Advances in spatial scaling effects of soil hydraulic properties
土壤水力特性的空间尺度效应研究进展

It is very important to study the spatial scaling effects of soil hydraulic properties in eco-hydrological simulation and agricultural water-fertilizer precision management. Some methods, including statistics, stochastic modeling, pedotransfer function (PTF) and fractal theory, can process the spatial variability research for hydraulic properties. Spatial variability modes may vary with the scale because the scales of physical, chemical and biological processes are different. Geostatistical, spectral, multifractal and wavelet analyses are proper ways to study the scaling effects of hydraulic properties, but some problems still exist, of which the scaling transformation is very important all the along. Moreover, some new techniques such as Geographical Information System (GIS) should be integrated into the research.