title: [Application of fractal theory in studying soil aggregates under different skidding modes].
abstract: In this paper, the characters of soil aggregates under different skidding modes were investigated by fractal theory. The results showed that the particle fraction of soil aggregates was smaller under tractor- than under animal traction skidding. As for different parts of skidding road, the particle fraction of air-dried soil aggregates was in the order of bottom (2.309) > middle (2.291) > upper (2.014), while that of water-stable aggregates followed the sequence of bottom (2.04) < middle (2.143) < upper (2.262). The particle fraction of aggregates was 2.215 in forest soil and 2.175 in skidding roads. Skidding movement could improve soil aggregates when the cutting intensity was 15%. Tractor skidding was more favorable for soil aggregates formation.
authors.affiliation: Key Laboratory for Silviculture and Conservation of Education Ministry, Beijing Forestry University, Beijing 100083, China. cnlijunfeng@soho.com
authors.forename: Junfeng
authors.initials: J
authors.lastname: Li
authors.forename: Xuihai
authors.initials: X
authors.lastname: Zhao
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D017709:Fractals; D017711:Nonlinear Dynamics; D010316:Particle Size; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000254:growth & development
chemical_list: D012987:Soil