0042-790X
1338-4333
DOI:10.2478/johh-2014-0001