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Decadal water balance of a temperate Scots pine forest (Pinus sylvestris L.) based on measurements and modelling

Bert Gielen, Hans Verbeeck UGent, Johan Neirynck, F Vermeiren and Ivan A Janssens (2010) BIOGEOSCIENCES. 7(4). p.1247-1261
abstract
We examined the water balance components of an 80-year-old Scots pine (<i>Pinus sylvestris</i> L.) forest stand in the Campine region of Belgium over a ten year period using five very different approaches; our methods ranged from data intensive measurements to process model simulations. Specifically, we used the conservative ion method (CI), the Eddy Covariance technique (EC), an empirical model (WATBAL), and two process models that vary greatly in their temporal and spatial scaling, the ORCHIDEE global land-surface model and SECRETS a stand- to ecosystem-scale biogeochemical process model. Herein we used the EC technique as a standard for the evapotranspiration (ET) estimates. Using and evaluating process based models with data is extremely useful as models are the primary method for integration of small-scale, process level phenomena into comprehensive description of forest stand or ecosystem function. Results demonstrated that the two process models corresponded well to the seasonal patterns and yearly totals of ET from the EC approach. However, both WATBAL and CI approaches overestimated ET when compared to the EC estimates. We found significant relationships between several meteorological variables (i.e., vapour pressure deficit [VPD], mean air temperature [<i>T</i><sub>air</sub>], and global radiation [<i>Rg</i>]) and ET on monthly basis for all approaches. In contrast, few relationships were significant on annual basis. Independent of the method examined, ET exhibited low inter-annual variability. Consequently, drainage fluxes were highly correlated with annual precipitation for all approaches examined, except CI.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
EDDY-COVARIANCE, NET ECOSYSTEM EXCHANGE, ENERGY-BALANCE, CARBON-DIOXIDE, SAP-FLOW, FLUX MEASUREMENTS, CO2 EXCHANGE, LARCH FOREST, SCALING-UP, SOIL
journal title
BIOGEOSCIENCES
Biogeosciences
volume
7
issue
4
pages
1247 - 1261
Web of Science type
Article
Web of Science id
000277185300004
JCR category
GEOSCIENCES, MULTIDISCIPLINARY
JCR impact factor
3.587 (2010)
JCR rank
11/163 (2010)
JCR quartile
1 (2010)
ISSN
1726-4170
language
English
UGent publication?
yes
classification
A1
copyright statement
I have retained and own the full copyright for this publication
id
931567
handle
http://hdl.handle.net/1854/LU-931567
alternative location
http://www.biogeosciences.net/7/1247/2010/bg-7-1247-2010.html
date created
2010-04-20 09:49:36
date last changed
2011-07-12 11:52:54
@article{931567,
  abstract     = {We examined the water balance components of an 80-year-old Scots pine ({\textlangle}i{\textrangle}Pinus sylvestris{\textlangle}/i{\textrangle} L.) forest stand in the Campine region of Belgium over a ten year period using five very different approaches; our methods ranged from data intensive measurements to process model simulations. Specifically, we used the conservative ion method (CI), the Eddy Covariance technique (EC), an empirical model (WATBAL), and two process models that vary greatly in their temporal and spatial scaling, the ORCHIDEE global land-surface model and SECRETS a stand- to ecosystem-scale biogeochemical process model. Herein we used the EC technique as a standard for the evapotranspiration (ET) estimates. Using and evaluating process based models with data is extremely useful as models are the primary method for integration of small-scale, process level phenomena into comprehensive description of forest stand or ecosystem function. Results demonstrated that the two process models corresponded well to the seasonal patterns and yearly totals of ET from the EC approach. However, both WATBAL and CI approaches overestimated ET when compared to the EC estimates. We found significant relationships between several meteorological variables (i.e., vapour pressure deficit [VPD], mean air temperature [{\textlangle}i{\textrangle}T{\textlangle}/i{\textrangle}{\textlangle}sub{\textrangle}air{\textlangle}/sub{\textrangle}], and global radiation [{\textlangle}i{\textrangle}Rg{\textlangle}/i{\textrangle}]) and ET on monthly basis for all approaches. In contrast, few relationships were significant on annual basis. Independent of the method examined, ET exhibited low inter-annual variability. Consequently, drainage fluxes were highly correlated with annual precipitation for all approaches examined, except CI.},
  author       = {Gielen, Bert and Verbeeck, Hans and Neirynck, Johan and Vermeiren, F and Janssens, Ivan A},
  issn         = {1726-4170},
  journal      = {BIOGEOSCIENCES},
  keyword      = {EDDY-COVARIANCE,NET ECOSYSTEM EXCHANGE,ENERGY-BALANCE,CARBON-DIOXIDE,SAP-FLOW,FLUX MEASUREMENTS,CO2 EXCHANGE,LARCH FOREST,SCALING-UP,SOIL},
  language     = {eng},
  number       = {4},
  pages        = {1247--1261},
  title        = {Decadal water balance of a temperate Scots pine forest (Pinus sylvestris L.) based on measurements and modelling},
  url          = {http://www.biogeosciences.net/7/1247/2010/bg-7-1247-2010.html},
  volume       = {7},
  year         = {2010},
}

Chicago
Gielen, Bert, Hans Verbeeck, Johan Neirynck, F Vermeiren, and Ivan A Janssens. 2010. “Decadal Water Balance of a Temperate Scots Pine Forest (Pinus Sylvestris L.) Based on Measurements and Modelling.” Biogeosciences 7 (4): 1247–1261.
APA
Gielen, B., Verbeeck, H., Neirynck, J., Vermeiren, F., & Janssens, I. A. (2010). Decadal water balance of a temperate Scots pine forest (Pinus sylvestris L.) based on measurements and modelling. BIOGEOSCIENCES, 7(4), 1247–1261.
Vancouver
1.
Gielen B, Verbeeck H, Neirynck J, Vermeiren F, Janssens IA. Decadal water balance of a temperate Scots pine forest (Pinus sylvestris L.) based on measurements and modelling. BIOGEOSCIENCES. 2010;7(4):1247–61.
MLA
Gielen, Bert, Hans Verbeeck, Johan Neirynck, et al. “Decadal Water Balance of a Temperate Scots Pine Forest (Pinus Sylvestris L.) Based on Measurements and Modelling.” BIOGEOSCIENCES 7.4 (2010): 1247–1261. Print.