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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

Title data

Jung, Eunyoung ; 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. Vol. 126 (2013) Issue 5 . - pp. 661-674.
ISSN 1618-0860
DOI: https://doi.org/10.1007/s10265-013-0563-5

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER151520
Keywords: Asian monsoon; Canopy conductance; Transpiration of overstory; Understory; Warm-temperate deciduous forest
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Former Professors
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Former Professors > Chair Plant Ecology - Univ.-Prof. John D. Tenhunen, Ph.D.
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professor Plant Ecology
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
Date Deposited: 29 Jan 2020 08:26
Last Modified: 30 Jan 2020 08:32
URI: https://eref.uni-bayreuth.de/id/eprint/54064