摘要
综述了利用分形几何理论 ,可在土壤水力性质 ,包括土壤水分特征曲线及水力传导系数与土壤结构分维之间建立起一定的函数关系式。这些函数关系式大多与 Campbell定律具有相同或相似的幂定律形式 ,一方面揭示了 Campbell定律的物理实质 。
The soil structures, including soil particle mass(size) distribution, pore volume distribution and solid-pore interface roughness, are fractals in limited length-scales and may be represented by mass fractal dimension, pore volume fractal dimension and surface fractal dimension. The functional equations consistent with the Campbell Law have been established between fractal dimensions and the hydraulic properties of soils in literatures reviewed. The equations disclose the physical mechanism of the Campbell Law and may be used to predict soil water retention and hydraulic conductivity of unsaturated soil.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2001年第1期99-106,共8页
Advances in Water Science
关键词
非饱和土壤
分形
持水量
水力传导系数
Function evaluation
Hydraulic conductivity
Mathematical techniques
Parameter estimation
Particle size analysis
Soil structure interactions
Surface roughness
