TY  - JOUR
AU  - Martínez García, Gonzalo
AU  - Pachepsky, Yakov A.
AU  - Vereecken, Harry
TI  - Effect of soil hydraulic properties on the relationship between the spatial mean and variability of soil moisture
JO  - Journal of hydrology
VL  - 516
SN  - 0022-1694
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2014-04530
SP  - 154 - 160
PY  - 2014
AB  - Knowledge of spatial mean soil moisture and its variability over time is needed in many environmental applications. We analyzed dependencies of soil moisture variability on average soil moisture contents in soils with and without root water uptake using ensembles of non-stationary water flow simulations by varying soil hydraulic properties under different climatic conditions. We focused on the dry end of the soil moisture range and found that the magnitude of soil moisture variability was controlled by the interplay of soil hydraulic properties and climate. The average moisture at which the maximum variability occurred depended on soil hydraulic properties and vegetation. A positive linear relationship was observed between mean soil moisture and its standard deviation and was controlled by the parameter defining the shape of soil water retention curves and the spatial variability of saturated hydraulic conductivity. The influence of other controls, such as variable weather patterns, topography or lateral flow processes needs to be studied further to see if such relationship persists and could be used for the inference of soil hydraulic properties from the spatiotemporal variation in soil moisture.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000339036100014
DO  - DOI:10.1016/j.jhydrol.2014.01.069
UR  - https://juser.fz-juelich.de/record/155361
ER  -