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[1]LI Jian-qiang,ZHANG Hong-jiang,CHEN Qi-bo,et al.Soil Particle-Size Fractal Characteristics and the Relationship with Physicochemical Properties of Soil in Hedgerow Systems in the Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2014,21(06):129-133,139.

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Soil Particle-Size Fractal Characteristics and the Relationship with Physicochemical Properties of Soil in Hedgerow Systems in the Three Gorges Reservoir Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 06 Page number: 129-133,139 Column: Public date: 2014-12-28

Title:: Soil Particle-Size Fractal Characteristics and the Relationship with Physicochemical Properties of Soil in Hedgerow Systems in the Three Gorges Reservoir Area

Author(s):: LI Jian-qiang¹, ZHANG Hong-jiang², CHEN Qi-bo¹, ZHOU Hong-fen³; 1. School of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China;
2. School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;
3. Department of Soil and Water Conservation Technology, Kunming Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Kunming 650051, China

Keywords:: hedgerow system; soil particle-size fractal characteristics; soil physicochemical properties; correlation

CLC:: S152

DOI:: -

Abstract:: To achieve well understanding of soil particle-size fractal characteristics and the volume fractal dimension(D_v) variance among hedgerow agroforestry system, and also the correlations between D_v and soil physical properties and nutrients, soils sampled from inventory plots located in the Three Gorges Reservoir area of the Yangtze River were analyzed in this study. D_v was calculated and the relations between D_v and soil physicochemical properties were tested. The result indicated that: (1) sand concentrations of soil under hedgerows stripe were reduced by 14.3%，19.5% and 10.7% respectively compared with those of soils taken from between hedgerows, the clay concentrations of soils under hedgerows stripe increased under hedgerow with the increment of 14.3%, 19.5% and 10.7%; (2) D_v was correlated positively and highly significantly (P < 0.01) with the soil clay concentration and less significantly (P < 0.05) with soil silt content, however, D_v was negatively correlated with soil sand concentration; (3) D_v of soil in hedgerow systems was correlated positively and highly significantly (P < 0. 01) with the soil porosity, water content, soil saturated water conductivity, and correlated negatively with soil bulk density. In addition, the D_v of soils in hedgerow systems were highly positively correlated with total and available nitrogen, total and exchangeable potassium, total phosphorus and cation exchangeable capacity.

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