Abstract
Purpose
Soil saturated hydraulic conductivity (K S) is a key variable in hydrologic processes, the parameters of which have strong scale-dependency. Knowing the scaling dependency of K S is important when designing an appropriate sampling strategy.
Materials and methods
Determinations of K S were made for 4,865 undisturbed soil samples, collected from a grid with cells of 10 × 10 m in the Daye watershed (50 ha) on the Loess Plateau, China. The dataset was “re-sampled” to investigate the effect on K S of scales that differed by two orders of magnitude in terms of spacing and support, and eight scales of extent. The variance, correlation length, and nugget–sill ratio derived by analysis of the full dataset were taken to be the true values. Apparent values of variance, correlation length, and nugget–sill ratio were those calculated for each re-sampled data sub-set.
Results and discussion
Comparing the parameter values at different scales showed that apparent variance increased with increasing extent (p < 0.01), decreased with increasing support (p < 0.01), but was not significantly affected by spacing (p = 0.137). Apparent correlation length increased with increasing extent and support (p < 0.01). As spacing increased below 1.1 times the true correlation length (i.e., below 80 m), the apparent correlation length decreased slightly but, as spacing increased above 80 m, it notably increased. Apparent nugget–sill ratio decreased with increasing spacing and support (p < 0.01), and increased with increasing extent (p < 0.01). The scaling dependency for K S was in the order of extent > support > spacing for all three parameters, with mean coefficient of determination values of 0.96, 0.88, and 0.53, respectively.
Conclusions
The statistical properties investigated for K S were found to be scaling-dependent, which would benefit sampling strategy design.
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References
Armstrong A, Quinton JN, Francis B, Heng BCP, Sander GC (2011) Controls over nutrient dynamics in overland flows on slopes representative of agricultural land in North West Europe. Geoderma 164:2–10
Biswas A, Si BC (2011) Identifying scale specific controls of soil water storage in a hummocky landscape using wavelet coherency. Geoderma 165:50–59
Blöschl G (1998) Scale and scaling in hydrology—a framework for thinking and analysis. Wiley, Chichester
Blöschl G, Sivapalan M (1995) Scale issues in hydrological modelling—a review. Hydrol Process 9:251–290
Buttle JM, House DA (1997) Spatial variability of saturated hydraulic conductivity in shallow macroporous soils in a forested basin. J Hydrol 203:127–142
Chien YJ, Lee DY, Guo HY, Houng KH (1997) Geostatistical analysis of soil properties of mid-west Taiwan soils. Soil Sci 162:291–297
Dörner J, Dec D, Peng X, Horn R (2010) Effect of land use change on the dynamic behaviour of structural properties of an Andisol in southern Chile under saturated and unsaturated hydraulic conditions. Geoderma 159:189–197
Ehigiator OA, Anyata BU (2011) Effects of land clearing techniques and tillage systems on runoff and soil erosion in a tropical rain forest in Nigeria. J Environ Manage 92:2875–2880
Franklin RB, Mills AL (2003) Multi-scale variation in spatial heterogeneity for microbial community structure in an eastern Virginia agricultural field. FEMS Microbiol Ecol 44:335–346
Fu XL, Shao MA, Wei XR, Horton R (2010) Soil organic carbon and total nitrogen as affected by vegetation types in Northern Loess Plateau of China. Geoderma 155:31–35
Gamma Design Software (2004) GS+ Version 7. GeoStatistics for the Environmental Sciences. User’s guide. Gamma Design Software, LLC pp 160
Gao L, Shao MA (2012) The interpolation accuracy for seven soil properties at various sampling scales on the Loess Plateau, China. J Soils Sediments 12:128–142
Garten CT Jr, Kang S, Brice DJ, Schadt CW, Zhou J (2007) Variability in soil properties at different spatial scales (1 m–1 km) in a deciduous forest ecosystem. Soil Biol Biochem 39:2621–2627
Gelhar LW (1993) Stochastic subsurface hydrology. Prentice Hall, Englewood Cliffs, p 390
Gupta RK, Rudra RP, Dickinson WT, Patni NK, Wall GJ (1993) Comparison of saturated hydraulic conductivity measured by various field methods. Trans ASAE 36:51–55
Hirzel A, Guisan A (2002) Which is the optimal sampling strategy for habitat suitability modeling. Ecol Model 157:331–341
Hu W, Shao MA, Wang QJ, Fan J, Reichardt K (2008) Spatial variability of soil hydraulic properties on a steep slope in a Loess Plateau of China. Sci Agric 65:268–276
Hu W, Shao MA, Wang QJ, Fan J, Horton R (2009) Temporal changes of soil hydraulic properties under different land uses. Geoderma 149:355–366
Jenkins GM, Watts DG (1968) Spectral analysis and its applications. Holden–Day, San Francisco, p 525
Journel AG (1980) The lognormal approach to predicting local distributions of selective mining unit grades. Math Geol 12:285–303
Kerry R, Oliver MA (2007) Comparing sampling needs for variograms of soil properties computed by the method of moments and residual maximum likelihood. Geoderma 140:383–396
Klute A, Dirksen C (1986) Hydraulic conductivity and diffusivity. In: Klute A (ed) Methods of soil analysis, Part 1. Am Soc Agron Monograph 9:687–734
Krige DG (1994) A statistical approach to some basic mine valuation problems on the Witwatersrand. J S Afr Inst Min Metall 94:95–111
Lauren JG, Wagnet RJ, Bouma J, Wosten JHM (1988) Variability of saturated hydraulic conductivity in a glossaquic hapludalf with macropores. Soil Sci 145:20–28
Lima MPR, Soares AMVP, Loureiro S (2011) Combined effects of soil moisture and carbaryl to earthworms and plants: Simulation of flood and drought scenarios. Environ Pollut 159:1844–1851
Lin HS, Wheeler D, Bell J, Wilding L (2005) Assessment of soil spatial variability at multiple scales. Ecol Model 182:271–290
Liu XY (1982) The research method of soil physics and soil melioration. Shanghai Technology Press, Shanghai (in Chinese)
Logsdon SD (2002) Determination of preferential flow model parametres. Soil Sci Soc Am J 66:1095–1103
Matalas NC (1967) Mathematical assessment of synthetic hydrology. Water Resour Res 3:937–945
Mohanty BP, Kanwar RS, Everts CJ (1994) Comparison of saturated hydraulic conductivity measurement methods for a glacial-till soil. Soil Sci Soc Am J 58:72–677
Mohanty BP, Mousli Z (2000) Saturated hydraulic conductivity and soil water retention properties across a soil-slope transition. Water Resour Res 36:3311–3324
Moustafa MM (2000) A geostatistical approach to optimize the determination of saturated hydraulic conductivity for large-scale subsurface drainage design in Egypt. Agric Water Manag 42:291–312
Mualem Y (1992) Modeling the hydraulic conductivity of unsaturated porous media. In: van Genuchten MTH, Leij FJ, Lund FJ (eds) Indirect methods for estimating the hydraulic properties of unsaturated soils. University of California, Riverside, pp 15–36
Puckett WE, Dane JH, Hajek BF (1985) Physical and mineralogical data to determine soil hydraulic properties. Soil Sci Soc Am J 49:831–836
Rawls WJ, Gimenez D, Grossman R (1998) Use of soil texture, bulk density, and slope of the water retention curve to predict saturated hydraulic conductivity. Trans ASABE 41:983–988
Richards JH, Caldwell MM (1987) Hydraulic lift: substantial nocturnal water transport between soil layers by Artemisia tridentata roots. Oecologia 73:486–489
Rodríguez-Iturbe I, Vogel GK, Rigon R, Entekhabi D, Castelli F, Rinaldo A (1995) On the spatial organization of soil moisture fields. Geophys Res Lett 22:2757–2760
Romano N (1993) Use of an inverse method and geostatistics to estimate soil hydraulic conductivity for spatial variability analysis. Geoderma 60:169–186
Ruiz-Sinoga JD, Martínez-Murillo JF, Gabarrón-Galeote MA, García-Marín R (2010) The effects of soil moisture variability on the vegetation pattern in Mediterranean abandoned fields (Southern Spain). Catena 85:1–11
Russo D, Jury WA (1987) A theoretical study of the estimation of the correlation scale in spatially variable fields: 1. Stationary fields. Water Resour Res 23:1257–1268
Saito H, Goovaerts P (2000) Geostatistical interpolation of positively skewed and censored data in a dioxin-contaminated site. Environ Sci Technol 34:4228–4235
Sobieraj JA, Elsenbeer H, Coelho RM, Newton B (2002) Spatial variability of soil hydraulic conductivity along a tropical rainforest catena. Geoderma 108:79–90
Sobieraj JA, Elsenbeer H, Cameron G (2004) Scale dependency in spatial patterns of saturated hydraulic conductivity. Catena 55:49–77
Tang KL, Hou QC, Wang BK, Zhang PC (1993) The environment background and administration way of wind-water erosion crisscross region and Shenmu experimental area on the Loess Plateau. Mem NISWC Acad Sin Minist Water Conserv 18:2–15 (in Chinese)
Topp GC, Zebchuk WD, Dumanski J (1980) The variation of in situ measured soil water properties within soil map units. Can J Soil Sci 60:497–509
Van Groenigen JW, Siderius W, Stein A (1999) Constrained optimisation of soil sampling for minimisation of the kriging variance. Geoderma 87:239–259
Van Schilfgaarde J (1970) Theory of flow to drains. In: Chow VT (ed) Advances in hydroscience, vol 6. Academic, London, pp 43–106
Vanmarcke E (1983) Random fields: analysis and synthesis. The MIT Press, Cambridge, p 382
Wang YQ, Shao MA, Gao L (2010) Spatial variability of soil particle size distribution and fractal features in Water-Wind Erosion Crisscross Region on the Loess Plateau of China. Soil Sci 175:579–589
Wang YQ, Shao MA, Zhu YJ, Liu ZP (2011) Impacts of land use and plant characteristics on dried soil layers in different climatic regions on the Loess Plateau of China. Agr Forest Meteorol 151:437–448
Western AW, Blöschl G (1999) On the spatial scaling of soil moisture. J Hydrol 217:203–224
Yang JL, Zhang GL (2011) Water infiltration in urban soils and its effects on the quantity and quality of runoff. J Soils Sediments 11:751–761
Zimmermann B, Elsenbeer H (2008) Spatial and temporal variability of soil saturated hydraulic conductivity in gradients of disturbance. J Hydrol 361:78–95
Acknowledgments
This work was supported by the innovation team project of the Ministry of Education, China (No. IRT0749), and the National Natural Science Foundation of China (41071156). The authors are indebted to the editor and reviewers for their valuable comments and suggestions. We also thank Mr. David Warrington for his zealous help in improving the manuscript. Special thanks to the staff of Shenmu Erosion and Environment Station of the Institute of Soil and Water Conservation of CAS.
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Gao, L., Shao, M. & Wang, Y. Spatial scaling of saturated hydraulic conductivity of soils in a small watershed on the Loess Plateau, China. J Soils Sediments 12, 863–875 (2012). https://doi.org/10.1007/s11368-012-0511-3
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DOI: https://doi.org/10.1007/s11368-012-0511-3