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@ARTICLE{Korres:173377,
author = {Korres, W. and Reichenau, T. G. and Fiener, P. and Koyama,
C. N. and Bogena, Heye and Cornelissen, T. and Baatz, R. and
Herbst, M. and Diekkrüger, B. and Vereecken, H. and
Schneider, K.},
title = {{S}patio-temporal soil moisture patterns - {A}
meta-analysis using plot to catchment scale data},
journal = {Journal of hydrology},
volume = {520},
issn = {0022-1694},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2014-06787},
pages = {326 - 341},
year = {2015},
abstract = {Soil moisture is a key variable in hydrology, meteorology
and agriculture. It is influenced by many factors, such as
topography, soil properties, vegetation type, management,
and meteorological conditions. The role of these factors in
controlling the spatial patterns and temporal dynamics is
often not well known. The aim of the current study is to
analyze spatio-temporal soil moisture patterns acquired
across a variety of land use types, on different spatial
scales (plot to meso-scale catchment) and with different
methods (point measurements, remote sensing, and modeling).
We apply a uniform set of tools to determine method specific
effects, as well as site and scale specific controlling
factors. Spatial patterns of soil moisture and their
temporal development were analyzed using nine different
datasets from the Rur catchment in Western Germany. For all
datasets we found negative linear relationships between the
coefficient of variation and the mean soil moisture,
indicating lower spatial variability at higher mean soil
moisture. For a forest sub-catchment compared to cropped
areas, the offset of this relationship was larger, with
generally larger variability at similar mean soil moisture
values. Using a geostatistical analysis of the soil moisture
patterns we identified three groups of datasets with similar
values for sill and range of the theoretical variogram: (i)
modeled and measured datasets from the forest sub-catchment
(patterns mainly influenced by soil properties and
topography), (ii) remotely sensed datasets from the cropped
part of the Rur catchment (patterns mainly influenced by the
land-use structure of the cropped area), and (iii) modeled
datasets from the cropped part of the Rur catchment
(patterns mainly influenced by large scale variability of
soil properties). A fractal analysis revealed that all
analyzed soil moisture patterns showed a multifractal
behavior, with at least one scale break and generally high
fractal dimensions. Corresponding scale breaks were found
between different datasets. The factors causing these scale
breaks are consistent with the findings of the
geostatistical analysis. Furthermore, the joined analysis of
the different datasets showed that small differences in soil
moisture dynamics, especially at the upper and lower bounds
of soil moisture (at maximum porosity and wilting point of
the soils) can have a large influence on the soil moisture
patterns and their autocorrelation structure. Depending on
the prevalent type of land use and the time of year,
vegetation causes a decrease or an increase of spatial
variability in the soil moisture pattern.},
cin = {IBG-3},
ddc = {690},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255) / 255 - Terrestrial Systems: From Observation to
Prediction (POF3-255)},
pid = {G:(DE-HGF)POF3-255 / G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000348255900027},
doi = {10.1016/j.jhydrol.2014.11.042},
url = {https://juser.fz-juelich.de/record/173377},
}