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Water use by a warm-temperate deciduous forest under the influence of the Asian monsoon : contributions of the overstory and understory to forest water use

Titelangaben

Jung, Eun-Young ; Otieno, Dennis Ochuodho ; Kwon, Hyojung ; Lee, Bora ; Lim, Jong Hwan ; Kim, Joon ; Tenhunen, John:
Water use by a warm-temperate deciduous forest under the influence of the Asian monsoon : contributions of the overstory and understory to forest water use.
In: Journal of Plant Research. Bd. 126 (2013) Heft 5 . - S. 661-674.
ISSN 1618-0860
DOI: https://doi.org/10.1007/s10265-013-0563-5

Abstract

The warm temperate deciduous forests in Asia have a relatively dense understory, hence, it is imperative that we understand the dynamics of transpiration in both the overstory (E O) and understory (E U) of forest stands under the influence of the Asian monsoon in order to improve the accuracy of forest water use budgeting and to identify key factors controlling forest water use under climate change. In this study, E O and E U of a temperate deciduous forest stand located in South Korea were measured during the growing season of 2008 using sap flow methods. The objectives of this study were (1) to quantify the total transpiration of the forest stand, i.e., overstory and understory, (2) to determine their relative contribution to ecosystem evapotranspiration (E eco), and (3) to identify factors controlling the transpiration of each layer. E O and E U were 174 and 22 mm, respectively. Total transpiration accounted for 55 % of the total E eco, revealing the importance of unaccounted contributions to E eco (i.e., soil evaporation and wet canopy evaporation). During the monsoon period, there was a strong reduction in the total transpiration, likely because of reductions in photosynthetic active radiation, vapor pressure deficit and plant area index. The ratio of E U to E O declined during the same period, indicating an effect of monsoon on the partitioning of E eco in its two components. The seasonal pattern of E O was synchronized with the overstory canopy development, which equally had a strong regulatory influence on E U.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER151520
Keywords: Asian monsoon; Canopy conductance; Transpiration of overstory; Understory; Warm-temperate deciduous forest
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Ehemalige Professoren
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Ehemalige Professoren > Lehrstuhl Pflanzenökologie - Univ.-Prof. John D. Tenhunen, Ph.D.
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Professur Pflanzenökologie
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie
500 Naturwissenschaften und Mathematik > 580 Pflanzen (Botanik)
Eingestellt am: 29 Jan 2020 08:26
Letzte Änderung: 10 Mai 2022 13:18
URI: https://eref.uni-bayreuth.de/id/eprint/54064