Transpiration of Pinus rotundata on a wooded peat bog in central Europe

0353271 - BÚ 2011 RIV DE eng J - Článek v odborném periodiku
Kučerová, Andrea - Čermák, J. - Nadezhdina, N. - Pokorný, J.
Transpiration of Pinus rotundata on a wooded peat bog in central Europe.
Trees: structure and function. Roč. 24, č. 5 (2010), s. 919-930. ISSN 0931-1890. E-ISSN 1432-2285
Výzkumný záměr: CEZ:AV0Z60050516
Klíčová slova: heat field deformation method * sap flow * water table
Kód oboru RIV: EF - Botanika
Impakt faktor: 1.444, rok: 2010

Transpiration of a central European endemic tree species, Pinus rotundata Link, growing on a wooded peat bog in the Třeboń Basin, Czech Republic, was studied in 1999–2000. Transpiration was measured by sap flow techniques (heat field deformationmethod) on individual trees and scaled up to stand level. The radial patterns of sap flow density showed narrow peaks in the outer part of the xylem, sapwood accounted for 47–60%of the xylemradius and 72–84% of the xylem basal area. Adult trees tolerated well both short-term flooding during the growing season and drawdown of the water table to a depth of 60 cm below ground level. The maximum and mean daily transpiration rates were 3.0 and 1.8 mm per day, and were thus similar to published data for Scots pine. The seasonal total transpiration (25 April–20 October 2000, 180 days) amounted to 322 mm, or 62% of the potential evapotranspiration over this period.
Trvalý link: http://hdl.handle.net/11104/0192562