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[1]GE Dong-yuan,ZHANG Hong-jiang,ZHENG Guo-qiang,et al.Fractal Characteristics of Particle-size in Four Plantation in Simian Mountain of Chongqing[J].Research of Soil and Water Conservation,2011,18(02):148-151.

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Fractal Characteristics of Particle-size in Four Plantation in Simian Mountain of Chongqing

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 02 Page number: 148-151 Column: Public date: 2011-04-20

Title:: Fractal Characteristics of Particle-size in Four Plantation in Simian Mountain of Chongqing

Author(s):: GE Dong-yuan¹, ZHANG Hong-jiang¹, ZHENG Guo-qiang^1,2, LIU Tao^1,3, WANG Wei¹; 1. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;
2. Soil and Water Conservation Bureau of Qinghai Province, Xi’ning 810001, China;
3. Chinese Academy of Transportation Sciences, Beijing 100029, China

Keywords:: Simian Mountain; plantation; fractal characteristic of particle-size

CLC:: S714.2

DOI:: -

Abstract:: Fractal model has been applied to study soil structure by using mass-based soil particle-size distribution (PSD) data in four plantations in Simian Mountain of Chongqing. Results showed that the average range of fractal dimension of soil PSD is between 2.625~2.693 at the depth of 0-40 cm, which is not significantly different by the varition of soil depth, but significant varition in different plantations. Above all, the soil PSD from high to low in four plantations are as Lithocarpus glaber×Schima superba mixed forest (2.693)> Cunninghamia lanceolata×Pinus massoniana×Schima superba (2.688)> Cunninghamia lanceolata×Pinus massoniana (2.659)> Cunninghamia lanceolata (2.625).The soil structure of Schima superba×Lit hocarp usglabra mixed forest is the best, Cunninghamia lanceolata is the worst; the mixed broadleaf forest is better than mixed broadleaf-conifer forest or coniferous forest, which not only makes better soil structure but also has stronger anti-erodibility and permeability in Simian Mountain. There is a clear linear correlation between the fractal dimension and the clay contents, when the clay content is higher, the fractal dimension is higher too, when the content of clay less than 0.001 mm is 11.38%, the soil structure will be better.

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