Temporal Stability of Soil Water Contents: A Review of Data and Analyses

Temporal stability (TS) of soil water content (SWC) has been observed throughout a wide range of spatial and temporal scales. Yet, the evidence with respect to the controlling factors on TS SWC remains contradictory or nonexistent. The objective of this work was to develop the first comprehensive review of methodologies to evaluate TS SWC and to present and analyze an inventory of published data. Statistical analysis of mean relative difference (MRD) data and associated standard deviations (SDRD) from 157 graphs in 37 publications showed a trend for the standard deviation of MRD (SDMRD) to increase with scale, as expected. The MRD followed generally the Gaussian distribution with R 2 ranging from 0.841 to 0.998. No relationship between SDMRD and R 2 was observed. The smallest R 2 values were mostly found for negatively skewed and platykurtic MRD distributions. A new statistical model for temporally stable SWC fields was proposed. The analysis of the published data on seven measurement-, terrain-, and climate-related potentially controlling factors of TS SWC suggested intertwined effects of controlling factors rather than single dominant factors. This calls for a focused research effort on the interactions and effects of measurement design, topography, soil, vegetation and climate on TS SWC. Research avenues are proposed which will lead to a better understanding of the TS phenomenon and ultimately to the identification of the underlying mechanisms.

[1]  Hydraulic variability in space and time in a dark red latosol of the tropics , 1993 .

[2]  Douglas A. Miller,et al.  SMEX02: Field scale variability, time stability and similarity of soil moisture , 2004 .

[3]  J. Huisman,et al.  Temporal stability of soil moisture in various semi-arid steppe ecosystems and its application in remote sensing , 2008 .

[4]  Todd H. Skaggs,et al.  Spatio-temporal evolution and time-stable characteristics of soil moisture within remote sensing footprints with varying soil, slope, and vegetation , 2001 .

[5]  W. Wallender,et al.  PLOTSIZE AND SAMPLE NUMBER FOR NEUTRON PROBE MEASUREMENTS IN SMALL FIELD TRIALS , 1993 .

[6]  K. Reichardt,et al.  Comparison of neutron moisture gauges with nonnuclear methods to measure field soil water status , 1992 .

[7]  Luca Brocca,et al.  Spatial‐temporal variability of soil moisture and its estimation across scales , 2010 .

[8]  C. Daughtry,et al.  Temporal stability in soil water content patterns across agricultural fields , 2008 .

[9]  D. K. Cassel,et al.  Assessing Spatial Variability in an Agricultural Experiment Station Field: Opportunities Arising from Spatial Dependence , 2000 .

[10]  M. Shao,et al.  Time stability of soil water storage measured by neutron probe and the effects of calibration procedures in a small watershed , 2009 .

[11]  Asim Biswas,et al.  Scales and locations of time stability of soil water storage in a hummocky landscape , 2011 .

[12]  Identification of Optimal Sampling Locations and Grid Size for Soil Moisture Mapping , 2004 .

[13]  J. F. Martínez-Murillo,et al.  The effects of soil moisture variability on the vegetation pattern in Mediterranean abandoned fields (Southern Spain) , 2011 .

[14]  E. Jong,et al.  Scale dependence and the temporal persistence of spatial patterns of soil water storage , 1988 .

[15]  Field-Scale Soil Moisture PaƩ ern Mapping using ElectromagneƟ c InducƟ on , 2010 .

[16]  Y. Pachepsky,et al.  Temporal persistence in vertical distributions of soil moisture contents , 2005 .

[17]  Jeffrey D. Niemann,et al.  Spatial patterns from EOF analysis of soil moisture at a large scale and their dependence on soil, land-use, and topographic properties , 2007 .

[18]  Gift Dumedah,et al.  Evaluation of statistical methods for infilling missing values in high-resolution soil moisture data , 2011 .

[19]  Yolanda Cantón,et al.  Temporal and spatial patterns of soil moisture in semiarid badlands of SE Spain , 2004 .

[20]  Neutron probe calibration correction by temporal stability parameters of soil water content probability distribution , 1997 .

[21]  Y. Pachepsky,et al.  Stochastic imaging of soil parameters to assess variability and uncertainty of crop yield estimates , 1998 .

[22]  D. Pollard.  A User's Guide to Measure Theoretic Probability by David Pollard , 2001 .

[23]  Luca Brocca,et al.  Soil moisture temporal stability over experimental areas in Central Italy. , 2009 .

[24]  Jennifer M. Jacobs,et al.  Spatial soil moisture scaling structure during Soil Moisture Experiment 2005 , 2011 .

[25]  B. Si,et al.  Depth Persistence of the Spatial Pattern of Soil Water Storage in a Hummocky Landscape , 2011 .

[26]  J. Martínez-Fernández,et al.  Mean soil moisture estimation using temporal stability analysis , 2005 .

[27]  R. Allen,et al.  Technical concepts related to conservation of irrigation and rainwater in agricultural systems , 2008 .

[28]  Jennifer M. Jacobs,et al.  Spatiotemporal analyses of soil moisture from point to footprint scale in two different hydroclimatic regions , 2011 .

[29]  David R. Huggins,et al.  Spatio-temporal patterns of soil water storage under dryland agriculture at the watershed scale , 2011 .

[30]  Henry Lin.  Temporal Stability of Soil Moisture Spatial Pattern and Subsurface Preferential Flow Pathways in the Shale Hills Catchment , 2006 .

[31]  J. L. Muriel,et al.  Field‐Scale Soil Moisture Pattern Mapping using Electromagnetic Induction , 2010 .

[32]  Variation of Soil Water Storage across a Sand Plain Hillslope , 1995 .

[33]  Phaedon C. Kyriakidis,et al.  Geostatistical Space–Time Models: A Review , 1999 .

[34]  P. L. Libardi,et al.  Estabilidade temporal da distribuição espacial da armazenagem de água em um solo cultivado com citros , 2005 .

[35]  M. Vanclooster,et al.  Effect of high-resolution spatial soil moisture variability on simulated runoff response using a distributed hydrologic model , 2011 .

[36]  Angelo Basile,et al.  Temporal stability of spatial patterns of soil water storage in a cultivated Vesuvian soil , 1994 .

[37]  Thomas J. Jackson,et al.  Large scale measurements of soil moisture for validation of remotely sensed data: Georgia soil moisture experiment of 2003☆ , 2006 .

[38]  N. Lamaddalena,et al.  Average moisture saturation effects on temporal stability of soil water spatial distribution at field scale , 2011 .

[39]  V. Castillo,et al.  Spatial patterns and temporal stability of soil moisture across a range of scales in a semi‐arid environment , 2000 .

[40]  G. Heathman,et al.  Temporal stability of surface soil moisture in the Little Washita River watershed and its applications in satellite soil moisture product validation , 2006 .

[41]  T. Jackson,et al.  Watershed scale temporal and spatial stability of soil moisture and its role in validating satellite estimates , 2004 .

[42]  Henry Lin,et al.  Influences of soil, terrain, and crop growth on soil moisture variation from transect to farm scales , 2011 .

[43]  Jennifer M. Jacobs,et al.  Soil moisture variability of root zone profiles within SMEX02 remote sensing footprints , 2007 .

[44]  James P. McNamara,et al.  Spatial variation and temporal stability of soil water in a snow‐dominated, mountain catchment , 2004 .

[45]  Marco Borga,et al.  Hillslope scale soil moisture variability in a steep alpine terrain , 2009 .

[46]  T. Jackson,et al.  Temporal persistence and stability of surface soil moisture in a semi-arid watershed , 2008 .

[47]  Erwin Zehe,et al.  Plot and field scale soil moisture dynamics and subsurface wetness control on runoff generation in a headwater in the Ore Mountains , 2009 .

[48]  José Martínez-Fernández,et al.  Temporal Stability of Soil Moisture in a Large‐Field Experiment in Spain , 2003 .

[49]  R. Petrone,et al.  Statistical characterization of the spatial variability of soil moisture in a cutover peatland , 2004 .

[50]  Front dynamics of supercritical non‐Boussinesq gravity currents , 2006 .

[51]  T. Jackson,et al.  Field observations of soil moisture variability across scales , 2008 .

[52]  Jan Vanderborght,et al.  Characterization and Understanding of Bare Soil Respiration Spatial Variability at Plot Scale , 2009 .

[53]  Andrew W. Western,et al.  Towards areal estimation of soil water content from point measurements: time and space stability of mean response , 1998 .

[54]  M. Shao,et al.  Using a New Criterion to Identify Sites for Mean Soil Water Storage Evaluation , 2010 .

[55]  Salvatore Manfreda,et al.  On the spatial and temporal sampling of soil moisture fields , 2005 .

[56]  Thomas J. Jackson,et al.  Temporal stability of soil moisture profile , 2006 .

[57]  Asim Biswas,et al.  Identifying scale specific controls of soil water storage in a hummocky landscape using wavelet coherency , 2011 .

[58]  François Hupet,et al.  Estimating spatial mean root-zone soil moisture from point-scale observations , 2006 .

[59]  P. Rosnay,et al.  Multi-scale soil moisture measurements at the Gourma meso-scale site in Mali , 2009 .

[60]  B. Venkatesh,et al.  Analysis of observed soil moisture patterns under different land covers in Western Ghats, India , 2011 .

[61]  Chulsang Yoo,et al.  EOF analysis of surface soil moisture field variability , 2004 .

[62]  Stefano Vignudelli,et al.  Improved satellite altimetry in coastal systems: Case study of the Corsica Channel (Mediterranean Sea) , 2005 .

[63]  B. Kay,et al.  Factors contributing to temporal stability in spatial patterns of water content in the tillage zone , 2001 .

[64]  Günter Blöschl,et al.  Preferred states in spatial soil moisture patterns: Local and nonlocal controls , 1997 .

[65]  Michael H. Cosh,et al.  Surface and profile soil moisture spatio-temporal analysis during an excessive rainfall period in the Southern Great Plains, USA , 2009 .

[66]  D. Rosen,et al.  Inferring the location of catchment characteristic soil moisture monitoring sites. Covariance structures in the temporal domain , 2003 .

[67]  N. Verhoest,et al.  Upscaling of point soil moisture measurements to field averages at the OPE3 test site , 2007 .

[68]  J. W. Biggar,et al.  Temporal persistence of spatial soil-water patterns under trickle irrigation , 1991, Irrigation Science.

[69]  Jeffrey D. Niemann,et al.  Analysis and estimation of soil moisture at the catchment scale using EOFs , 2007 .

[70]  Peter A. Troch,et al.  Improved understanding of soil moisture variability dynamics , 2005 .

[71]  M. Shao,et al.  Watershed scale temporal stability of soil water content , 2010 .

[72]  Youming Chen.  Letter to the Editor on “Rank Stability or Temporal Stability” , 2006 .

[73]  Y. Pachepsky,et al.  Data Assimilation with Soil Water Content Sensors and Pedotransfer Functions in Soil Water Flow Modeling , 2012 .

[74]  M. Martínez-Mena,et al.  Factors regulating spatial distribution of soil water content in small semiarid catchments , 2001 .

[75]  G. Vachaud,et al.  Temporal Stability of Spatially Measured Soil Water Probability Density Function , 1985 .

[76]  B. Si,et al.  Representative Soil Water Benchmarking for Environmental Monitoring , 2004 .

[77]  Karl Schneider,et al.  Analysis of surface soil moisture patterns in agricultural landscapes using Empirical Orthogonal Functions , 2009 .

[78]  G. Starr,et al.  Assessing temporal stability and spatial variability of soil water patterns with implications for precision water management , 2005 .