International Journal of Soil Science1816-4978xxxx-xxxxAcademic Journals Inc.10.3923/ijss.2008.101.108ZolfaghariA.A.HajabbasiM.A.2200832In this study, the feasibility of making the use of
fractal dimension to quantify soil aggregate stability in different land
use systems was investigated. For this purpose the non-linear fractal
dimension (D_{nl}) and the Mean Weight Diameter (MWD) of aggregates
were compared. In October 2005, soil samples from three sites with four
adjacent land-use types namely: forest area (F), cultivated lands adjacent
to forest (CAF), pasture (P) and cultivated lands adjacent to pasture
(CAP) were collected. Cultivated pasture (CAP) had the largest value of
D_{nl}, while pasture (P) had the smallest value of D_{nl}.
Difference of D_{nl} between forest and pasture was not significant,
while both of them significantly differed from that of cultivated forest
(CAF) and cultivated pasture (CAP) in this parameter. There were significant
differences between forest and pasture for the measured MWD. Coefficient
of variations (CVs) between MWD_{ }and D_{nl} were also
contrasted and the low value of CV indicated the higher precision of the
method used. The lowest CVs belonged to D_{nl}, demonstrating
that D_{nl} was more accurate than MWD methods. Fractal dimension
had negative correlation with MWD, SOM, Hydraulic Conductivity (HC) and
macroaggregates (>0.25 mm) and positive correlation with Bulk Density
(BD) and Total Porosity (TP).]]>Celik, I., 2005Danielson, R.E. and P.L. Sutherland, 1986Duiker, S.W., F.E. Rhoton, J. Torrent, N.E. Smeck and R. Lal, 2003Gee, G.W. and J.W. Bauder,1996Gulser, C.,2005Hajabbasi, M.A., A. Jalalian and H.R. Karimzadeh,1997Kemper, W.D. and R.C. Rosenau,1986Klute, A. and C. Dirksen, 1986Mandelbrot, B.B., 1982Mazurak, A.P.,1950Millan, H., M. Gonzalez-Posada and R.M. Benito,2002Nelson, D.W. and L.E. Sommers,1983Perfect, E. and B.D. Kay, 1991Pirmoradian, N., A.R. Sepaskhah and M.A. Hajabbasi,2005Rasiah, V., B.D. Kay and E. Perfect,1992Rasiah, V., B.D. Kay and E. Perfect,1993Rasiah, V. and V.O. Biederbeck,1995Shepherd, T., G. Saggar, R.H. Newman, C.W. Ross and J.L. Dando, 2001Tyler, S.W. and S.W. Wheatcraft,1992Van Bavel, C.H.M.,1950Zhao, S.W., S.U. Jing, Y.H. Yang, N.N. Liu, W.U. Jin-Shui and Z.P. Shangguan, 2006Marquardt, W.D.,1963