Multidimensional analysis of particle size fractal characteristics in a farmland soil profile

International Conference on Energy Engineering and Environmental Protection 2016

能源学;生态环境科学

Du, Y.C.^1,2 ; Han, J.C.^2 ; Zhang, S.W.^3 ; Huang, Y.F.^4 ; Wang, H.Y.^2 ; Luo, L.T.^2 ; Zhang, W.H.^2

Department of Resources and Environment, Northwest AandF University, Yangling

712100, China^1

Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources, Shaanxi Provincial Land Engineering Construction Group Co. Ltd., Xi'an

710075, China^2

College of Earth and Environmental Sciences, Anhui University of Science and Technology, Huainan

232001, China^3

College of Resources and Environment, China Agricultural University, Beijing

100193, China^4

关键词: Degree of dispersion;    Fractal characteristics;    Fractal parameters;    Multi-dimensional analysis;    Multi-dimensional fractals;    Multi-fractal spectrum;    Soil forming process;    Soil particle size;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/52/1/012053/pdf
DOI  :  10.1088/1742-6596/52/1/012053

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Soil particle size distribution (PSD) is a basic soil property, closely related to soil erosion, soil moisture, and so on. The multidimensional fractal method has been proved to be a better description of soil PSD. By choosing the four fractal parameters of Δa, ΔaR/ΔaL, D1/D0and, Δf(a)R/Δf(a)L, and using the multifractal spectrum, this paper analyzed one- and two-dimensional fractal characteristics of the soil profile (A, B, and C layers from top to bottom) PSD and their relationship on a field scale. The results showed that the PSD characteristics of different soil profiles were more heterogeneous in the east and west (WE) than the north and south (NS) in the study area, and the A layer soil PSD was the most uneven, with a larger degree of dispersion. With the soil layer depth, the soil PSD tended to be uniform. Regardless of one-dimensional or two-dimensional characteristics, the proportion of the low value of soil particle mass percent was relatively larger. The results of this study will not only provide a reference method for analyses of the fractal characteristics of soil PSD on a field scale, but also provide guidance in further understanding the soil structure and soil forming process.