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@ARTICLE{Rudolph:173378,
author = {Rudolph, S. and van der Kruk, J. and von Hebel, C. and Ali,
M. and Herbst, M. and Montzka, C. and Pätzold, S. and
Robinson, D. A. and Vereecken, H. and Weihermüller, L.},
title = {{L}inking satellite derived {LAI} patterns with subsoil
heterogeneity using large-scale ground-based electromagnetic
induction measurements},
journal = {Geoderma},
volume = {241-242},
issn = {0016-7061},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2014-06788},
pages = {262 - 271},
year = {2015},
abstract = {Patterns in crop development and yield are often directly
related to lateral and vertical changes in soil texture
causing changes in available water and resource supply for
plant growth, especially under dry conditions. Relict
geomorphologic features, such as old river channels covered
by shallow sediments can challenge assumptions of uniformity
in precision agriculture, subsurface hydrology, and crop
modeling. Hence a better detection of these subsurface
structures is of great interest. In this study, the origins
of narrow and undulating leaf area index (LAI) patterns
showing better crop performance in large scale
multi-temporal satellite imagery were for the first time
interpreted by proximal soil sensor data. A multi-receiver
electromagnetic induction (EMI) sensor measuring soil
apparent electrical conductivity (ECa) for six depths of
exploration (DOE) ranging from 0–0.25 to 0–1.9 m was
used as reconnaissance soil survey tool in combination with
selected electrical resistivity tomography (ERT) transects,
and ground truth texture data to investigate lateral and
vertical changes of soil properties at ten arable fields.
The moderate to excellent spatial consistency (R2
0.19–0.82) of ECa patterns and LAI crop marks that
indicate a higher water storage capacity as well as the
increased correlations between large-offset ECa data and the
subsoil clay content and soil profile depth, implies that
along this buried paleo-river structure the subsoil is
mainly responsible for better crop development in drought
periods. Furthermore, observed stagnant water in the subsoil
indicates that this paleo-river structure still plays an
important role in subsurface hydrology. These insights
should be considered and implemented in local hydrological
as well as crop models},
cin = {IBG-3},
ddc = {550},
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:000348083700025},
doi = {10.1016/j.geoderma.2014.11.015},
url = {https://juser.fz-juelich.de/record/173378},
}