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@ARTICLE{Herbst:62049,
author = {Herbst, M. and Hellebrand, H. J. and Bauer, J. and Huisman,
J. A. and Simunek, J. and Weihermüller, L. and Graf, A. and
Vanderborght, J. and Vereecken, H.},
title = {{M}ultiyear heterotrophic soil respiration: {E}valuation of
a coupled {CO}2 transport and carbon turnover model},
journal = {Ecological modelling},
volume = {214},
issn = {0304-3800},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-62049},
pages = {271 - 283},
year = {2008},
note = {Record converted from VDB: 12.11.2012},
abstract = {Modelling of soil respiration plays an important role in
the prediction of climate change. Soil respiration is
usually divided in a fraction originating from root
respiration and a heterotrophic fraction originating from
microbial decomposition of soil organic carbon. This paper
reports on the coupling of an one-dimensional water, heat
and CO2 flux model (SOILCO2) with a pool concept of carbon
turnover (RothC) for the prediction of soil heterotrophic
respiration. In order to test this coupled model, it was
applied to a bare soil experimental plot located in Bornim,
Germany. Soil temperature and soil water content
measurements were used for comparison with the respective
model predictions. An 8 years data set Of CO2 efflux
measurements, covering a broad range of atmospheric
conditions, was used to evaluate the model. In a first step
we quantified the improvement of the CO2 efflux prediction
due to the coupling of the flux model with a pool concept of
carbon turnover. The humus pool decomposition rate constant
and its soil water content dependent reduction were derived
from the first 5 years Of CO2 efflux measurements using
inverse modelling. The following 3 years of measurements
were used to validate the model. The overall model
performance Of CO2 efflux predictions was acceptable with
the measured and simulated mean daily respiration being
0.861 and 0.868 g C m(-2) d(-1), respectively, and a mean
absolute difference between modelled and measured rates of
0.21 g C m(-2) d(-1). The inverse estimation of the humus
decomposition rate constant resulted in a value of 0.04
year(-1), which is higher than the default value in RothC.
This is attributed to the agricultural practice during the
experiment. (c) 2008 Elsevier B.V. All rights reserved.},
keywords = {J (WoSType)},
cin = {ICG-4 / JARA-SIM},
ddc = {570},
cid = {I:(DE-Juel1)VDB793 / I:(DE-Juel1)VDB1045},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Ecology},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000256608000015},
doi = {10.1016/j.ecolmodel.2008.02.007},
url = {https://juser.fz-juelich.de/record/62049},
}