Numerous studies have shown that soil particle size and weight distribution are fractals

which are generally described with fractal geometry in this paper

analysis of nine sampling soils from sandy soil blown by wind plots in Kurbantunggut desert. A fractal model for sandy soil water retention curve is derived with Van Genuchten model. The fractal dimensions of sandy soil water retention curve are calculated with experimental data for sandy soil water retention curve of nine different kinds of soils in Kurbantunggut desert. And the fractal dimensions of sandy soil water retention curve are compared to the fractal dimensions of particle size distribution which are calculated on the basis of accumulative mass distribution of soil particles. The results show that the fractal dimensions of sandy soil water retention curve and particle size distribution increase with soil texture that ranges from floating sandy soil to semi-immobile soil

and to immobile soil. The fractal dimensions of sandy soil water retention curve show slightly different form and are linear related to the fractal dimensions of particle size distribution respectively. The soil water retention curve has been predicted by fractal model

which showed that simulation values of soil water retention curve significantly close to observation values of that. This indicates that the sandy soil water retention curve can be predicted by the fractal model for sandy soil water retention curve.