Fractal features of soil microaggregate and particle-size distribution during natural succession on grassland on the Loess Plateau, China
Fractal method has been shown to be a useful tool to evaluate soil erosion, desertification and soil physical properties. In this study, fractal dimension was used to investigate the changes in soil microaggregate and particle-size distribution during natural succession on grassland on the Loess Plateau of China. The results showed that as the grassland succession proceeds, the microaggregate and particle fractal dimension increased in the early 13 years and thereafter decreased. The soil microaggregate and particle-size distribution are dominated by 0.01-0.25mm class size. Microaggregate fractal dimension are positively correlated with small-microaggregate (<O.O1mm) but negatively with bigger-microaggregate (>0.05mm). Particle fractal dimension are positively correlated with clay content (<0.002mm) but negatively with sand content (>0.05mm). It was suggested that fractal dimension of microaggregate and particle-size distribution has a significant implication for evaluating soil structure on the Loess Plateau.
microaggregate particle-size distribution fractal dimension succession
Chao Zhang Sha Xue Guobin Liu Liangxin Fan Zilin Song
Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource No Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource No
国际会议
西安
英文
361-366
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）